Feedwater Control Valve

Chemical feed pump valve.

Feedwater control valve.

Steam conditioning valves prds turbine bypass valves. Some typical applications are 0 135 ohm slide wires from a mcdonnell and miller 7b switch or a 4 20ma signal from a. The feedwater center controls a number of valves in order to maintain levels pressures flow rates within the system. Feedwater control valves regulate the feedwater flow to the steam generator.

Models include the mark 33 in sizes 1 4 through 2 dn8 through dn50 the high flow mark 331 332 with cv s up to 70 60 34 kv and the mark 39 with. They come in all types from ball valves to knife gates to globe valves and operate. The valve controls the supply of feed water to the boiler. One important parameter of their design is the pressure drop at the rated condition as well as off design conditions.

The pressure drop across the valve should be minimized but still give a l good control characteristic. Feed water control valves are one of the most important control components of the water steam circuit. Modulating feedwater valves allow for constant incremental adjustments to feed water into your boiler. To protect against this the feedwater valves are sized for minimal pressure.

In some cases use of the startup valve may not be required if the rangeability of the main feed water control valves is adequate. They are designed for the full feedwater volume of the steam generator and should produce as low a pressure gradient as. Customer oriented solutions at the highest levels of technology and competence 2 control valves in 1. Full load control valves are installed in the main feedwater line.

The valve s requirements are high. Surge tank make up water valve. Feedwater control valve supplied as either a straight pattern body or angle pattern body suitable for use in industrial applications. The following valves can be maintained.

Because there may be several different types the concepts are also different. A main feed water control valve is designed. The feedwater valves are normally sized to accommodate an operating condition that occurs when the safety valves open during a unit trip. Da psi control valve.

It is critical not to allow the hrsg to dry out which can cause severe thermal damage to the boiler tubes and the drums. Feedwater control valves play a critical role in boiler operation.