Coking Valve Nextech® Valve - Severe service valve for

of our valves for an application-specific time period. Every MOGAS valve comes with a PERFORMANCE GUARANTEE…plus a Lifetime Warranty on materials and workmanship. This boiler feed pump recirculation isolation valve was manufactured with high pressure hub ends with clamps to enable the customer to easily remove the valve for repair. This

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Recirculation control valve replacement cuts maintenance

Common Applications. The Masoneilan LincolnLog severe service valve is configured for high-pressure liquid letdown applications with pressure drops up to 450 bar (6500 psi) where cavitation and dirty fluids are major concerns including: Pump recirculation. Feedpump start. Spray water control. Water reinjection. Separator letdown. Boiler feedwater.

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Multi-Z - Severe Service Multi Stage Valves

Boiler Feedwater Recirculation Valve – REXA, Inc. Electraulic™ Actuation

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Valve provides severe service flow control.

Severe Service Valve Problems and Their Impact on Plant Efficiency. main steam drain valves and boiler feedpump recirculation valves. In general, it includes all "high-energy dump valves", i.e. those with high energy at the inlet and dumping to atmosphere or the condenser or a drain tank, that should be shut tight during normal

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BFP Recirculation Valves - Valve engineering - Eng-Tips

The start-up valve will have much the same service conditions as the boiler feed pump recirculation valve. That is, high inlet pressure and full drop. This valve needs anti-cavitation trim and tight shut-off. Unlike the boiler feed pump recirculation valve, the feedwater start-up valve generally does not need the same amount of cavitation

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Boiler Feedwater Recirculation Valve – REXA, Inc

Therefore, the boiler feedpump recirculation valve will be in the closed position for 90% to 95% of the time in most power plants. This valve will also have the highest differential pressure across the seat of any other valve in the plant. This makes the recirculation valve one of the most severe duty valves in a generating plant.

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Control Valves for Power Plant Application Nuclear, Fossil

Jul 01, 1995 · The new design boiler feed pump recirculation valves were installed during a four-week Unit 3 scheduled outage in the Spring of 1992. At that time, the valves …

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Control Valves for Challenging Power Plant Applications

Dec 05, 2003 · Flowserve will also launch its new, severe service control valve, the Multi-Z-the ultimate boiler feed-pump recirculation control valve solution for entrained solids flow control. The Flowserve Multi-Z is designed specifically to handle high-pressure drop applications where entrained solids and cavitation are a problem.

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Severe trim damage on installed recirculation valve - IMI

Boiler Water tank to condensor Drum level control sootblower prV continuous Blowdown Boiler feedpump Min flow recirculation Hp feedwater start-Up level control Valve SD Series valves can be fitted with an extensive array of standard and high performance trims to meet most severe duty/critical service …

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P-301

Multi-Z – Severe Service Multi Stage Valves. Multi-Z boiler feed-pump, recirculation control valve handles high-pressure drop applications wher entrained solids and cavitation are a problem. Multistage trim design eliminates cavitation and provides extended trim life. Severe service is defined as applications which have excessive noise, cavitation, erosion, or high pressure drops.

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SEVERE SERVICE VALVE APPLICATION - TSI Corporation

Protection against this damage is gained by recirculating a minimum amount of flow to the pump inlet via the boiler feed pump recirculation valve. This would require the recirculation valve to experience high pressure drop, low flow and have a risk of cavitation. A plant in India was facing severe trim damage with a competitor's installed recirculation valve. Trim damage was evident within three months of operation, causing significant leakage in the valve.

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Severe Service Control Valve Solutions - Mogas

Multi-Z boiler feed-pump, recirculation control valve handles high-pressure drop applications wher entrained solids and cavitation are a problem. Multistage trim design eliminates cavitation and provides extended trim life. Severe service is defined as applications which have excessive noise, cavitation, erosion, or high pressure drops.

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Boiler Feedwater Pump Recirculation - BVT Sweden

Feb 04, 2005 · 1-our BFP recirc valves cycle almost every day. 2-Unlike most, more modern units our BFP recirc discharges straight to the condesor, NOT to a deairator. 3-Our feedpump discharge pressure when the valve opens is around 3000psig and the condensor is around 30" of vacuum. 4-OUr feedwater temp at this point is between 250-280F.

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Evaluation of Control Valve Performance - ICEWeb

The boiler feedwater recirculation valve controls bypass flow from the pump outlet back to the deaerator or LP drum. This bypass flow prevents overheating and cavitation of the pump. The valve must prevent or withstand cavitation at high pressure drops.

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03 Related Severe service valves Boiler Feedpump Recirculation Valve information