HomeMy WebLinkAboutA016 - Excerpts from National Plumbing Code Administration
• 101.4.1.3 Existing Construction. No provision of this code shall
be deemed to require a change in any portion of a plumbing or
• drainage system or any other work regulated by this code in or on
an existing building or lot when such work was installed and is
• maintained in accordance with law in effect prior to the effective
date of this code, except when any such plumbing or drainage
• system or other work regulated by this code is determined by the
Authority Having Jurisdiction to be in fact dangerous, unsafe,
insanitary, or a nuisance and a menace to life, health, or property.
This code is published and oftentimes adopted in three year cycles.
• There may be many changes in the code from code cycle to code cycle
and it is not the intent of any jurisdiction to require existing buildings
• to continualiv meet the requirements of the newly adopted edition
of the code. There are three conditions that will allow an existing
plumbing system to survive changes in the code without being
brought up to the requirements of the new code. These conditions
are:
• 1.The existing system must have been properly installed according
to the code in effect at the time of the installation;
• 2. The system must have been properly maintained according to
the code in effect when periodic maintenance was performed;
• and
3. The system must not be "dangerous, unsafe, insanitary, or a
• nuisance and menace to life,health,or property."An example of
this would be a broken and leaking sewer pipe.
If it can be proved that any or all of the above provisions were
• not met,the AHJ is justified in requiring that system to be brought up
to the requirements of the new edition of the code.
101.4.1.4 Conflicts Between Codes. When the requirements
• within the jurisdiction of this plumbing code conflict with the
requirements of the mechanical code, this code shall prevail.
• Should the user of this code and the Uniform Mechanical Code
(UMC)used in that jurisdiction feel there is a conflict between the
• two codes,it is recommended that the user contact the AHJ.The AHJ
will then determine if there is a conflict and how best to resolve it.
• However, if there is a conflict between the UPC and the UMC as
published by IAPMO, then the UPC should be followed. It is still
. advisable, however, to contact the AHJ for guidance or contact
IAPMO for an interpretation of the sections in conflict.
• 101.4.2 Additions, alterations, repairs, and replacement of plumbing
systems shall comply with the provisions for new systems except as
otherwise provided in Section 101.5.
• When plumbing system additions, alterations, repairs or
replacements are made, they shall be performed according to the
• requirements of this code as if they were new installations. Section
1013 details further requirements and exceptions to this regulation.
• 101.4.3 The provisions in the appendices are intended to supplement
. the requirements of this code and shall not be considered part of this
• code unless formally adopted as such.
• About one-half of the UPC consists of appendices. Valuable
information is contained in these appendices regarding the sizing of
• water piping and storm water drains;the installation of combination
x?aste and vent systems, graywater drains, and private sewage
disposal systems and much more. This reference material, though
highly valuable,is not legally a part of the code as it stands.If a local
jurisdiction chooses to make all or part of these appendices code
• material,it may do so through its adoption process.It should also be
2009 UPC ITM 1-5
Inlet or _
• ��fixture side
• = Trap seat —
t,.
i
• Outlet (discharge)
i
• � side -
Seal Intact Fixture Discharging Seai Lost
• Figure 9-3. Direct Siphonage
•
•
2009 UPC Illustrated Training Manual
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•
•
•
•
•
•
• Figure 9-16
• Figure 9-15 Prohibited S Trap
Vent Installed in Horizontal
• Position
•
•
VENT PIPE VENT PIPE
• OPENING OPENING
•
•
• TRAP WEIR
• SANITARY TRAP WEIR COMBINATION
• TEE WYE&1l9 BEND
NOT ACCEPTABLE—
• (a) ACCEPTABLE (b) EXCEPT FOR TOILETS
AND SIMILAR FIXTURES
• Figure 9-17
• The Proper Fitting for Vertical Vent
Ta
• `�,
• � � FeFYw 1—�Faun
.ent
! 5
!
! bran
Figure 9-1 .
. Ore, Back-to-back Fixtures Instalieci with
Double Fixture Fitting
Figure 9-18
• Water Closet Vent
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i 2009 UPC Illustrated Training Manual
•
. Maintenance is the most difficult part of the FOG removal system.
The installation of these systems is mandated by codes and it is
irelatively easy to check compliance. However, ensuring that the
maintenance of these systems is accomplished is another matter.
• Although their maintenance is mandated, it is difficult, if not
• impossible, to ensure that it is being done. A poorly maintained
system is as useful as no system at all.
• When maintaining these systems two factors must be addressed
— service interval and FOG disposal. If the service interval is too
i long, the FOG will either simply pass through the overloaded
interceptor or begin to breakdown into other harmful compounds.
iLong-term storage of FOG in a large interceptor can create a
dangerous condition.The creation of hydrogen sulfide is a byproduct
iof FOG decomposition and could lead to the corrosion of piping and
• the interceptor itself,not to mention that it is a lethal gas if it escapes
the system.
i The development of the GRD and the FOG disposal system is a
result of this maintenance problem.They can at least eliminate some
• of the maintenance problems by removal or remediation of the FOG.
