Feedwater Control Valve

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.

Feedwater control valve.

The valve s requirements are high. Surge tank make up water valve. In some cases use of the startup valve may not be required if the rangeability of the main feed water control valves is adequate. The following valves can be maintained.

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 valve supplied as either a straight pattern body or angle pattern body suitable for use in industrial applications. Feedwater control valves regulate the feedwater flow to the steam generator. Because there may be several different types the concepts are also different.

They come in all types from ball valves to knife gates to globe valves and operate. Chemical feed pump valve. Da psi control valve. A main feed water control valve is designed.

Full load control valves are installed in the main feedwater line. The valve controls the supply of feed water to the boiler. Off of many types of signals. The feedwater center controls a number of valves in order to maintain levels pressures flow rates within the system.

To protect against this the feedwater valves are sized for minimal pressure. Modulating feedwater valves allow for constant incremental adjustments to feed water into your boiler. The pressure drop across the valve should be minimized but still give a l good control characteristic. Feedwater control valves play a critical role in boiler operation.

Some typical applications are 0 135 ohm slide wires from a mcdonnell and miller 7b switch or a 4 20ma signal from a. One important parameter of their design is the pressure drop at the rated condition as well as off design conditions. A properly designed feedwater control valve with high rangeability allows for a better overlap between the startup valve and the main feed water control valves during transitions between the two valves. Customer oriented solutions at the highest levels of technology and competence 2 control valves in 1.

Boiler feedwater the mark 33 is a motor operated valve featuring the jordan sliding gate seat and heavy duty industrial motors for proportional resistance on off 4 20 ma electronic control. Steam conditioning valves prds turbine bypass valves.