ASME A112.14.4:2001 pdf download

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ASME A112.14.4:2001 pdf download GREASE REMOVAL DEVICES
1 GENERAL
1.1 Scope
This Standard establishes requirements for greaseinterceptors that are equipped with automatic greaseremoval devices (GRD).It includes testing requirementsand performance criteria designed to ensure confor-mance to this Standard.
Such devices are designed for the purpose of automat-ically removing free-floating grease, fats, and oils fromsanitary discharges without intervention from the userexcept for maintenance.
Semiautomatic devices are not addressed in thisStandard.
1.2 Units of Measurement
Values are stated in U.S. Customary units and theInternational System (SI) units. The U.S. Customaryunits shall be considered as the standard.
In this Standard, gallons (U.S. liquid) per minute isabbreviated gpm and liters (metric liquid) per minuteis abbreviated L/min.
1.3 Reference Standards
A product that is tested to the requirements of thisStandard shall satisfy the requirements of the followingstandards as applicable (the latest edition shall apply):ASTM A888,Hubless Cast Iron Soil Pipe and Fittingsfor Sanitary and Storm Drain, Waste, and Vent PipingApplications
Publisher: American Society for Testing and Materials(ASTM).100 Barr Harbor Drive.West Consho-hocken,PA 19428-2959.
ANSI/NFPA 70,National Electrical CodePublisher: National Fluid Power Association (NFPA)3333 N.Mayfair Road,Milwaukee,WI 53222-3219
ASME A112.14.3.Grease Interceptors
ASME B1.20.1,Pipe Threads,General Purpose (Inch)Publisher: The American Society of Mechanical Engi-neers (ASME),Three Park Avenue.New York.NY10016-5990
ANSI/UL 499,Electrically Heated AppliancesANSIUL 917,Electric Timers and SwitchesANSIUL 1004,Electric Motors
Publisher: Underwriters Laboratories.333 PfingstenRoad,Northbrook,IL 60062-2096.
1.4 Definition
automatic grease/oil removal device (GRD): a plumbing appliance that is installed in the sanitary drainagesystem in order to intercept free-floating fats, oils, andgrease from waste water discharges. Such equipmentoperates on a time- or event-controlled basis and hasthe ability to remove the entire range of commonlyavailable free-floating fats,oils,and grease automaticallywithout intervention from the user except for maintenance. The removed material is essentially water-freewhich allows for recycling of the removed product.
2 GENERAL REQUIREMENTS
21 Construction
2.1.1 Design Considerations.The GRD shallautomatically remove fats, oils, and grease from theseparation chamber to a point outside of the GRDThe removal process shall be such that the removedfats, oils, and grease shall be 95% by volume free ofwater when tested according to this Standard.
2.1.2 Size. The flow and grease retention of eachGRD shall be tested and rated in accordance withASME A112.14.3.
2.1.3 Inlet and Outlet Connections. The inletand outlet connections of the GRD shall be eitherfemale pipe thread or a plain end diameter to allowhublesscoupling connections. Tapered threads shallcomply with ASME B1.20.1.Hubless connections shallcomply with the outside dimension for the given pipesize in accordance with ASTM A888
2.2 Installation Instructions Each GRD shall be provided with complete installa- tion instructions, including but not limited to the fol- lowing: (a) Flow control and/or vent requirements (b) Separate trapping requirements

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