However,these devices do not solve all the maintenance issues.The
• devices will still need to be cleaned periodically and solids that have
entered the interceptor removed.
i 1014.1.3 Food Waste Disposal Units and Dishwashers. Unless
specifically required or permitted by the Authority Having Jurisdiction,
no food waste disposal unit or dishwasher shall be connected to or
• discharge into any grease interceptor. Commercial food waste disposers
• shall be permitted to discharge directly into the building's drainage
system.
• The disposal of the wastes from these devices into a grease interceptor
• will only harm the system.The solids from the disposal will become
entrained in the interceptor and begin to fill it unless cleaned out.If
• a disposal is connected to the grease interceptor,a solids interceptor
• must precede the grease interceptor. The entrance of soapy water
from a dishwasher into the interceptor will also be harmful to the
• system.The chemicals in dishwater will adversely affect the function
of the interceptor and must be kept from the system.
1014.2 Hydromechanical Grease Interceptors.
• The grease removal device(GRD)(see Figure 10-28)not only separates
• the FOG from the wastewater but also removes the FOG from the
interceptor. Normally, a hydromechanical grease interceptor (HGI)
• design is used in conjunction with the method of removing the FOG.
There are two basic types of GRDs:
• 1.Tbmr controlled.This typically utilizes a disk or belt that passes
• through the FOG layer and a squeegee device to wipe the
accumulated FOG from the disk or belt into a drain trough
• and into a FOG receptacle.Other means of removing the FOG
include a pump or gravity flow activated by the timer.
• 2.Sensor-controlled devices.These sense the presence of FOG and
initiate the removal process only when necessary and as often
• as necessary. The GRID can always keep the retained FOG
below the rated capacity of the device.They use valving and
• gravity or pump-assisted FOG removal.
1014.2.1 Plumbing fixtures or equipment connected to a Type A and B
• hydromechanical grease interceptor shall discharge through an
approved type of vented flow control installed in a readily accessible
• and visible location. Flow control devices shall be designed and installed
so that the total flow through such device or devices shall at no time be
• greater than the rated flow of the connected grease interceptor. No flow-
control device having adjustable or removable parts shall be approved.
The vented flow-control device shall be located such that no system vent
10-20 2009 UPC ITM
•
Traps and Interceptors
. shall be between the flow-control and the grease interceptor inlet. The
vent or air inlet of the flow-control device shall connect with the
sanitary drainage vent system, as elsewhere required by this code, or
shall terminate through the roof of the building,and shall not terminate
to the free atmosphere inside the building.
• Exception: Listed grease interceptors with integral flow controls
or restricting devices shall be installed in an accessible location in
• accordance with the manufacturers' instructions.
• The hvdromechanical grease interceptor(HGI) is a smaller device
and is basically what was referred to as the"grease trap," as earlier
• models did in fact function as the fixture trap(see Figure 10-27).The
term "hvdromechanical" refers to the use of air-injecting flow
• controls, counter flow baffles and barrier baffles along with the
• natural buovancy of FOG to accomplish its function of FOG
separation.
• ^'; - t
� i igu,�
Hydromechanical Grease Interceptor Design and Operation
• i�'� &lade TWWVJ ioturJEkCWKA1 LAIC9M"'r
• ArseynbS:''� ::..,�...C77.....4[nff Ur
Strum t7ur1 ..A F.,.t hm TMr Sh
• Gseaw Eftiumt
�:r 77vou,�Ji Straux�
quiel
Wet
Cleaul
• tic: ;Cater
Flow
In 5ohd. oil
• �7uu�+er T.O.Hen.� Flow
• Grease Removal Device
2009 UPC ITM 10-21.
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• 2009 UPC Illustrated Training Manual
• The HGI uses the principles of fluid dvnamics by taking
• advantage of air entrained in the effluent through the use of the
vented flow control (see Figure 10-29).The FOG-laden wastewater
• passes through the flow control on its way into the interceptor.As _
the effluent passes through the orifice of the flow control, air is
• introduced to the floe from the air vent. Upon entering the
• interceptor,the effluent is directed through the separation chamber.
The entrained air will separate from the effluent quickly and then
• accomplishes two tasks.The escaping air accelerates the separation of
FOG as it rises rapidly to the surface of the water in the separation
• chamber.The rising air burbles literally pull the FOG globules to the
top of the water. The released air then provides a small amount of
• positive pressure above the contents of the separation chamber to
regulate the internal running water level of the grease interceptor,
• keeping it from becoming air bound.
• A flow control shall be installed on each fixture discharging to
the HGI unless the exception is allowed (see Figure 10-29) for both
• installations of the flow control. The resulting total flow from the
fixtures must not be greater than the total flow capacity of the
• interceptor. There should also be no fixture vent between the flow
control and the interceptor. This would allow too much air to be
• entrained into the flow.
