Boleimu Valves

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Spring Operated Emergency Quick Shut-off Butterfly Valve

Short Description:

  • Nominal Size: NPS 16"~NPS 64"
  • Pressure Class: ANSI Class 125-150LB
  • Operating Temperature: -10℃~+350℃
  • Design Standard: API 609, ASME B16.34
  • End Connection: Flange
  • Operation: Pneumatic Piston, Hydraulic Actuator
  • Body / Bonnet Material: WCB, CF8/CF8M, LCB/LCC, A890 4A, A890 5A, A890 6A and Monel
  • Test Standard: API 598
  • Product Detail

    Product Tags

    Product Description

    1. Spring Operated Emergency Quick Shutoff Butterfly Valve adopts double offset or triple offset structure, with spring energy storage mechanism or accumulator to achieve fast shutoff under failure condition.

    2. Pneumatic or electric actuator keeps valve fully open under normal working conditions.

    3. Mainly used as emergency shutoff valve for system protection in single-unit thermal power plants and waste heat power generation units.

    Features & Benefits

    1. Fast shutoff time up to 0.5 seconds, safe and reliable emergency shutoff.

    2. Triple offset metal seal structure, low operating torque, zero leakage sealing.

    3. Double offset soft seal optional for normal temperature media, low cost and reliable sealing.

    4. Buffer seat achieves flow resistance free under large size working conditions.

    5. Fast closing can be achieved by spring or accumulator, both modes safe and reliable.


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