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Continuous-Blowdown Block Valve Reduces Startup Time

At Essential Power LLC’s Newington Energy Facility, the high-pressure (HP) steam-drum continuous blowdown system was designed to cascade flow to the intermediate-pressure (IP) steam drum. While the valve worked well for controlling flow, it did not have the degree of leak-tightness required for stopping flow from the drum during typical overnight shutdowns. An automatic full-port ball valve was installed upstream from the existing automatic control valve to eliminate the risk of flashing.

Revision Date:  5/28/2015

Tags:  221112 - Fossil Fuel 化石燃料, Valve, Leakage, Combined Cycle Journal, USA

Eliminate Leakage by Drain, Vent, Block Valves

Select your valves carefully. Be sure metal seats are available when service temperatures are 400F and above, stems are blowout-proof, seat leakage meets the tightest specs after installation, coatings assure long life, and can be accessed internally, inline, for inspection and maintenance.

Revision Date:  5/28/2015

Tags:  221112 - Fossil Fuel 化石燃料, Valve, Leakage, Maintenance, Combined Cycle Journal