• The placement of the flow control is vitally important to the
functioning of the interceptor.It should be placed as close as possible
• to the fixture. There should be as little vertical height as possible
between the fixture outlet and the flow control. If the flow control is
placed well below the fixture, the added head pressure above the
flow control will render the flow control useless as it will increase the
• flow through the system(see Figure 10-31).
• 1014.2.2 The total capacity in gallons (L) of fixtures discharging into
any hydromechanical grease interceptor shall not exceed two and one-
half(2-1/2)times the certified GPM(IJs)flow rate of the interceptor as
per Table 10-2.
• For the purpose of this section, the term "fixture" shall mean and
• include each plumbing fixture, appliance, apparatus, or other
equipment required to be connected to or discharged into a grease
• interceptor by any provision of this section.
• An example of the use of this table is as follows:
An HGI rated for 35 DFUs has a maximum of 75 gpm.The total
• volume that could be retained by the fixtures in gallons would be
• 2 '.2 times 75 or 187.5 gallons. Should the fixtures connected to
the HGI have a gpm capacity greater than this,a larger HGI with
a higher gpm capacity must be used.
• When properly installed,flow control fittings ensure maximum
• efficiency for the interceptor in terms of grease retention.The velocity
of water is reduced to the capacity of the HGI. Elimination of the flow
• control would increase the velocity of the water entering the
interceptor,creating. turbulence in the device. This would permit the flow rate through the HGI to exceed its rated capacity,causing it to be
overloaded. Waste retention time in the HGI would be reduced and
• would not be of sufficient length to allow maximum grease
• separation.As a result of this reduced efficiency, undesirable waste
would be permitted to enter the drainage system, resulting in
• stoppages.Without the flow control device,a much larger and more
expensive grease interceptor would be required.
• It is recommended that unions be installed on either side of the
device to permit its removal for maintenance.
• 1014.2.3 A vent shall be installed downstream of hydromechanical
grease interceptors in accordance with the requirements of this code.
• The HGI itself must be vented to keep it from becoming air bound
• (see Figure 10-29). `
• 2009 UPC ITM
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Traps and Interceptors
• 1014.3 Gravity Grease Interceptors. Required gravity grease
interceptors shall comply with the provisions of Sections 1014.3.1 through
• 1014.3.7.
• The gravity grease interceptor is normally a large volume tank
constructed of steel,concrete,fiberglass or plastic with two sections.
Its function is relatively simple.The effluent enters the tank through
• a baffled tee so as to not disturb the accumulated FOG floating at the
top of the water level(see Figure 10-25).The effluent is retained in the
• initial chamber until flow forces it into the next chamber and
eventually out to the sewer. The FOG is separated by gravity-the
iFOG floats to the top of the water level. The tank is sized to allow
enough retention time to permit the FOG to separate.
• A sampling box is installed in the outflow line to enable
maintenance personnel to check on the functioning of the interceptor.
The following sections give guidance to the design, location and
. installation of the gravity grease interceptor(see Figure 10-32).
. 1014.3.1 General.
The provisions of this section shall apply to the design, construction,
• installation, and testing of commercial kitchen gravity grease
interceptors.
r, 1014.3.2 Waste Discharge Requirements.
1014.3.2.1 Waste discharge in establishments from fixtures and
equipment which may contain grease, including but not limited to,
TABLE 10-2
• Hydro-mechanical Interceptor Sizing Using Gravity Flow Rates'
• Size of Grease Interceptor
Diameter of Grease Maximum Full PipeOne-Minute Drainage Two-Minute
Drainage
• Waste Pipe Flow (gpm)2 Period(gpm) Period(gpm)
• 2" 20 20 10
3" 60 75 35
• 4" 125 150 75
5' 230 250 125
6" 375 500 250
• 1 For interceptor sizing by fixture capacity see the example below.
• 2 1/4"(.240)slope per foot based on Manning's formula with friction factor N=.012
• EXAMPLE FOR SIZING
• HYDROMECHANICAL INTERCEPTORS) USING FIXTURE CAPACITY
• Step 1:Determine the flow rate from each fixture.
[Length] X [Width] X [Depth] / [231] =Gallons X[.75 fill factor]/ [Drain Period(1 min or 2 min)]
• Step 2: Calculate the total load from all fixtures that discharge into the interceptor.
Fixtures Compartments Load (gallons) Size of Grease Interceptor
• One-Minute Drainage Two-Minute Drainage
• Period (gpm) Period (gpm)
Compartment size
• 12"x 24"x 12" 2 44.9
Hydrant 3
Rated Appliance 2
• 49.9 50 25
2009 UPC ITM 10-23
2009 UPC Illustrated Training Manual
• AIR INTAKE scullery sinks, pot and pan sinks,
(VENT) dishwashers, soup kettles, and floor drains
located in areas where grease-containing
I I materials may exist,shall be permitted to be
• FLOW �� intercdraineptor for when a into the pproved
waste through the
CONTRO p by the Authority
FITTMIO Having Jurisdiction.
