Maxitrol R400S-3/8-CSA Regulator Els PW 17895 86" WC and remains closed

86" WC and remains closed during the heating cycle

preventing nuisance trips and ensuring reliable proof-of-closure for the control board

For technicians performing a valve teardown or routine bonnet maintenance

it is professionally recommended to stick to OEM components to ensure thermal accuracy and safety compliance

Internal Valve Depressors: Both straight fittings include depressors to allow for pressure readings without removing the core

Maxitrol R400S-3/8-CSA Regulator Els PW 17895 86" WC and remains closedThe Maxitrol R400S 3 8 CSA is a high performance gas pressure regulator engineered for precision fuel control in commercial and industrial HVACR applications. Built with a 3 8" NPT pipe size, this double diaphragm balanced valve design ensures stable outlet pressure even when upstream pressures fluctuate, preventing pilot dropouts and burner instability. The unit carries a CSA certified max inlet pressure of 1 2 PSI, though it has been Maxitrol tested