NS-Series NSF certified water valves (from GC Valves) are an excellent choice for food and beverage grade potable water applications where products can be consumed by humans. Three types of 2-port, 2-position, normally closed valves are available. The NS201 and NS211 series are piloted diaphragm valves with 316L stainless steel or Noryl (thermoplastic) bodies and are ported for 3/8, 1/2 or 3/4 inch NPT. Cost-effective NS301 series valves are direct acting and a good choice for potable water applications up to 400 psi. These valves have 303 stainless steel bodies and 1/4 inch NPT ports. 24VDC, 24VDC, 120VAC and 240VAC replacement coils are available, as are valve repair kits and complete valve rebuild kits. Made in the USA, NS Series potable water valves start at $73.00 and are NSF, CE, CSA, UL recognized and NEMA 4/4X protected.