The Clampseal® design is uniquely suited to a number of special applications where service demands require rugged construction while retaining easy in-line serviceability. No other forged valve offers this variety of applications.
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Tandem Blowdown Globe Valve

Tandem Blowdown Globe Valve
Cryogenic Service Globe Valve

Cryogenic Service Globe Valve
Fire-Safe Service Globe Valve

Fire-Safe Service Globe Valve
Three-Way Service Globe Valve

Three-Way Service Globe Valve
Naval Boiler Blowdown Globe Valve

Naval Boiler Blowdown Globe Valve
Description N/A Traditional bottom blowdown service requires a tandem valve. Unlike older massive designs with limited serviceability, the Clampseal® unit tandem valve offers compactness, lighter weight and easy maintainability as well as longevity of service. N/A High pressure cryogenic service demands special attention to design and quality of material and fabrication. The Clampseal® delivers tight shutoff and operability through a wide temperature range and meets ANSI B 31.3 requirements. N/A Fire-safe service is ideal for refining and chemical plants where fire safety is a major concern. Clampseal® globe valves may be retrofitted with this fire-safe capability, which meets API Standard 6FA. N/A Conval has responded to the need for a high pressure, high temperature 3-way valve with easy serviceability for both seats. Excellent service history and versatility make the Clampseal® valve the choice for 3-way service. N/A The Clampseal® Naval Boiler Blowdown valve meets the requirements of MIL-V-17737 and other applicable specifications.
Brands N/A Conval
Size N/A 1 to 2 1/2 in N/A 1/2 to 4 in N/A 1/2 to 4 in N/A 1 1/2 to 3 in N/A 1 1/2 in
Type N/A N/A N/A N/A N/A I (Handwheel) II (T-handle)
Pressure Class N/A N/A N/A N/A N/A 1 to 600 2 to 1500
American Society of Mechanical Engineers (ASME) Class Pressure Rating N/A 4500 N/A 1500 2500 N/A 900 to 2500 N/A 2500 N/A
American National Standards Institute (ANSI) Class Pressure Rating N/A N/A N/A 900 to 2500 N/A N/A
Temperature N/A N/A Up to -320 ºF N/A Up to 1800 ºF N/A N/A
End N/A Butt Weld Clamp Connector Socket Weld N/A N/A N/A Butt Weld Clamp Connector Flanged Socket Weld N/A
Style N/A N/A N/A N/A N/A Angle Straightaway (Y)
Material N/A SA 105 SA 182-F22 N/A SA 182-316 N/A A105 F22 F316 F347 F91 Inconel™ Monel™ N/A Carbon Steel - (WCB) Low Alloy - (WC9) Stainless - (CF8M) N/A Alloy Steel Carbon Steel
Note for Material N/A
Example N/A 1.00-12B8HJ-105 N/A 1.00-12J2J-316 N/A 1.50-13C8J-A105 N/A 1.50-13Z4J-316 N/A 1.50-12G8CJ-N05
National Stock Number (NSN) N/A N/A N/A N/A N/A 4820-01-018-3780 4820-01-018-3781 4820-01-124-3694 4820-01-140-4834
Options N/A