• ` 1014.3.2.2 Toilets,urinals,and other similar
FLOW FLOW fixtures shall not drain through the
• FROM INTO interceptor.
DRAINS INTERCEPTOR 1014.3.2.3 Waste shall enter the interceptor
c through the inlet pipe only.
INLET OR 1014.3.3 Design.
• ALTERNATE CLEmOuT �ourLET 1014.3.3.1 Gravity Interceptors shall be
CLEANOUT OR� FLOW CONTROL ORIFICE constructed in accordance with the
• ALTERNATE INLET applicable standard in Table 14-1 or the
Figure 10-29 design approved by the Authority Having
Flow Control Device Jurisdiction.
• 1014.3.4 Location.
1014.3.4.1 Each grease interceptor shall be
. so installed and connected that it shall be at all times easily
accessible for inspection, cleaning, and removal of the intercepted
grease.A gravity grease interceptor complying with IAPMO Z1001,
shall not be installed in any part of a building where food is
handled.Location of the grease interceptor shall meet the approval
of the Authority Having Jurisdiction.
1014.3.4.2 Interceptors shall be placed as close as practical to the
• fixtures they serve.
1014.3.4.3 Each business establishment for which a gravity grease
• interceptor is required shall have an interceptor which shall serve
only that establishment unless otherwise approved by the
Authority Having Jurisdiction.
1014.3.4.4 Each gravity grease interceptor shall be located so as to
be readily accessible to the equipment required for maintenance.
1014.3.5 Construction Requirements.
1014.3.5.1 Purpose.Gravity grease interceptors shall be designed
• to remove grease from effluent and shall be sized in accordance with
this section. Gravity grease interceptors shall also be designed to
• retain grease until accumulations can be removed by pumping the
interceptor. It is recommended that a sample box be located at the
outlet end of all gravity grease interceptors so that the Authority
Having Jurisdiction can periodically sample effluent quality.
1014.3.6 Sizing Criteria.
1014.3.6.1 Sizing. The volume of the interceptor shall be
determined by using Table 10-3.
• 1014.3.7 Abandoned Gravity Grease Interceptors. Abandoned
grease interceptors shall be pumped and filled as required for
• abandoned sewers and sewage disposal facilities in Section 722.0.
• 1015.0 FOG (Fats, Oils,and Greases) Disposal System.
The FOG disposal system usually employs the HGI method for
• separating out the FOG. Disposal or. remediation of FOG is
accomplished by thermal,chemical,electrical or biochemical means.
• Each method attempts to change the molecular composition of the
FOG to render it harmless or to enhance the digestion of the FOG as
• it is retained in the interceptor(see Figure 10-28).
• 1015.1 Purpose. The purpose of this section is to provide the necessary
criteria for the sizing,application,and installation of FOG disposal systems
designated as a pretreatment or discharge water quality compliance
strategy.
1015.2 Scope. FOG disposal systems shall be considered engineered
• systems and shall comply with the requirements of section 301.2 of this code.
10-2 2009 UPC ITM
Traps and Interceptors
• Individual components of the FOG disposal system may meet
applicable standards but the system as a whole must be submitted to
• the AHJ and be designed by a plumbing engineer or a design
professional. The manufacturer's specifications and installation
• instructions shall be followed at all times. See Figure 10-28 for an
illustration of this system.Refer to Chapter 3,Alternate Materials and
Methods,for the procedure to be followed for acceptance by the AHJ.
1015.3 Components, Materials, and Equipment. FOG disposal
i systems,including all components,materials,and equipment necessary for
the proper function of the system, shall comply with sections 301.1.3 or
• 301.2 of this code.
1015.4 Sizing Application and Installation.FOG disposal systems shall
be engineered, sized, and installed in accordance with the manufacturers'
specifications and as specified in ASME Al12.14.6, as listed in Chapter 14,
Table 14-1 of this code.
• 1015.5 Performance. FOG disposal systems shall be tested and certified
as listed in Chapter 14, Table 14-1 of this code, and other national
• consensus standards applicable to FOG disposal systems as discharging no
more than 100 mg/L FOG.
• 1016.0 Sand Interceptors.
1016.1 Where Required.
• 1016.1.1 Whenever the discharge of a fixture or drain may contain
solids or semi-solids heavier than water that would be harmful to a
• drainage system or cause a stoppage within the system, the discharge
shall be through a sand interceptor. Multiple floor drains shall be
• permitted to discharge into one (1) sand interceptor.
1016.1.2 Sand interceptors are required whenever the Authority
. Having Jurisdiction deems it advisable to have a sand interceptor to
protect the drainage system.
