Coliter ® Horizontal Check Valve, 1.6MPa, -20–120°C, Lead-Free Brass, BSP Threaded
ZH1001 Horizontal Check Valve – Spring-Assisted Silent Brass Check Valve for Potable Water and Heating Systems
The Coliter® ZH1001 Horizontal Check Valve is a compact, spring-loaded brass check valve designed to prevent backflow in horizontal piping installations for potable water, heating, and light industrial systems. Featuring silent closure technology, it eliminates water hammer by ensuring smooth, rapid shut-off when flow reverses. Constructed from lead-free brass with a PTFE-sealed disc, it offers excellent corrosion resistance and long-term reliability. Rated for a nominal pressure of 1.6 MPa and operating temperatures from -20°C to 120°C, it complies with GB/T 17241 standards. Threaded ends conform to ISO 228 (BSP parallel), available in sizes DN15 (G1/2") through DN50 (G2"). Ideal for residential risers, pump outlets, and municipal water networks—ensuring maintenance-free, automatic backflow protection.
Installation diagram
Product Description
| DN | G | D | L | H |
| 15 | 1/2" | 12.5 | 47 | 33 |
| 20 | 3/4" | 17 | 50 | 34 |
| 25 | 1" | 22 | 62 | 43.5 |
| 32 | 1¼ | 28 | 70 | 51 |
| 40 | 1½ | 34 | 80 | 57 |
| 50 | 2" | 43 | 91 | 65.5 |
Technical Specifications
Nominal Pressure: 1.6 MPa
Working Medium: Water
Working Temperature: -20℃ ≤ t ≤ 120℃
Pipe Threads: ISO 228
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Faq - Frequent questions
Introduction to Check Valve
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.
