What is the use of a feedwater valve?
Feed water control valves are one of the most important control components of the water-steam circuit. The valve controls the supply of feed water to the boiler. The valve’s requirements are high. The pressure drop across the valve should be minimized, but still give a l good control characteristic.
What is feedwater regulator?
Boiler feed water pressure regulators are designed for use in commercial and residential hydronic heating systems to fill the boiler and piping system with water and maintain continuous pressure.
What is an industrial control valve?
Control valves, also known as control nozzles, are essential products used in many industries. Control valves are used to control operating conditions such as flow, temperature, pressure, and liquid levels. They accomplish this by opening the valves partially, or completely after receiving signals from controllers.
What is control valve in boiler?
Tasks. Discharge control valves are used to discharge (boiling) water from the boiler drum during start-up or low-load operation. On Benson boilers, the valve is used as a start-up valve to ensure the (boiling) water level in the start-up drum remains constant.
What is the function of blowdown valve?
Blowdown valves are commonly used to control the concentration of dissolved solids in the boiler water. The valves are designed and manufactured according to the requirements of the boiler and the industrial application.
What is stay tube in boiler?
: a fire tube with flared or threaded thickened ends that project through both tube sheets in a steam boiler so as to form stays.
What is the automatic feed water regulator in boiler?
Automatic feed water regulating apparatus for steam boilers comprising, a ring-shaped tube, a container surrounding a portion of the ringshaped tube and receiving water and steam from the boiler, an evaporable liquid within said ringshaped tube adapted to be heated by the boiler water and the boiler steam present in …
How are control valves controlled?
Control valves automatically regulate pressure and/or flow rate, and are available for any pressure. The valve modulates flow through movement of a valve plug in relation to the port(s) located within the valve body. The valve plug is attached to a valve stem, which, in turn, is connected to the actuator.
How does a boiler flow control valve work?
The flow-control valve is intended to prevent hot water from circulating up through a heating zone by natural convection – as will occur even if a circulator is “off” unless we have a type of check valve to prevent it.
What type of valve is a blowdown valve?
Continuous Blowdown (CBD) valves Continuous Blowdown Valve is an angle type valve with a needle shaped trim in a venturi diffuser. The venturi diffuser provides sufficient area for the high velocity flashing water, thereby avoiding choked flow.
What does a boiler flow control valve do?
The flow control valve on a boiler regulates the flow of hot water to the system. It is part of the hot water supply side of the boiler and one of the major components of a hot water boiler.
What is a water control valve?
A water control valve regulates the amount of water distributed by a certain water line or outlet valve. The flow of water must be adjusted so that a specific amount of pressure is maintained at the outlet for many manufacturing needs. The water control valve is variable from off to full on and any fraction in between.
What is a feeder valve?
The Clean-in-place rotary feeder is a special purpose valve designed for where cross-contamination is a major concern and lengthy shut-downs for clean-out are cost-prohibitive, suited for Dairy, Pharmaceutical industries , Food, Baking, Chemical, Plastics, Paint, and Powder Coating plants.
What is a boiler feeder?
A boiler feed pump ensures continuous supply of feed water to the boiler, preventing overheating and damage to the boiler. The boiler feed pump is an essential part of the boiler feed system. The article explains the construction and working of a boiler feed pump.