ASME A112.18.8:2020 pdf download.Sanitary Waste Valves for Plumbing Drainage Systems.
ASME A112.18.8 establishes minimum requirements for materials in the construction of a sanitary waste valve (hereinafter referred to as “the valve”) for use as an alternate to a tubular p-trap. This Standard prescribes minimum test requirements for the performance of the valve together with methods of marking 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 of this Standard are not intended to prevent the use of any alternate material or method of construction provided any such alternate meets the intent of this Standard.
1.2 Units of Measurement
Values are stated in U.S. Customary units and in the International System of Units (SI). The U.S. Customary units shall be considered as the standard.
In this Standard, gallons (U.S. liquid) per minute is abbreviated gpm, and liters (metric liquid) per minute is abbreviated L/min.
1.3 References
The following documents form a part of this 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 100 16-5990(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 Tube and Tubular Fittings Publisher: American Society for Testing and Materials (ASTM International), 100 Barr Harbor Drive, West Conshohocken, PA 19428-2959 (www.astm.org)
1.4 Definitions
bladder/checking member: the component of the sanitary waste valve that provides the sealing function.
sanitary waste valve: a product used as an alternate to a water-filled tubular waste trap that provides protection for the property from foul air in the sewer.ASME A112.18.8 pdf download.