![Single Bypass Trapped Pressure Unloader Valve 2465 PSI, 52.8 GPM, 1" FNPT](http://siccanos.myshopify.com/cdn/shop/files/ZH1520_{width}x.jpg?v=1718995733)
Single Bypass Trapped Pressure Unloader Valve 2465 PSI, 52.8 GPM, 1" FNPT
Regular price $330.00 Sale price $99.00 Save $231.00/
This General Pump Unloader Valve (ZH1520) is a brass valve with a single bypass port and 1" female NPT ports. Designed for top reliability and easy maintenance, this industrial-grade unloader maintains consistent desired pressure level when the line is open, and goes into bypass when the line is closed. General Pump recommends using a safety relief device in conjunction with this unloader when installed on positive displacement pumps.