Valve Model	Model Series	ANSI Standard	Factory Location	Certified Materials	File Number
Model WTR	C, B, V and N	NSF/ANSI 61	Sugar, Grove, IL - USA	304 SS, 316 SS, UHMW-PE, EPDM Rubber, Buna-N	MH61807
Model WTW	C, B, V and N	NSF/ANSI 61	Sugar, Grove, IL - USA	304 SS, 316 SS, UHMW-PE, EPDM Rubber, Buna-N	MH61807
Model WZR	C, B, V and N	NSF/ANSI 61	Sugar, Grove, IL - USA	304 SS, 316 SS, UHMW-PE, EPDM Rubber, Buna-N	MH61807
Model WZW	C, B, V and N	NSF/ANSI 61	Sugar, Grove, IL - USA	304 SS, 316 SS, UHMW-PE, EPDM Rubber, Buna-N	MH61807


Model WTR	C, B, V and N	NSF/ANSI 372	Sugar, Grove, IL - USA	304 SS, 316 SS, UHMW-PE, EPDM Rubber, Buna-N	MH61807
Model WTW	C, B, V and N	NSF/ANSI 372	Sugar, Grove, IL - USA	304 SS, 316 SS, UHMW-PE, EPDM Rubber, Buna-N	MH61807
Model WZR	C, B, V and N	NSF/ANSI 372	Sugar, Grove, IL - USA	304 SS, 316 SS, UHMW-PE, EPDM Rubber, Buna-N	MH61807
Model WZW	C, B, V and N	NSF/ANSI 372	Sugar, Grove, IL - USA	304 SS, 316 SS, UHMW-PE, EPDM Rubber, Buna-N	MH61807


NOTES:	International Valve has obtained Underwriters Laboratories (UL) certification to NSF/ANSI 61 and NSF/ANSI 372 using the materials of construction listed in the above chart. For projects where alternative materials are specified, such as cast iron, ductile cast iron, carbon steel, or epoxy coatings consideration should be given to offering Stainless Steel material substitutions which are certified to the NSF/ANSI standards.

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