Do you need a trap before a grease trap?
The Uniform Plumbing Code (UPC) does not permit a grease interceptor to serve as a fixture trap and also prohibits the installation of a vent between the air intake on the flow control and the grease interceptor. There needs to be a trap and vent between the fixture and the vented flow control fitting.
Is a grease trap a plumbing fixture?
A grease trap/grease inceptor is in simple terms a plumbing fixture that contains decomposing food waste, bettering the sewer system.
What type of plumbing trap is prohibited by most local plumbing rules?
The “S” trap is prohibited under the Uniform Plumbing Code throughout the United States. This is because the “S” trap will siphon or suck water out from the trap which will end up releasing methane (sewer) gases into the home. So, it is a code violation and if you are doing remodeling, you will have to replace it.
What section of the IPC are traps?
Section 901.2. 1 of the IPC establishes that traps and trapped fixtures shall be vented in accordance with one of the venting methods specified in this Chapter. Section 904.1 requires the vent system serving each building drain to have at least one vent pipe that extends to the outdoors.
Where does the flow control go on a grease trap?
The flow control device should be installed in the waste line upstream of the grease interceptor. It should be placed beyond the last connection from the fixture(s) and as close as possible to the underside of the lowest fixture.
What is the maximum number of fixtures allowed to be connected into any grease trap?
Not to exceed four (4) separate fixtures shall be connected to, or discharged into, any one grease trap or interceptor.
How much does it cost to install a grease trap?
Q: What will a grease trap cost my business? A: The average install for a small grease trap (0-100 gallons) is between $250 and $1500. The average cost for the installation of a new grease trap (750-1500) is between $4,000 and $8,500. Grease recovery devices cost between $3,500 and $6,000.
Can a grease interceptor be used as a trap?
The code does allow the interceptor to serve as a trap (assuming that this interceptor is intended to serve as a fixture trap) thus adding a trap to the fixture upstream of the interceptor creates a double trapped fixture installation. Either adding a vent to the trap or removing the trap on the fixture altogether would solve the problem.
What do you call a grease trap in plumbing?
In some building codes and plumbing texts you will see increased use of the term interceptor where you may be more familiar with the term plumbing trap. In particular, grease traps are referred to now as hydromechanical grease interceptors or gravity grease interceptors.
How does grease get into the sanitary sewer system?
Fats, oils and grease (FOG) finds its way into the sanitary sewer system through virtually every fixture in the kitchen at one time or another.
Can a combination plumbing fixture be installed on one trap?
2. A combination plumbing fixture is permitted to be installed on one trap, provided that one compartment is not more than 6 inches (152 mm) deeper than the other compartment and the waste outlets are not more than 30 inches (762 mm) apart. 3.
Where does a grease interceptor need to be installed?
The drain from the center-compartment of the sink blocks the removal of the cover for inspection and maintenance. Model plumbing codes require each fixture discharging into a grease interceptor be individually trapped and vented, and require the installation of a vent downstream of the grease interceptor.
What is the International Plumbing Code for above ground drainage?
702.1 Above-ground sanitary drainage and vent pipe. Above-ground soil, waste and vent pipe shall conform to one of the standards listed in Table 702.1.
Fats, oils and grease (FOG) finds its way into the sanitary sewer system through virtually every fixture in the kitchen at one time or another.
What are the regulations for indirect waste pipes?
Plumbing fixtures or other receptors receiving the discharge of indirect waste pipes shall be approved for the use proposed and shall be of such shape and capacity as to prevent splashing or flooding and shall be located where they are readily accessible for inspection and cleaning. No standpipe receptor for a clothes washer shall extend
