Self-Operated Pressure Control Valve needs no external energy; the medium's own energy is used as the power source. The product is suitable for no electricity and no gas occasions, it not only saves energy, but also saves wiring, piping and equipment costs. The pressure setting can be adjusted at any time during the adjustable range.

ZZHP Series Pilot-Operated Pressure Control Valve needs no external energy, the medium's own energy is used as the power source and then introduced into the pilot to control the main valve spool displacement in order to change medium flow, therefore the outlet pressure (B type) or the inlet pressure (K type) remains constant.

Parallel Gate Valve is a new type of fast shut-off valve. The valve features metal-seated seal construction, steady and reliable movement, rapid open and close action, small operating force and excellent shut-off performance, it is especially suitable for emergency shut-off and vent of gas and liquid under high temperature and high pressure as well as be used as a large diameter control valve.

Temperature and pressure reduce device is a steam thermal parameters (pressure, temperature) change device and energy saving device for cogeneration, central heating (or supply) and light industry, electric power, chemical, textile and other enterprises in thermal energy engineering. Through the device it can reduce the steam parameters to the suitable temperature and pressure according to requirements to save energy.

Temperature and pressure reduce device is a steam thermal parameters (pressure, temperature) change device and energy saving device for cogeneration, central heating (or supply) and light industry, electric power, chemical, textile and other enterprises in thermal energy engineering. Through the device it can reduce the steam parameters to the suitable temperature and pressure according to requirements to save energy.