Steam gate valves are specifically designed for high-temperature and high-pressure steam service. They feature extended bonnets to protect the stem packing, high-temperature graphite seals, and flexible wedge or disc designs that accommodate thermal expansion without binding. Standard gate valves may leak or seize in cyclic steam service above 200°C.

Saturated steam at 180°C corresponds to approximately 10 bar (150 psi). A Class 150 steam gate valve is typically sufficient, but we always recommend checking the maximum allowable pressure at temperature per ASME B16.34. If your system experiences surges or water hammer, consider Class 300 for an added safety margin.

Yes. We offer double-acting and spring-return pneumatic actuators with positioners, solenoid valves, and limit switches. Our engineering team can size the actuator to the valve's torque requirements and your available air supply. Just provide your line pressure, steam temperature, and desired fail-safe position.

For standard sizes (DN50–DN300, Class 150/300), our lead time is 25–35 working days from order confirmation. For urgent orders, we can ship within 15 days from our buffer stock in Tianjin. Door-to-door delivery to a US port (CIF) takes approximately 25–30 days by sea. Air freight can be arranged within 5–7 days.

Yes. Every steam gate valve we ship includes a 3.1 material test report (EN 10204) and a hydrostatic test certificate. We also offer third-party inspection by SGS, BV, or Lloyd's at an additional cost if required by your project specification.

The general rule is to match the valve size to the pipe nominal diameter. However, for steam isolation, we recommend a valve that matches the line size to avoid unnecessary pressure drop. If you need to reduce flow, a reduced-bore valve can be used, but we advise consulting our engineering team for specific pressure and temperature conditions.

For first-time orders, we typically require 30% advance payment by T/T (bank wire) and 70% balance against a scanned copy of the shipping documents. For repeat customers with a history of on-time payment, we can discuss L/C at sight or open account terms. We also accept payment via credit card for sample orders up to $5,000.