Coliter ® Vertical Check Valve, 1.6MPa, -20–120°C, Lead-Free Brass, BSP Threaded
ZH2001 Vertical Check Valve – Spring-Assisted Silent Brass Check Valve for Vertical Pipe Installations
The Coliter® ZH2001 Vertical Check Valve is a lead-free brass check valve specifically engineered for installation in vertical piping systems where flow moves upward. It prevents backflow in potable water, heating, and light industrial applications using a spring-assisted disc that ensures rapid, silent closure—effectively eliminating water hammer. Rated for a nominal pressure of 1.6 MPa and operating temperatures from -20°C to 120°C, it complies with the Chinese standard GB/T 17241. Threaded ends conform to ISO 228 (BSP parallel), available in sizes DN15 (G1/2") through DN50 (G2"). With its compact design, corrosion-resistant brass body, and maintenance-free operation, the ZH2001 is ideal for residential risers, pump discharge lines, and vertical sections of municipal water networks.
Installation diagram
Product Description
| DN | G | D |
| 15 | G1/2" | 45 |
| 20 | G3/4" | 51 |
| 25 | G1" | 58 |
| 32 | G1¼ | 62.5 |
| 40 | G1½ | 71 |
| 50 | G2" | 78.5 |
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.
