Coliter® supplies a complete range of check valves to prevent backflow in potable water, heating, and industrial systems. The series includes the ZH1001 horizontal brass check valve, ZH2001 vertical brass check valve, ZH3001 telescopic meter inlet check valve (with compression fitting for easy water meter installation), and ZH5001 flanged cast iron check valve for larger pipelines. All models feature spring-assisted silent closure to eliminate water hammer, lead-free brass or epoxy-coated cast iron bodies, and compliance with GB/T 17241 standards. Rated up to PN16 (1.6 MPa) and suitable for temperatures up to 120°C. Ideal for residential risers, pump outlets, and municipal water networks—ensuring reliable, maintenance-free backflow protection.
