SMC (5720990) 426 Series PVC NSF Check Valve ; 1/8" FPT x 1/8" FPT BUNA GE Osmonics Desal FloJet Quad Port Fittings 1/2"

FloJet Quad Port Fittings 1/2" NPT (20381-039)

and any quick-closing solenoid valves that produce water hammer

Compatible with both whole-house systems and under-sink RO pretreatment stages

💧 Hydrion pH test kits solve the accuracy problem in pure and low-ionic-strength water where electronic meters drift and paper strips give inconsistent results

See sizing chart for details

SMC (5720990) 426 Series PVC NSF Check Valve ; 1/8" FPT x 1/8" FPT BUNA GE Osmonics Desal FloJet Quad Port Fittings 1/2"The SMC 426 Series PVC Check Valve (Model 5720990) prevents backflow in water filtration systems with 1 8" female NPT connections on both inlet and outlet. NSF certified construction combines durable PVC housing with BUNA N seals for reliable one way flow control in residential and light commercial applications. SPECIFICATIONS SMC 426 Series Check Valve Core Specs Connection Type 1 8" FPT Both inlet and outlet Seal Material BUNA N Nitrile rubber seals