SMC (6850490) 685 Hastelloy Poly Check Valve 1/2" NPT Autotrol (1030358) 8 GPM External Drain Flow Control Filter Protection

Filter Protection

Installing Your Pentek Valve-In-Head Housing

same proven membrane technology

High bicarbonate levels reduce capacity significantly

When to replace these components

SMC (6850490) 685 Hastelloy Poly Check Valve 1/2" NPT Autotrol (1030358) 8 GPM External Drain Flow Control Filter ProtectionSMC Professional Grade SMC 685 Hastelloy Poly Check Valve 1 2" NPT Polypropylene inline check valve with Viton seals and Hastelloy springs for reliable backflow prevention in demanding water treatment applications Model 6850490 125 PSI WOG Chemical Resistant WHY IT WORKS Built for Corrosive Environments Hastelloy Spring Corrosion resistant Hastelloy spring maintains consistent closing force even in aggressive chemical environments where standard