• A sand interceptor is a device designed and installed to separate and
retain deleterious, hazardous or undesirable matter from normal
• wastes and permit normal sewage or liquid wastes to discharge into
the sewer by gravity(see Figure 10-33).The sand interceptor is often
• used in garage or car wash installations to collect deposited sand before
entry to the public sewer.Multiple floor drains are used and may drain
• Table 10-3
Gravity Grease Interceptor Sizing
. DFUs(1.3) Interceptor Volume(2)
8 500 gallons
21 750 gallons
• 35 1,000 gallons
90 1,250 gallons
• 172 1,500 gallons
216 2,000 gallons
307 2,500 gallons
• 342 3,000 gallons
428 4.000 gallons
• 576 5,000 gallons
720 7,500 gallons
2112 10,000 gallons
i 2640 15,000 gallons
Notes
• (" The maximum allowable DFUs plumbed to the kitchen drain lines that will be connected to the grease interceptor.
• (2) This size is based on:DFUs,the pipe size from this code;Table 7.5.Useful Tables for flow in half-full pipes(ref:Mohinder
Nayyar Piping Handbook,3rd Edition, 1992).Based on 30-minute retention time(ref.:George Tchobanoglous and Metcalf
• &Eddy. Wastewater Engineering Treatment,Disposal and Reuse,3rd Ed. 1991&Ronald Crites and George Tchobanoglous.
Small and Decentralized Wastewater Management Systems, 1998). Rounded up to nominal interceptor volume.
• (3) When the flow rate of directly connected fixture(s)or appliance(s)have no assigned DFU values, the additional grease in-
terceptor volume shall be based on the known flow rate(gpm)multiplied by 30 minutes.
2009 UPC: ITM 1.0-25
2009 UPC Illustrated Training Manual
• to a single interceptor.The floor drains from these installations need
not be trapped as they are not connected directly to the sanitary system
• and could become plugged vvith accumulated sand.
. 1016.2 Construction and Size.
Sand interceptors shall be built of brick or concrete, prefabricated coated
• steel, or other water-tight material. The interceptor shall have an interior
baffle for full separation of the interceptor into two (2)sections. The outlet
pipe shall be the same size as the inlet pipe of the sand interceptor, the
minimum being three(3)inches (80 mm), and the baffle shall have two (2)
openings of the same diameter as the outlet pipe and at the same invert as
. the outlet pipe. These openings shall be staggered so that there cannot be
a straight line flow between any inlet pipe and the outlet pipe. The invert
_'Vo
Note that each fiodtwo is
• individually trapped and
v1r vented in accordance
• with Section 1(14.5
• _. - Note that the air al let or
vent an the flog control
• bodies are connectod
to the sanit
ary vent as
• required by Section
CD
1 U 14.3.
• - Note that itie saw control
1flt devices are insalied
1 such that n0 system
• E �� vent is located between
the flow contra and the
• - 1 grease trap asreguired
This nstailatiDn is in accordance vrth 25 by Section 1014.3
• Section 1014.3.Note that the stir•. �J
iota;of the nowcontrol GPM refine
dons not exo ed the rating of the
• grease trap.
•
• Please be aware that the
use of a single flowcontrot
• Pst.snkha may create a sihlaton where
Air a tqh dactwga a single fixture with a high
rate GPM discharge can actually
• cause a backup in fie othw
Ar fixture due by the restricting
• onfice in the flow control
_ body
• i This type of installation is
not recommended for fixtures
• Sir having flood-levot rims at
rk
am lndircct different elevations because
Yvasle V of the greater probability that
Raaceptor '' a high discharge rate from the
a �•"'� highest fixture will back up into
• ti.w,"Y '` the lower fixture.
• 2$ 4 — ;t the example
This installation is allowed only if it is tCu_ at be(tr the discttarg;from ttto
• syccifically in acaxdana:with man'- pot sank may back up and flood
Wuv.T's insiruc5wr,. Scc Sc dion the indirect ves4:receptor
1014.3 crceeAiu._ gnckupc con be ov-Ndod by
selecting a grease trap that
has a higher t>pteq discharge
• �: rating than either of the fiodures
oonnerted
. Figure 10-30
• Flow Control Installation
10-26 2009 UPC ITM
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•
Traps and Interceptors
•
of the inlet pipe shall be no lower than the invert of the outlet pipe.
• The sand interceptor shall have a minimum dimension of two (2) feet
• square (0.2 m2)for the net free opening of the inlet section and a minimum
depth under the invert of the outlet pipe of two (2) feet (610mm).
• For each five(5)gallons(18.9 L)per minute flow or fraction thereof over
20 gallons(75.7 L)per minute, the area of the sand interceptor inlet section
is to be increased by one (1) square foot (0.09 m2). The outlet section shall
at all times have a minimum area of fifty(50) percent of the inlet section.
• The outlet section shall be covered by a solid removable cover, set flush
•
• VTR VTR VTR
A/ M! N
i SIrks have high t
• # discharge rates i 1
7
• �g� A 1 a 1
Scvliery a l 84ge6tly 1 Sail?
i o 1
Sn>4c 3 1 s�Ik A Si Y E
• 1 �
/
• v
• Flow control 50 gprn 1Q
• flow wntrol
3R flrnv con[rt?I
3 E 1
• 1 E / � y
1 1 1
• i 1 1
E 1 i
• Flow 50 gpm Flow=65 gpm Flow= 190 gpm
• 'Figure -31
• Placement of Flow Control Device.
