Do grease interceptors need to be vented?
Grease interceptors must have a vented waste, sized in accordance with code requirements for venting traps, to retain a water seal and to prevent siphoning.
How far should a vent be from a trap?
30 inches
trap, the distance from the weir of the trap to the vent pipe opening “shall not” exceed 30 inches.
What is the difference between a grease trap and a grease interceptor?
Whether the unit is a grease trap or grease interceptor, the technology works the same. The difference between a grease trap and a grease interceptor is the flow rate of wastewater that the device can handle. A grease trap works well with a lower volume of flow; less than 50 gallons per minute.
Is Wet venting allowed in California?
One or two vented lavatory(s) shall be permitted to serve as a wet vent for a bathroom group. Only one wet-vented fixture drain or trap arm shall discharge upstream of the dry-vented fixture drain connection. Dry vent connections to the horizontal wet vent shall be in accordance with Section 905.2 and Section 905.3.
Are s traps illegal in California?
1004.1 Prohibited “S” traps, bell traps, and crown-vented traps shall be prohibited. No fixture shall be double trapped.
Can a grease trap drain into a floor sink?
It depends on your local code but here I’ve installed properly vented grease traps under three compartment sinks and the discharge emptied into a floor sinks or floor drains w/ funnels to prevent spalshing, with an air gap of course.
How do grease traps and interceptors work?
As the wastewater cools, the fat, oil, and grease (FOG) harden and the food solids settle. The FOG, being lighter than water, floats to the top of the grease trap. The wastewater is forced through the grease trap and out to the sanitary sewer.
Do grease interceptors need power?
Caution – Do not apply power until all provisions of Personal Safety Procedure #29CFR 1910.335 and Lockout and Tag Procedure #29CFR 1910.147 are in compliance. The Zurn Z1192 must be installed complete with solids interceptor and proper flow control unit.
How do you vent a grease interceptor?
A Hydromechanical Grease Interceptor (HGI) does not require to be directly vented unless specifically mandated by local code or by law. Venting is required on the downstream drain line – the same as most other plumbing appliances and fixtures to allow efficient and unrestricted discharge of the waste water.
Do you vent before or after p-trap?
However, we are a little bit confused as we have read places that state that the vent should always be AFTER the p-trap. After the p-trap the pipe will go 7 feet and join the main soil stack, which, of course, has a vent.
Can a vent pipe run horizontal?
1. Can Vent Pipeline be Horizontal? There is no problem with running your vent pipes horizontally as long as you remember that there should be a minimum clearance of 6 inches above the spill line. Keep this clearance in mind and you should have no problem with horizontally installed vent pipelines.
What are the regulations for grease interceptors?
Each fixture discharging into a grease interceptor shall be individually trapped and vented in an approved manner. Grease interceptors shall be maintained in efficient operating condition by periodic removal of the accumulated grease and latent material. No such collected grease shall be introduced into drainage piping or a public or private sewer.
Can a dishwasher be connected to a grease interceptor?
No food waste disposer or dishwasher shall be connected to or discharge into a grease interceptor . Commercial food waste disposers shall be permitted to discharge directly into the building’s drainage system.
Can a commercial food waste disposer discharge into a grease interceptor?
Commercial food waste disposers shall be permitted to discharge directly into the building’s drainage system. Exception: Food waste disposers shall be permitted to discharge to grease interceptors that are designed to receive the discharge of food waste.
What are the requirements for an oil and flammable interceptor?
Oil and flammable interceptors shall be provided with gas tight cleanout covers that shall be readily accessible. The waste line shall be not less than 3 inches (80 mm) in diameter with a full-size cleanout to grade.