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 Nylon 6 (thermoplastic) bodies and are ported for 3/8, 1/2, 3/4, 1, 1-1/4, 1-1/2 or 2-inch NPT. Cost-effective NS301 series valves are direct acting and a good choice for potable water applications up to 400 psi. NS301 valves have 303 stainless steel bodies and 1/4 -inch NPT ports. 24VDC, 24VDC, 120VAC and 240VAC replacement coils and valve repair kits are available. 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.