High performance steam safety valve is suitable for steam overpressure protection of power boiler, direct boiler, reheater and other equipment and pipelines. Designed and manufactured in accordance with ASME I.

Specification 1-1 / 2 "x2" ~ 8 "X10"

Pressure class 150-2500, pn16-pn420

Throat diameter f ~ t (1.98 ~ 167.7cm)

Temperature range - 29 ° C to 538 ° C

Set pressure 207barg

Standard ASME I

Performance

In accordance with ASME Boiler and pressure vessel code, section I, power boilers

Set pressure deviation △ PS ≤± 1% PS (PS ＞ 6.89mpa)

Over pressure △ Po ≤ 3% PS

Opening and closing pressure difference △ PB1 ≤ 4% PS

Characteristic

The structure design of the pressure regulating system is adopted, and the back pressure of the back seat is provided by the steam at the inlet of the safety valve, which can be adjusted to ensure that the opening and closing pressure difference △ PB1 ≤ 4% PS.

The valve seat is welded with the valve body as a whole to ensure reliable connection under high temperature and high pressure.

The inlet and outlet connections are of flange structure, which is convenient for loading, unloading and maintenance of safety valve.

The guide is good for neutral, which ensures the safety valve to operate flexibly and reliably.

All materials can be used normally under full high temperature.

The sealing surfaces of valve disc and valve seat are overlaid with cemented carbide and ground with high precision.

The high-performance spring is tested under simulated working conditions to ensure its normal use under high temperature and high pressure.