Prier Stem Assembly - 400 Series - 10" - G Style - Lead Free - M-231-3210-LF Relay This 1 inch anti-siphon pressure

This 1 inch anti-siphon pressure vacuum breaker prevents the reverse flow of polluted water from entering into the potable water supply due to backsiphonage

5-year life

Velcro Lock - Velcro Lock is used to Seal Off Air Intrusion from the bottom opening of the bag

and lab testing

Prier Stem Assembly - 400 Series - 10" - G Style - Lead Free - M-231-3210-LF Relay This 1 inch anti-siphon pressure400 Diamond Series 10 in. Lead Free Replacement Stem for the Mansfield style wall hydrant. The overall length (OAL) of the stem is 12 7 16 in. For replacement of stem in a 10 in. 400 Diamond series only Easy repair with screwdriver Backflow preventer (BFP) included on stem Made in Kansas city, Missouri M 231 3210 LF stem assembly Mansfield style