GMK Hastelloy Butterfly Valve

Triple offset and high-performance butterfly valves made of Hastelloy are available at GMK. To create the Hastelloy high-performance butterfly valve, engineers took the best features from existing butterfly valves and combined them into a single innovative design. This butterfly valve has great cutting-off performance and durability because the sealing surface of the plate is a spherical arc body, and the sealing mechanism achieves a real dynamic seal through the pressure of the system. Because of its compact form factor, low mass, versatile production, and low maintenance and repair requirements. Metal-to-metal seals are used in Hastelloy triple offset butterfly valves, and the valve’s unique sealing technology guarantees excellent sealing performance from cryogenic to superheated temperatures.

  • Size:DN65-2000mm, NPS2-1/2″-40″
  • Body material:Hastelloy B(N-12MV,N-7M), Hastelloy C(CW-12MW), Hastelloy C276(CW-6MC), Hastelloy C4, Hastelloy G30
  • Seat material:EPDM, NBR
  • Pressure:PN0.6-PN4.0
  • Temperature:-29℃-+280℃

CE Certification

ISO Standards

Warranty Included



Benefits offered by Hastelloy butterfly valve are as follows:

  • In the field of large port warp regulation, the Hastelloy butterfly valve offers a low flow resistance at full opening and sensitive flow control between about 15 degrees and 70 degrees. The butterfly valve already dominates the market and will continue to do so in the future.
  • Hastelloy butterfly valves have plate movement with wiping, making them suitable for media with suspended solid particles; depending on the strength of the seal, they may also be suitable for powder and granular media.
  • The reduced opening resistance is a result of the valve’s three-dimensional eccentric sealing system’s optimal design.
  • Its sealing surface is a conical form that is elevated vertically, and when opened, the points on its circumferential surface finish off the sealing ring simultaneously so that solids don’t gather there.
  • The elastic pressure of the seal ring closes the valve, and there is no phase jam between the seal on the valve body and the seal on the butterfly plate.
  • The valve’s ability to seal does not alter as a result of temperature variations.


  • Set and maintance convenient, it doesn’t need to remove axle and disc
  • Adjustable seal ring
  • No friction during open and close,extend valve service life,reduce user cost
  • Resilient seated ensure long & reliable sealing function, it can achieve zero leakage
  • SS+flexible graphite seal ring is able to bear for high temperature ,production fire
  • Small operation torque,more humanized product design
  • This kind butterfly valve not only can be used for cut-off device,but also regulator flow



Size DN65-2000mm, NPS2-1/2″-40″
Body material Hastelloy B(N-12MV,N-7M), Hastelloy C(CW-12MW), Hastelloy C276(CW-6MC), Hastelloy C4, Hastelloy G30
Seat material EPDM, NBR
Pressure PN0.6-PN4.0
Temperature -29℃-+280℃
Driving manner Hand-operated, worm wheel and worm screw, pneumatically operated, electric-driven
Supply ability 10000 piece/pieces per month
Port Wenzhou/shanghai
Payment terms L/C, D/A, D/P, T/T
Delivery time 7-10 Working day
  • Design standard: API 609
  • Face to face: API 609, ASME B 16.10
  • Flange ends: ASME B 16.5, ASME B 16.47
  • Test and inspection: API 6D
Can we order goods from you directly?
Yes, we look forward to receiving your order. However, please note our minimum purchase quantity. If you require smaller quantities we will be happy to arrange an individual delivery. We would be delighted to assist you.
Can I get a discount?
This depends on the specific situation, you can call directly to consult.