The 491 Series Anti-Siphon Wall Hydrant was added to PRIER's offering with our 2007 purchase of Mansfield’s Brass Division.
The 491 Series, also available in Lead Free, is similar to Mansfield’s original patented vacuum breaker design, now manufactured by PRIER in our Kansas City area plant. The 491 Series provides year-round water to areas of structures that are prone to freezing, with the added protection of an anti-siphon device and backflow preventor. The hydrant valve is connected to the supply piping in the heated portion of the structure, eliminating the possibility of freezing. The valve is approved to ASSE, IAPMO and CSA standards.
The 491 Series is a “smart-turn” design, 180 degree opening and closing, for easy operation and flow control.
The Mansfield 491 Series is available in sizes from 4” to 14”, in 2” increments.
ASSE 1019 and C-UPC approved
Easy half-turn operation
Integral cast backflange
Wide screw holes easily secure mounting screws
Aluminum vacuum breaker cap with increased durability
Solid brass body and seat
Satin nickel plated body maintains attractive finish
Stainless steel handle screw
Easy grip polycarbonate operating handle
Durable ACME threads secure stem at seat end
Solid stem design with EPDM backflow preventor
AFG teflon with graphite packing for easy maintenance
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