Watts® 174A Boiler Pressure Relief Valve, 3/4" SpecialDiscount and screened inlet

and screened inlet

Heavy duty aluminum & steel construction

Light Duty Safety Switch

Medium duty

Riveted at every connection

Watts® 174A Boiler Pressure Relief Valve, 3/4" SpecialDiscount and screened inletUsed in hot water heating and domestic supply boiler applications to protect against excessive pressures on all types of hot water heating supply boiler equipment. It consists of a bronze body construction with NPT threaded female inlet and NPT threaded female outlet (drain) connections, non metallic disc to metal seating, stainless steel spring, and test lever. Series 174A resists corrosive water conditions, sticking and freezing, and prevents water