SMC (6550090) 1215 Series Brass Check Valve ; 3/4" FNPT x 3/4" FNPT BUNA 16 inch Poly Wound Pressure Vessel ✓ Minimal moving parts ✓

✓ Minimal moving parts ✓ Clog and airlock resistant ✓ Front-mounted head ✓ Side-mount stroke adjustment

ELF 1ML-KDF Carbon Block Filter with KDF-55 Media

Commercial RO systems using 2

5 GPM Max Pressure 125 PSIG Max Temperature 100°F Micron Rating 0

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

SMC (6550090) 1215 Series Brass Check Valve ; 3/4" FNPT x 3/4" FNPT BUNA 16 inch Poly Wound Pressure Vessel ✓ Minimal moving parts ✓SMC 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