• INTERCEPTOR
AIR INTAKE COVER
• VENT
MLEfi 0CrrL=T
won
• agG � .
ACCUMULATION SAff!�'
• FLOW y az t PCIN—
REGULATORY ACCUMULATION
• DEVICE
• S _ _ i
i()=0S
.,-;fire 10-32
Gravity' Grease lnt:erceptor with Flow Control (if needed)
• and Sample Box
• 2009 UPC ITM 10-27
•
•
•
• SMITH" JAY R. LOCATION y
= SMITH MFG. CO."
• DIVISION OF SMITH INDUSTRIES,INC. „-
POST OFFICE BOX 3237
MONTGOMERY,ALABAMA 36109-0237(USA)
• CUSTOMER TEL'334-277-8520 FAX 334-272-7396 w ,rs th.rom 8 MEMBER OF:
orxvEH r�'.
LARGE CAPACITY GREASE INTERCEPTORS
N
41
0 Li
LU
0 Z LARGE CAPACITY - STEEL
Z o GREASE INTERCEPTORS WITH INTEGRAL EXTENSION
>
• Z c FUNCTION: Used in large kitchens or institutions where there is an anticipated high rate of discharge of grease and oil
• ? laden waste from the fixtures. Large fabricated steel units available from 75 to 500 gallons per minute are most adaptable to
w industrial applications such as food processing and packaging plants. Integral extension permits a greater dimension from
• Q y center line of inlet and outlet to finished floor level to accommodate deeper roughing conditions. "X"dimension should
N always be specified when ordering.
Ul
• z Note: F-Body Width Non-Skid Cover
0 o X-Always i t
i Z Specify _F------------ --------- ---
----------------
Additional i *ket
ICJ 4
• m Recessed Lift Ring �2 1/2 64
Height ( )
ZRequiredCleanouWfAnchor Flange
Z (When Specified)
73q Neoprene G Inlet A— OutletZ E ', Alr Relie CERTIFIED
B Static WaterB o
m Removable Baffles ♦Fig.8450E carves the
• O V' Plumbing and Drainage
Ui Y Institute Certification Seal
• p -- Certifying conformance to
C Grease Interceptor Standard
0
c W Fig.8450E Shown PDI G10�.
• o D
• 5 NOTE: It is the responsibility of the 'Recommended outlet size. Large sizes available-Specify.
m a ° installer to check all parts(internal and
• o external)to verity they are in their proper
w w operating order and location. WHEN ORDERING,SPECIFY HEIGHT REQUIRED FROM TOP OF
v z INTERCEPTOR TO TOP OF EXTENSION USING SUFFIX NUMBER FOR
• w a NOTE:2"(51)min.extension EXTENSION HEIGHT. EXAMPLE:FIG.8460E WITH 6"(150)
k=j U available.Anchor flange and flashing EXTENSION-SPECIFY FIG.8460(-E06)
• z clamp not available on less than Inlet
a 4"(100)extension. PCNI GPM Grease and Dimensions C.O.
• Z REGULARLY Fig. Flow, Cap Outlet Roughing Bo Plug
No. Rate Lbs. Size Dimensions Height Width Size
• m a FURNISHED:
N Steel Interceptor with Gray A8450EI 75 1 150 04 100 21 1/2 545 15 1/2 395 50 1270 37 940 30 1/2 775 13 76
0 W Duco Coating Inside and 8460EI 100 200 04 100 27 685 16 1/2 420 54 1372 43 1/2 1105 33 1/2 850 3 76
° ? Outside and Flow Control 8465E' 150 300 05 125 33 840 17 1/2 445 60 3/4 1543 50 1/2 1283 38 1/2 980 AM
• a Fitting. Extension Height as 8470EI 200 400 05 125 37 940 17 1/2 445 67 3/4 1720 54 1/2 1385 43 1/2 1105 AM
Specified. E848
75E 250 500 05 125 40 1015 18 455 73 3/4 1875 58 1473 47 1/2 1205 4 100W NOTE: Dimensions shown in 0E 350 700105(125).43 1/2(1105) 18 455 85 3/4 2178 61 1/2 1562 54 1/2 1385 4 100
• �y ° parentheses are in millimeters. 8490E 500 1000 06(150) 48(1220 18(455) 1103 1/4(2623)1 66(1675) 164 1/2(1640)5(125)
• w W OPTIONAL MATERIALS: VARIATIONS:
0 ' Acid Resistant Coating Inside-ARI Anchor Flange-F
• UjAcid Resistant Coating Outside-ARO Flange with Flashing Clamp-F-C
W Acid Resistant Coating Inside and NO-HUB Adaptor(2) Req'd (Specify Fig.2646Y)
CQ Outside-ARIO Sediment Bucket-B
• w ®Aluminum Cover-AC Traffic Rated Cover-H20
00
• H 2-3-05 Revised Variations RN CL WEIGHT VOLUME FIGURE NUMBER
G 11-30-04 Added PDI Note TBW BS POUNDS CUBIC FEET
• z F 9-30.03 Revised Table RN CL
E 8-13-02 Removed Anchor Flange RN BS 8400E SERIES
• LL z REV. DATE DESCRIPTION BY CKD.BY a
•
•
• Interceptors Technical Data :: Sizing Interceptors According to PDI Standard PDI-G101 Page 1 of 2
• +w FAMILY OF PRODUCTS: JRSPRODUCTS.COM CONTRACTOR-FRIENDLY PRODUCTS GREEN BUILDING PRODUCTS RAINWATER HARVESTING STORE
r. �d SMITH MF4 CO.
