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IMI Thompson Valves
E77D & E77H Type 174 Mk1 AO - Bellows Sealed Globe / Needle Valve
Pneumatic bellows-sealed globe valve for high-pressure and hazardous applications.
Pneumatic actuation allows remote operation in critical environments.
Bellows-sealed design prevents leaks and ensures pressure containment.
Handles hazardous fluids under high-pressure and extreme temperatures.
Features
The IMI Thompson Valves E77D/E77H Series is a pneumatically actuated, bellows-sealed globe valve designed for nuclear power, aerospace, and hazardous fluid applications. It operates at up to 210 bar (3045 psi) and 300°C (572°F), providing positive shut-off with a non-rotating valve disc. A secondary gland packing enhances sealing, while its forged stainless steel body ensures durability. The valve supports air-to-open and air-to-close actuation, making it ideal for remote operation. Available with threaded, butt weld, socket weld, and stub pipe connections, the E77D/E77H Series meets ASME B&PV Section III standards for nuclear and industrial applications.
Key features
210 bar rating
300°C max temp
Pneumatic actuation
Bellows-sealed design
Secondary gland packing
316L stainless steel
Threaded & welded ends
Specifications
Fluid Types
Water
Steam
Heavy Water
Gas
Hydrogen
Boric Acid
Corrosive Fluids (Acids & Caustics)
Liquid
Port Size (")
0.25 to 0.75
Maximum Working Pressure (barg)
210
Material
SS 316L
SA182-F316L
Z2CND17.12
Design Codes
ASME Sec. III
Temperature Limits (°C)
0 to 300
