Coliter®’s cast steel gate valves, including the Z40H (non-rising stem) and Z41H (rising stem) models, are designed for high-pressure, high-temperature applications in oil & gas, power generation, chemical processing, and district heating systems. Constructed from WCB (A216) cast steel with a bolted bonnet design, these valves feature a metal-seated wedge disc for reliable shut-off under severe service conditions. Rated at PN16 to PN40 (1.6–4.0 MPa) and suitable for temperatures up to 425°C, they comply with API 600, GB/T 12234, and ASME B16.10 standards. Full-port flow, fire-safe design, and robust construction ensure long-term performance in critical industrial pipelines.
