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IMI Thompson Valves
E72B Type 172 - Bellows Sealed Needle Valve
Bellows-sealed high-pressure needle valve for nuclear and aerospace applications.
Bellows-sealed design ensures zero leakage and pressure containment.
Handles extreme pressures and hazardous fluids in critical sectors.
Graphite secondary packing enhances leak-tight sealing.
Features
The IMI Thompson Valves E72B Series is a bellows-sealed high-pressure needle valve designed for nuclear power, aerospace, and hazardous fluid applications. Operating at up to 250 bar (3625 psi) and 350°C (662°F), it ensures positive shut-off with a non-rotating valve disc. A graphite secondary packing provides leak-tight sealing, while an outside screw and yoke assembly isolates actuating threads from excessive heat. Available in threaded, butt weld, socket weld, and stub pipe connections, the E72B Series meets ASME B&PV Section III standards and is ideal for instrumentation and process applications in nuclear power generation.
Key features
250 bar rating
350°C max temp
Bellows-sealed design
Graphite secondary packing
Hazardous fluid handling
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 0.5
Maximum Working Pressure (barg)
250
Material
SS 316L
SA182-F316L
Z2CND17.12
BS EN 10088 1.4404
Design Codes
ASME Sec. III
Temperature Limits (°C)
0 to 350
