Globe valve for power plant industries:-

Globe Valve

Globe valves is a widely used in high pressure steam and water line. movement of disc parallel to flow of fluid .Globe valves A conical plug moves in and out of the fluid Can be used for shutoff as well as throttling (flow restriction to cause a drop in pressure) in high pressure drop and temperature applications Available in globe, angle, and y-patterns Manual operation or else multi-turn electric actuators are most common .Easier to repair but more pressure drop than a gate or plug valve.

Parts features of Globe valves:-

Yoke: Two arms design for rigidity and accessibility

Gland bolt: Eyebolt type for easy repacking

Gland and Gland flange: Self-aligning type

Expanded Graphite Seal Ring: Excellent seal performance at low and high Pressure, even under severe pressure and temperature transients

Back Seat: In case of packing leakage, tight backseat sealing achieved with less seating force due to the differential in mating angles between the stem shoulder and the hard faced bonnet backseat.

Stem: Smooth finish ensures seal and smooth operation; upper stem threaded by machine for toughness and increased durability.

Bonnet with cooling chamber: Increases the packing life and seal ability by maintaining packing at normal temperature.

Bonnet pressure seal part: Pressure seal design incorporates a graphite seal which become tighter as the pressure increases.

Disc: Improved seal performance under the high pressure and temperature by use of a plug type disc.

Seat ring: Renewable and easy to replace seat ring are seal welded to minimize distortion from body stress.

Seat surface: Hard faced seat ensures long service life, better resistance to heat, corrosion and erosion.

Features of  globe valve :-

1. Globe valve uses body guided discs which are held concentric with body seat. Guiding is provided at full length of the disc to form a fully body-guided disc.
2. Globe valve are suitable for “blow down” applications for a high differential pressure across the valve when it is partially opened.

Application of globe valve :-

-Super heater primary desalt

-Super heater Secondary desalt

-Super heater desalt main pipe

-Warm water pump pipeline

-Reheater desalt

-Separator outlet pipeline nitrogen charge

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joginder chauhan

Hi, all power engineers. I am Joginder Chauhan. I am the founder of the website www.askpowerplant.com. I am also a power plant engineer with over ten years of experience in the power sector. During this period, I learned about different power technologies like AFBC, CFBC, TRAVELLING GRATE, PULSATING GREAT, PF BOILER, WHRS, and many more. My motive for this site is to share my power sector knowledge with every person who belongs to this field; on this website, I share information related to boiler operation, boiler maintenance, turbine operation & maintenance, boiler & turbine question answers, D.M plant, and all topic related to power plant sector please join this website for latest updation regarding power plant ………..thanks ( JOGINDER CHAUHAN )

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