Butterfly Valves

Valmark has an extensive experience in supplying of Butterfly valves for the hydrocarbon, energy and process industries.

Size:
2” up to 88“ (DN 50 up to DN 2200)

Pressure Rating:
ASME 150# to 900#

Materials:
Carbon Steels, Low Temperature Carbon Steel, Martensitic Steels, Austenitic Stainless Steel, Duplex Stainless Steels, Super Duplex Stainless Steels, Nickel Alloys, Nickel Aluminum Bronze, Hastelloy, Inconnel, Titanium Alloy & Carbon Steel with Internal Corrosion Resistant Alloy (CRA) Overlay

Design Standard:
API 609 MESC SPE 77 / 134, BS 5353 BSEN593, ANSI AWWA C504-94

Pressure / Temperature Rating:
ASME B 16.34

Test (Inspection) Standard:
API 598, API 6D, MESC 77/134, ISO 5208

Operation:
Lever, Gear, Actuator (Pneumatic, Hydraulic, Electro-Hydraulic and Electric Motorised)

Butterfly Valves are available in four different types’ versions :

• Double Offset
• Triple Offset
• Centre Disc
• Extended Stem

Cryogenic Service
Almost all Butterfly Valve can be designed in a special version suitable for cryogenic service. In this case, all the materials and technical features are designed to withstand minimum design temperature required by the Customer. If required by the customer, specific Cryogenic Tests are performed to verify the behaviour of valves sealing capability, emissions vs the ambient.