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IMI Thompson Valves
E71B Type 271 - Bellows Sealed Needle Valve
Bellows-sealed high-pressure needle valve for nuclear and aerospace applications.
Bellows-sealed design prevents leakage and ensures containment.
Handles extreme pressures and temperatures for hazardous fluids.
Graphite secondary packing enhances leak-tight sealing.
Features
The IMI Thompson Valves E71B Series is a bellows-sealed high-pressure needle valve engineered for nuclear power, aerospace, and hazardous fluid applications. Operating at up to 414 bar (6003 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, and an outside screw and yoke assembly isolates actuating threads from excessive heat. Available in threaded, butt weld, socket weld, and stub pipe connections, the E71B Series meets ASME B&PV Section III standards and is ideal for instrumentation and process applications in nuclear power generation.
Key features
414 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)
414
Material
SS 316L
SA182-F316L
Z2CND17.12
Design Codes
ASME Sec. III
Temperature Limits (°C)
0 to 350