• 4\ : HOME ABOUTUS PRODUCTS {NTERNATONAUCANADA MARKETINGPORTAL CONTACTUS SEARCH U'.1 RSS FEED
•
• SIZING INTERCEPTORS ACCORDING TO PDI STANDARD PDI-G101
• The recommendations for sizing,installation and maintenance of grease interceptors contained in this section are based on experience of the industry and
were taken from PDI-G101.
•
• Sizing Considerations
A grease interceptor conforming to Standard PDI-G301 is designed and certified to operate efficiently at its rated capacity.The larger the interceptor the
• higher the flow rate it will handle efficiently with a greater quantity of grease retained before cleaning is required.While a small interceptor,undersized,can
accommodate a flow of waste water well in excess of its rated capacity,it will not intercept grease efficiently under such overload conditions.
• Fixture drainage period,in combination with the service required and the quantity of waste water involved,establishes the rate of Flow through the grease
interceptor.Flow rate is therefore the primary gauge which establishes interceptor size or capacity.
• The link between flow rate and drainage load to produce satisfactory grease interceptor operation is a Flow Control Fitting.Without it,a correctly sized grease
• interceptor will not regulate the flow of water discharged from the fixture it is serving.Therefore,to ensure that the flow rate does not exceed the grease
interceptor's rated capacity,a flow control fitting is essential for protection against overloading the grease interceptor which could occur from sudden surges
from the fixture.The flow control fitting will control the flow of waste water at all times,enabling the interceptor to operate at its certified capacity.
•
• Size Symbols
It has been determined through the testing and rating procedure that eight(8)different
• sized grease interceptors are required for normal domestic,commercial,and institutional
installations.These sizes are based on certification standard flow rates and grease
• ,.. retention capacity ratings for grease interceptors,see Table 1.Table 2 lists the PDI size
symbol for each of the standard rated grease interceptors.
• P-R- Cap.nryRatlq :,ma-. Sizing Procedure
icnt) I (U.) {waad.l PVI rcea i (L) Table 3 is provided to show the standard formula in steps for sizing grease interceptors
• 7=k
4 025 R 3.61037.91 to suit requirements of specific fixtures.
Lhe i om 14 i 11 17.5 662
10 0.63 20 of 25.0 046 Selection
• Far La re 095 30 136 37.5 1411 Table 4 is included as a selection chart for standard PDI Certified grease interceptors
L)a elk. U 1 26 40 I82 50.0 1603 applicable to various size fixtures commonly used in domestic,commercial and
Comm -L.,H 2a I 1.5R 60 22.7 62S 236.6
• lmuw 1o.I U. 35 2 zU l0 31.9 $7.5 331.2 institutional installations.The selections listed are based on the sizing formula covered
SU SIG I 100 45.4 125.0 4711 in Table 3.
• nM Dishwashers
PD1 Sb..5i.br1 1 J 1 7 1 10 15 20 25 35 50 A separate grease interceptor is recommended for each commercial dishwasher.The
• Five-Re GPM 4 7 10 1s 20 25 35 so size of the interceptor is determined by the GPM discharge rate of the dishwasher.
La .25 .44 ,63 .95 1.26 I.SS 220 3.16 Select proper interceptor of equivalent or next higher rate from Table 2.
• FoanmL ) 6 1 14 1 20 30 40 50 70 100
Kf. 3.6 6451 13.8 192 22.7 31.9 45.4 Multiple Fixtures
When multiple fixtures are served by a single interceptor,calculate the total capacity of
• all fixtures,establish the maximum number of fixtures that may be drained
, 7. simultaneously and apply this factor to the total capacity to determine the maximum
s<«r. Famkl. Ena,pl. simultaneous capacity.Then proceed with sizing and selection of interceptor using sizing
• Determlrr..ckbk ea,eant of Aa*48'w.g by 24• formula,Table 3.
