If you do provide a vent, how do you size it? If a grease interceptor needs to be installed, replaced or fixtures need to be connected, call a plumber or other service provider. A vent shall be installed downstream of hydromechanical grease interceptors in accordance with the requirements of this code. L/m, 1 pound = 0.454 kg. Grease Interceptor are manufactured with patented distributed flow pattern and corrosion resistant fiberglass material capturing FOG before it clogs pipes, enters the sewer waste system, or spoils a successful operation. "F$H:R!zFQd?r9\A&GrQhE]a4zBgE#H *B=0HIpp0MxJ$D1D, VKYdE"EI2EBGt4MzNr!YK ?%_&#(0J:EAiQ(()WT6U@P+!~mDe!hh/']B/?a0nhF!X8kc&5S6lIa2cKMA!E#dV(kel }}Cq9 Or do you size it based on the number of fixture units connected upstream? 1071 0 obj <>/Filter/FlateDecode/ID[<27EA446AC697844CAE5240B4F0D8AD98>]/Index[1046 48]/Info 1045 0 R/Length 122/Prev 312685/Root 1047 0 R/Size 1094/Type/XRef/W[1 3 1]>>stream . 1003.9 Venting of interceptors and separators. As the waste stream flows through the orifice in the flow control device negative pressure is created, drawing in air from the air intake which is intended to mix with the waste water as it enters the grease interceptor aiding in separation efficiency. If your grease interceptor is undersized, you may be required to clean it out more often until you install a properly sized unit. H0FVy&K7FL+dR5e However, these requirements also allow larger HGI models if site conditions are not ideal for a Gravity Grease Interceptor. To separate them from water an interceptor provides a separation chamber which allows FOG to rise to the surface. . Manufacturer's are required to identify which Type their interceptor is rated to when certifying to the ASME standard. 0 This is fine if the waste hauler has a means of access to the unit with their vacuum hose, but often they are mistakenly buried in the parking garage where no such access exists, and a grease truck is much too tall to drive into a parking garage with 8'-4'' ADA clearance. ASME A112.14.3 allows four types of ratings as follows: Type A - units with external flow control, with air intake (vent): directly connected, Type B - units with external flow control, without air intake (vent): directly connected, Type C - units without an external flow control: directly connected, Type D - units without an external flow control: indirectly connected. Grease Interceptors may be sized in accordance with Appendix H of the 2003 Uniform Plumbing Code (UPC) or Chapter 10 of the 2006 and 2009 . Must comply with American Society of Civil Engineers (ASME) A112.14.3 standard; Must be flow-rated at 75-gallons per minute (GPM) or higher; Must be constructed of non-corrodiblematerials; Must be installed per ASME A112.14.3 Type D standard (indirect connection without external flow control); Must have a minimum liquid capacity consistent with the IW approval letter specified minimum; and. V)gB0iW8#8w8_QQj@&A)/g>'K t;\ $FZUn(4T%)0C&Zi8bxEB;PAom?W= If you would like Metro Vancouver to review your grease interceptor installation plan, replacement plan, or fixture connection plan, please fill out this form: If the grease interceptor contained greater than 25% fats, oils, grease, and solids, you must have it pumped out and cleaned immediately, then provide us with the documentation from your service provider. 1nrkt`N=e _phk$k0Ja+JPGcG6J E $9 !'3e`AsXBDttxapi C"$> iF`L_i6c8rf`b0 ,_t Does the interceptor require a vent? For compliance with the UPC this drawing would have to show both a vented external flow control and a trap and vent for the fixture.
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