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IMI Thompson Valves
E70B Type 171 Mk2 - Bellows Sealed Needle Valve
Bellows-sealed high-pressure needle valve for nuclear and aerospace applications.
Bellows-sealed design prevents leaks and ensures containment.
Handles extreme pressures and hazardous fluids in critical sectors.
Graphite or PTFE packing ensures long-lasting leak-tight sealing.
Features
The IMI Thompson Valves E70B 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 300°C (572°F), it ensures positive shut-off with a non-rotating valve disc. The graphite or PTFE gland packing provides leak-tight sealing for hazardous fluids, including steam, helium, and boric acid. Compliant with ASME B&PV Section III standards, it is available in threaded, butt weld, socket weld, and stub pipe configurations, making it a versatile choice for demanding industrial environments.
Key features
250 bar rating
300°C max temp
Bellows-sealed design
Graphite/PTFE 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
Design Codes
ASME Sec. III
Temperature Limits (°C)
0 to 300