• nr4we by 3'Plitnr rtle by 12'deep.G,bk
rr• hnh X Width a depth =,.48 x 24 7(
cu 12-13.824 bk la.hen
2 DeenWlecaPKW111Rdlee. Cokwkal1gelhm Alternate Sizing Method Based on Drainage Fixture-Units
• 1 yl .z31 amk k be 119241431-59.60Jan, Most plumbing codes list drainage Fixture-Unit values for plumbing fixtures and for
3 Lkee am -.9 dmi w A.kW dral.roloid fixtures not listed,these values are given for drain outlet or trap size.Fixture-Unit
wed. Dw Ihttae is rK,mi oy
• rd.dmalxie75"..olcvp- .75x19.8.449weti.. values are converted to discharge rates on the basis of one Fixture-Unit equaling 7.5
IlW vnl.r Tn,k.r,s
berg GPM.See Table 5 for recommended PDI size grease interceptor based on drainage
vrWo ee.W,a ab"
• 2s4 ar,h.I._rear«.. Fixture-Unit sizing method.
Ora ar:a W lft.91 k+.d v
79'd%n wprrn
• { DIw.,,: (I-ran an id CalnYwe ric-rere rar
drarWv panod. I p-W ilo prod
l yHdpnLLlo dkreea l
rXkNM
re aabaye V•rkd;Iw- 44.911.44.9-PNI I--C. vT,lO,.ay GPIr POr
• rmx...hne<aadkmo P-JI. Flow Rile Sm iirk., ink�Ma. A= S.Gi.►1�a rrr
Mn f2i mace dmrape 1-l:'{ i 7,5 IO
Perwd rr aaep W Dnk-a T.-,d..,.p.nwt
P.�dsdea..>lrrpery,.d 1-112 2 15.0 15
• ro comPlerd.dne de rbame. 44 912-ZZ.S r;PN4
Fy-.Rme 2 3 22.0 25
D ak ee•
Flay,rat.` e1v Icaa 2-1/2 4 30.0 35
Dnuwre Nmd 3 5 37.5 50
4 6 450 50
T.b
• Saba ,,kortUr.From Far aof-mlatep.nod-
H 2 2 a.kn inte,coptorLl. PDI GPM req,dm
wblrh cvrmppnM w ties PDI.te-541'
dp+'rale caku4wd.Note:
• Se n..v I.W a when Far Mn.mirwle prtod-
fitter,"K tYr„e«„Ma .2s cPN4.eG,krr Additional Links:
:W,lined. PD1.Ire 25' Example for Sizinq Grease Interceptors
• Typical Single Fixture Installations
Multiple Fixture Installations
• Dishwasher Installation Installation
•
•
•
•
http://www.jrsmith.com/products/inter/tech/td_sizing_inter.htm 11/27/2010
•
•
•
Vermaco"
� SIVA01*WAV
Sizing Point Source Systems
• J Y
• Single Fixture Sizing Suggestions
•
Use this chart to help size Big Dipper equipment that will service a single fixture. Single fix-
ture Big Dipper equipment is designed to sit on the floor beside the fixture it is servicing. For
basement installations or installations where the Big Dipper will be more than 6 feet(1.95 m)
• beneath the fixture it is servicing Thermaco, Inc. recommends the next larger unit be installed
• as well as installing the VFCA Vented Flow Control Assembly. Consult a licensed plumber
• regading your specific requirements.
Fixture Description Comp Suggestedartment Size Pipe Size GPM Rating System
• -
• i Sink 1-3 Compartments 18"x 18"x 12"D 2" 20 W-200-IS
• Sink 1-4 Compartments 18"x 24"x 15"D 2" 25 W-250-IS or
• W-250-AST
• Sink 1-4 Compartments 24"x 24"x 15"D 3" 35 W-350-IS
• Wok Range Wok Range with 1-5 Wok Stations 2" 15 W-150-IS
•
• Wok Range Wok Range with 5+ Wok Stations 2" 20 W-200-IS
• Pre-Rinse Station" N/A W-200-IS
• 1 Ventilation Hood Use equipment manufacturer's peak gpm rating
• Other Fixtures or Appliances Use equipment manufacturer's peak gpm rating
•
• 'To minimize grease/detergent emulsification, plumbing dishwashers directly into the sanitary sewer line
is recommended. Consult local codes or a licensed plumber when considering plumbing a dishwasher to a
• Big Dipper unit.
• "Thermaco recommends the use of the FS-1 Flat Strainer or ESU-1 External Strainer Basket in combination with
• the Big Dipper in pre-rinse areas.
•
• Sinale Fixture Big Dipper Equipment
• Model GPM Rating
• W-150-IS 15
• W-200-IS 20
• W-250-IS & W-250-AST 25
• W-350-IS 35
W-500-IS 50
•
• 02007 Thermaco. Inc. -All rights reserved - Patented/Patents Pending - Specifications subject to change without notice
2 646 Greensboro St. •Asheboro, N. C. 27204-2548 - Phone(336) 629-4651 - North America: (800)633-4204 2/07
• E-mail: info@thermaco.com -Online: www.big-dipper.com
0