Brochure

- 11 -
Sizing by Capacity
Capacity: Based on the volume of wastewater discharge (gallons) into the interceptor expressed as discharge xture units
(DFU’s). DFU’s are identied in the currently published issue of Uniform Plumbing Code Ch.7 based on occupancy or use.
Note: Capacity sizing is typically applied to gravity grease interceptors (GGI) resulting in a liquid capacity that is substantially greater
than an equivalent hydromechanical GI. An HGI due to its qualied eciency and grease capacity at breakdown (when eciency
falls below 90%) results in actual grease capacity that is operationally equivalent to a GGI that is 5-6 times that of the HGI.
Floor Drains & Floor Sinks: Take
the volume of water produced by the
number of hose bibs (ie 1.5-2.0 gpm per
3/4” faucet)
Example: Commercial sink with food
waste with 1-1/2” trap, plus mop sink and
special purpose sink 2” trap.
3+3+3=9 (DFU)
Referencing table below 9 DFU will require
750 gallon min. interceptor volume.
Drainage
Fixture
Units
Interceptor
Volume
(min.)
8 500
21 750
35 1000
90 1250
172 1500
216 2000
Fixture Fixture Units Public
Floor drain, non-emergency 2
Special purpose sink w/1-1/2” trap 3
Special purpose sink w/2” trap 4
Special purpose sink w/3” trap 6
Commercial sink w/food waste w/
1-1/2” trap
3
Bar Sink 2
Mop Sink 3
Laundry Sink 2
• Part Number 3907A02 3910A02 3915A02C 3920A02 3925A02LO 3925ALT02 (2”)
3925ALT03 (3”)
3935A03 (3”)
3935A04 (4”)
3950A03 (3”)
3950A04 (4”)
4075A04 40100A04
US Gallons Per Minute - GPM (L/Sec) 7 (0.44) 10 (0.63) 15 (0.94) 20 (1.26) 25 LO (1.6) 25 (1.6) 35 (2.2) 50 (3.2) 75 (4.74) 100 (6.3)
Grease Capacity Min - lb (kg) 14 (6.35) 20 (9.07) 30 (13.6) 40 (18.1) 50 (22.68) 50 (22.68) 70 (31.8) 100 (45.4) 150 (68.2) 200 (90.8)
Average Eciency % (ASME A112.14.3) 95.5% 92.5% 92.0% 95.4% 97.1% 98% 98.6% 93.9% 98% 99%
Grease Capacity Actual - lb (kg) 31.95 (14.49) 38.07 (17.28) 40.97 (18.58) 76.4 (34.65) 53.4 (24.22)
* 56.25 (25.51) 138.5 (62.8) * 122.07 (55.3)
559 (253) 1058 (480)
Operating Temperature Capabilities
220˚F
(104˚C)
220˚F
(104˚C)
220˚F
(104˚C)
220˚F
(104˚C)
220˚F
(104˚C)
220˚F
(104˚C)
220˚F
(104˚C)
220˚F
(104˚C)
160˚F
(71˚C)
160˚F
(71˚C)
Surface Load Capacity
440 lb
(200 kg)
440 lb
(200 kg)
440 lb
(200 kg)
440 lb
(200 kg)
440 lb
(200 kg)
440 lb
(200 kg)
440 lb
(200 kg)
440 lb
(200 kg)
20,000 lb
(9072 kg)
20,000 lb
(9072 kg)
Unit Weight (Empty)
15.8 lb
(7.17 kg)
15.8 lb
(7.17 kg)
15.8 lb
(7.17 kg)
23 lb
(10.4 kg)
23.9 lb
(10.85 kg)
45 lb
(20.4 kg)
45 lb
(20.4 kg)
60 lb
(27.2 kg)
233 lb
(106 kg)
283 lb
(128 kg)
Liquid Capacity
12.96 gal
(49.06 L)
12.96 gal
(49.06 L)
12.96 gal
(49.06 L)
21.6 gal
(81.8 L)
18.9 gal
(71.54L)
39.4 gal
(149.1 L)
39.4 gal
(149.1 L)
52.0 gal
(197 L)
158 gal
(598 L)
257 gal
(973 L)
Connection size (mechanical joint only)
2” 2” 2” 2” 2” 2” (3925ALT02)
3” (3925ALT03)
3” (3935A03)
4” (3935A04)
3” (3950A03)
4” (3950A04)
4” 4”
Technical Specications
Dimensions - Flow Control Device Assembly
Grease Capacity Min - lb (kg): Industry minimum grease capacity based on GPM ow rate. Requires minimum 2 lb of grease capacit y for each GPM of ow.
Grease Capacity Actual - lb (kg): Actual capacity at breakdown when tested to ASME A112.14.3
Flow Control Body Air Intake Tee
Connection
Iron Pipe
Size (Solvent
weld)
2” h x h 3” h x h 4” h x h 3” spg x h 4” spg x h
XL Models
4” h x h
A 3”
(76.2mm)
4.23”
(107.4mm)
6.13”
(155.7mm)
2.67”
(67.8mm)
3.19”
(81mm)
3.19”
(81mm)
B 3.84”
(97.5mm)
5.93”
(151mm)
6.84”
(173.7mm)
4.01”
(101.9mm)
5.04”
(128mm)
5.04”
(128mm)
C - - - 2.27”
(57.7mm)
2.72”
(69.1mm)
2.72”
(69.1mm)
1 Piece Compact Flow Control 2 Piece Flow Controls (3” Version Illustrated)
Flow Control & Air Intake Combined
Connection
Iron Pipe
Size (Solvent
weld)
Compact
2” h x h
A 3.94”
(100mm)
B 3.44”
(87.4mm)
C -
A
B
AIR INTAKE TEE
on XL models 4” hxh
* Not evaluated to breakdown capacity (PDI-G101)