SMC (6550090) 1215 Series Brass Check Valve ; 3/4" FNPT x 3/4" FNPT BUNA 16 inch Poly Wound Pressure Vessel Flow irregularities show up immediately

Flow irregularities show up immediately on the dual scale display

Commercial RO systems using 2

and treatment systems using Autotrol valve assemblies that require 1/4" male NPT air check valve connections

Best used as a specialty stage in multi-stage filtration systems or as a standalone solution for iron staining and lead contamination

and maintain consistent performance without manual intervention

SMC (6550090) 1215 Series Brass Check Valve ; 3/4" FNPT x 3/4" FNPT BUNA 16 inch Poly Wound Pressure Vessel Flow irregularities show up immediatelySMC 6550090 1215 Series Brass Check Valve 3 4" FNPT threaded brass check valve with BUNA seal for reliable backflow prevention in residential and light commercial water systems Brass Construction 3 4" FNPT BUNA Seal WHY IT WORKS Prevents Backflow and Protects Equipment One Way Flow Control Spring loaded mechanism ensures water flows in only one direction, protecting pumps, tanks, and filtration equipment from reverse flow damage Brass Body