AWWA C517-16 pdf download.Resilient- Seated Cast-Iron Eccentric Plug Valves
Documented research has shown that pipe materials (such as polyethylene and polyvinyl chloride) and elastomers, such as those used in jointing gaskets and pack- ing glands, are subject to permeation by low-molcular weight organic solvents or petroleum products. If a potable water, wastewater, or reclaimed water pipe must pass through such a contaminated area or an area subject to contamination, con- sult with the manufacturer regarding permeation of pipe walls, jointing material, and so on before selecting materials for use in that area.
Sec. 4.2 Data to Be Provided by the Manufacturer or Supplier
The manufacturer or supplier shall submit, when required in the purchase documents, certified drawings showing the principal dimensions, construction, and materials used for parts of the valve and actuator. Work shall be performed and valves shall be provided in accordance with the certified drawings.
4.3.3.3.1.2 Resilient-seat compounds shall be capable of withstanding an ozone resistance test when tested in accordance with ASTM D1149. The tests shall be conducted on unstressed samples for 70 hours at 104°F (40°C) with an ozone concentration of 500 ppb without visible cracking in the surfaces of the test
4.3.3.4 Body seat. Body seat materials shall be nickel alloys utilizing a weld material that meets ASTM A240 with a minimum nickel content of 95 per- cent, type 316 stainless steel, or of a material with equal or better wear and corro- sion resistance in water, wastewater, and reclaimed water applications.
4.3.3.5 Gaskets. Gasket material shall be made of inorganic mineral fiber, rubber or elastomer composition, or paper that is free from corrosive ingredi- ents and asbestos. O-rings or other suitable elastomeric seals may be used.
4.3.3.6 Shaft bearings and thrust bearings. Materials shall be stainless steel, oil-impregnated bronze, fAuoropolymer, or nylon 11.
4.3.4 Tests. Whenever valve components are to be made in conformance with ASTM or other standards that include test requirements or testing procedures, such requirements or procedures shall be met by the valve manufacturer. The records of such tests shall be delivered when required in the purchase documents.AWWA C517-16 pdf download.