Simmons 1" Check Valve - 503SB CentriPro Quick Disconnect Control Boxes It maintains the correct ratio

It maintains the correct ratio of air and water in the tank by automatically bleeding off air through an adjustable pressure relief valve until the water level raises the float

Model: 231INSIDER-P

UL Listed for US and Canada

thereby reducing the possibility of false or nuisance tripping

PVC housing for use in sewage and water up to 140 degrees F

Simmons 1" Check Valve - 503SB CentriPro Quick Disconnect Control Boxes It maintains the correct ratioSimmons 1 Check Valve 503SB Certified Lead Free* Manufacturer: Simmons Model: 503SB Inlet Outlet: 1 Features: Silicon bronze cast body Silicon bronze cast poppet Female Threads All check valves furnished with Buna N O Ring, stainless steel spring, stainless steel washer and stainless steel locknut. All valves 3 4 through 1 1 2 have a working pressure of 400 psi. * Silicon bronze components contain less than . 05% (1 20 of 1%) Lead