ZURN Proceptor OMC 50 Technical Manual

11
PROCEPTOR®
TECHNICAL MANUAL
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Procedure for Sizing Grease Interceptor
Table 8.3.2 is provided to show the standard formula in steps for sizing grease interceptors to suit requirements of specific
fixtures. An example of this sizing formula application is inc1uded to illustrate the steps.
Table 8.3.2 Procedure for Sizing Grease Interceptors
Steps Formula Example
1
Determine cubic content of fixture
Multiply length x width x depth
A sink 48" long by 24" wide by 12" deep
Cubic content: 48 x 24 x 12 = 13,824 cubic inches
2
Determine capacity in gallons
1 gal. = 231 cubic inches
Content in gallons
13, 824 = 59.8 gallons
231
3
Determine actual drainage load. The fixture is
normally filled to about 75% of capacity with water.
The items being washed, displace about 25% of the
fixture content, thus actual drainage load = 75% of
fixture capacity.
Actual Drainage Load
.75 x 59.8 = 44.9 gallons
4
Determine flow rate and drainage period. Ingeneral,
good practice dictates a 1 minute drainage period;
however, where conditions permit. a 2 minute
drainage period is acceptable. Drainage period is the
actual time required to completely drain the fixture.
Flow rate = Act ual Drainage Load
Drainage Period
Calulate Flow Rate
For 1-minute period:
4 4.9 = 44.9 gpm Flow Rate
1
For 2-minute period:
4 4.9 = 22.5 gpm Flow Rate
2
5
Selective Interceptor
From Table 1 select Interceptor which corresponds to
the flow rate calculated.
Note: Select next larger size when flow rate falls
between two sizes listed.
Select Interceptor
For 1-minute period –
44.9 gpm requires PDI size 50
For 2-minute period –
22.5 gpm requires PD! size 25.
Sizing by Known Compartment Sizing
Table 8.3.3 is included as a selection chart for standard PDI Certified grease interceptors applicable to various size fixtures
commonly used in domestic, commercial and institutional installations. The selections listed are based on the sizing formula
covered in Table 8.3.2 by GPM.
Table 8.3.3 Selection Chart
Fixture Compartment Size
(inches)
Number of
Compartments
Drainage Load
(gallons)
Recommended PDI Size Grease Interceptor
1-minute
Drainage Period
2-minute
Drainage Period
18 x 12 x 6 1 4.2 7 4
16 x 14 x 8 1 5.8 7 4
20 x 18 x 8 1 9.4 10 7
18 x 6 x 8 2 15.0 15 10
20 x 18 x 8 2 18.7 20 10
30 x 20 x 8 1 15.6 20 10
24 x 20 x 12 1 18.7 20 10
22 x 20 x 8 2 22.9 25 15
22 x 20 x 12 2 34.3 35 20
24 x 24 x 12 2 44.9 50 25
22 x 20 x 12 4 68.6 75 35
24 x 24 x 12 4 89.8 100 50

ZURN Proceptor OMC 50 Specifications

General

Brand	ZURN
Model	Proceptor OMC 50
Category	Water Filtration Systems
Language	English