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ASME A112.18.8-2020 pdf download

ASME A112.18.8-2020 pdf download.Sanitary Waste Valves for Plumbing Drainage Systems.
1.1 Scope This Standard establishes minimum requirements for materials in the construction of a sanitary waste valve (here- inafter referred to as “the valve”) for use as an alternate to a tubular p-trap. This Standard prescribes minimum test requirements for the performance ofthe valve together with methods ofmarking and identification. This Standard does not define the requirements for products to be used in urinals or water closets. It is not intended that products meeting this Standard will be used in a urinal or water closet. The provisions ofthis Standard are notintendedto preventthe use ofanyalternate material ormethodofconstruction provided any such alternate meets the intent of this Standard. 1.2 Units of Measurement Values arestatedinU.S. Customaryunits andinthe InternationalSystemofUnits (SI). TheU.S. Customaryunits shallbe considered as the standard. InthisStandard,gallons(U.S.liquid) perminuteisabbreviatedgpm,andliters(metricliquid) perminuteisabbreviated L/min. 1.3 References The following documents form a part ofthis Standard to the extent specified herein.

Unless otherwise specified, the latest edition shall apply. ANSI/ASSE 1051-2009, Individual and Branch Type Air Admittance Valves for Plumbing Drainage Systems Publisher: American Society of Sanitary Engineering (ASSE), 901 Canterbury Road, Westlake, OH 44145 (www.asse-plumbing.org) ASME A112.18.2/CSA B125.2, Plumbing Waste Fittings ASME B1.20.1, Pipe Threads, General Purpose (Inch) Publisher: The American Society of Mechanical Engineers (ASME), Two Park Avenue, New York, NY 10016-5990 (www.asme.org) ASTM D2000, Standard Classification System for Rubber Products in Automotive Applications ASTM D2661, Standard Specification for Acrylonitrile-Butadiene-Styrene (ABS) Schedule 40 Plastic Drain, Waste, and Vent Pipe Fittings ASTM D2665, Standard Specification for Poly(Vinyl Chloride) (PVC) Plastic Drain, Waste, and Vent Pipe and Fittings ASTM F409, Standard Specification for Thermoplastic Accessible and Replaceable Plastic 2 GENERAL REQUIREMENTS 2.1 Material The valve shall meet the material requirements ofASTM F409. The valve shall be installed in an accessible location. 2.2 Seal Material Seal materials shall comply with or exceed classification M3BA507 A14 B13 C12 F17 or M2BG714 B14 EO14 EO34 of ASTM D2000. 2.3 Bladder/Checking Member Material Bladder/checking member material shall comply with or exceed classification M3FC607 EA14 EO16 G11 of ASTM D2000. 2.4 Valve Inlet 2.4.1 The valve inlets shall be 1 1 ∕ 4 in. (31.8 mm) or1 1 ∕ 2 in. (38.1 mm) nominal straightor with an 87 1 ∕ 2 -degelbowor be standard pipe size straight inlets (see Figure 2.4.1-1). 2.4.2 The base ofthe thread may be sealed by a sealing washer (inlet set) at the base ofthe thread. The useful thread length shall be between 3 ∕ 8 in. (9.5 mm) and 1 ∕ 2 in. (12.7 mm). All threaded fixture outlets shall have a minimum three- thread engagement for fittings and plastic nuts to correctly engage and energize the inlet seal in accordance with ASTM F409. 2.4.3 Ifrequired for horizontal installations, an 87 1 ∕ 2 -deg knuckle adapter shall be available to allow the valve to be connected in a horizontal position. When installed in a horizontal position, the device and connected piping shall have a minimum slope of 1:48 [i.e., 1 ∕ 4 in./ft (21 mm/m)].
3.9 Resistance to Chemicals and Solvents 3.9.1 Test Requirement. The valve shall be attached to a sink fitted with a standard crosspiece outlet. 3.9.2 Substances to Be Tested. Each testshall be carried outseparately using a quantity of 3 ∕ 4 pt[12 fl oz (0.35 L)] of one of the following solvents: (a) solvent 1: liquid drain cleaner containing sulfuric acid (b) solvent 2: mineral spirits (c) solvent 3: kerosene 3.9.3 Test Method. Pour the solventinto the sinkoutlet. After 1 min, pour 4 pt[64 fl oz (1.9 L)] ofcold water into the sink outlet to flush the solvent from the sink. Leave the system for 24 hr. 3.9.4 Performance Requirements. At the completion ofthe above test, the valve shall be tested in accordance with para. 3.2 and meet the requirements of para. 3.2.3. 3.10 Drop 3.10.1 Test Method. The test shall be conducted over a clean concrete surface. Hold the valve with the lowest point upside down 3 ft (0.91 m) above the surface and release the valve. Pick up the valve and change orientation (top upper- most) andreleaseontoconcreteagain.Pickupthevalveonefinaltimeandchangeorientation(sideways) andreleaseonto concrete. Observe the valve for any changes. 3.10.2 Performance Requirements. The valve shall show no signs of deformation or breakage that may affect its function.

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