Conval, a global leader in high-performance valves headquartered in Connecticut, offers CLAMPSEAL® blowdown service valves to provide necessary control for continuous or tandem boiler or turbine blow down and bottom blow-off service.

The Conval CLAMPSEAL tandem blowdown valve

The Conval CLAMPSEAL tandem blowdown valve

Source: Conval

For continuous service, blowdown valves are available in ¾” through 4” sizes with butt or socket weld and flanged ends, in ASME/ANSI Class 900 through 4500. Standard materials are Low Alloy SA 182-F22, SA-182-F91 or SA-105. Specials are available upon request.

For tandem service, blowdown valves are available in ¾” through 4” sizes with butt or socket weld and flanged ends, in ASME/ANSI Class 900 through 4500. Standard materials are carbon steel A105, low alloy F22 or F91.

Clampseal blowdown valves are fully serviceable in-line using standard Conval tools. The valves feature a uniform one-piece gland, which eliminates the potential for stem damage from gland cocking. With leak-proof bonnet, the cartridge-style packing chamber allows rapid access to valve trim for inspection and maintenance. The pressure seal fixed backseat provides maximum valve integrity by ensuring a positive internal stop for the valve and stem and disc assembly. This also securely isolates the packing from line pressure when the valve is fully open, to increase packing life.