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The ARC valve provides protection for centrifugal pumps during low flow conditions. It recirculates a minimum flow requirement automatically to the deaerator to prevent the pump from overheating and causing internal damage. Pump manufacturers will dictate a pump's minimum flow requirement. The ARC valve will be designed to flow normal capacities through the main valve and also size the bypass to handle the minimum flow. Additionally, the flow sensing element, a disc, also acts as a check valve to prevent reverse flow to the pump.
What else can I help you with?
Why is used the balancing line in boiler feed pump and its direction of flow?
In boiler feed pumps usually the discharge pressure is 20 to 30 times tie suction Pressure so to protect the pump balancing line is given from discharge to suction.
What is the function of back pressure valve in Boiler feed pump?
The function of back pressure valve is to prevent back flow to the pump in case there is an obstruction on downstream side of valve.
What is the difference between boiler and reboiler?
In boiler the feed is only liquid but in reboiler the feed may be any liquid. second is that, reboiler do partial vapourization but the boiler does complete vapourization
What is TDBFP?
TDBFP = Turbine Driven Boiler Feed Pump
Why used thrust bearing in boiler feed pump?
Thrust bearings are used in boiler feed pumps to accommodate axial loads generated by the pump's operation, particularly during startup and shutdown. They help maintain the alignment of the rotating shaft, reducing wear and preventing damage to the pump components. Additionally, thrust bearings ensure smooth operation, enhance reliability, and extend the service life of the pump by minimizing friction and heat generation.
What is boiler feed water pump?
Boiler feed pumps are an important part of any boiler operation. They control the amount of water fed to the boiler and the manner in which it is fed.
What is the feed check valve of boiler?
The feed check valve of a boiler is on the line coming out of the boiler it is usually to prevent the water from going back in to the boiler its coming out of so it would build up excessive amounts of pressure which will cause the t&p valve to blow temperature and pressure
In boiler feed water line whether a non return valve should precede or succeed the delivery valve of feed water pump?
In boiler feed water line the NRV is normally installed between Pump and stop valve if the line is short and an another NRV is installed at boiler entrance and after stop valve if the line is long or pump is 10 to 15 m away from the boiler.
What is the use of boilerfeed pump?
The boiler feed pump pumps hot feedwater into the boiler. The boiler pressure is to high for water to flow into it by gravity, so a pump is required.
What is NAS value of lube oil and the basics for determination required NAS value of lube oil for Boiler feed pumps?
Well, it depends on the lube oil you use. The basics for determination is usually common sense, to be honest. It will also depend on how big the boiler feed pumps are too.
Why is used the balancing line in boiler feed pump and its direction of flow?
In boiler feed pumps usually the discharge pressure is 20 to 30 times tie suction Pressure so to protect the pump balancing line is given from discharge to suction.
What is the function of back pressure valve in Boiler feed pump?
The function of back pressure valve is to prevent back flow to the pump in case there is an obstruction on downstream side of valve.
How boiler feed valve works?
There are automatic boiler feeder and manual feeds and depending on the desired working pressure required that would determine the "SET" pressure of the feeder
What you will do if both feed pumps tripped when boiler is in service?
Immediately the load on Generator should be reduced to Zero n desynchronised, and the turbine be tripped.
What is boiler feed water?
Boiler feed is the fresh or treated water to replenish the water loss though evaporation or leak
What is the difference between boiler and reboiler?
In boiler the feed is only liquid but in reboiler the feed may be any liquid. second is that, reboiler do partial vapourization but the boiler does complete vapourization
What is Boiler feed pump?
Function - It adds the pressure to the feed water before it entyers into boiler feed pump suction Advantage - Ensures high margin NPSH A for boiler feed pump spinning at high rpm (5250Rpm) Drive for booster - Normally @1450 rpm Type of impeller- Mostly preferred Double suction
