Detailed Product Description

DGV API Flange gate valves are widely used in the industries of oil, chemical, medicine-made, fertilizer, electric power, etc. as an on/off control valve for passing or cutting off the medium. The gate is designed as a wedge elastic gate of easy seal and wearing compensation, seal surface is overlayed with wearing resistent hardened alloy; the seat seal surface overlayed with wearing resistant hardened alloy to be matched with gate seal surface; the stem is specially treated to ensure its strength, rigidity, corrosion resistance and abration resistance. DGV gate valve is with reliable seal, safe use, easy operation. Valves are available in a complete range of body/bonnet materials and trims, which are used for the medium of water, steam, oil product, nitric acid, acetic acid, etc.

Applicable Standard

Design Standard:     API 600, BS1414.

Face to Face:          ASME B16.10, EN 558

End Flange:             ASME B16.5, ASME B16.47

Buttwelding Ends:    ASME B16.25

Inspection and Test: API 598

Products Range

Size:                     2" ~ 60"(DN50 ~ DN1500)

Rating:                  ANSI 150lb ~ 2500lb

Body Materials:     Carbon Steel, Stainless Steel, Alloy Steel, Duplex Steel

Trim:                     Per API 600

Operation:             Handwheel, Gear, Electric, Pneumatic, Hydraulic.

 

Design Features

Full port design

OS&Y, outside and screw

Bolted bonnet or Pressure sealed bonnet, back seal structure

Flexible wedge, fully guided

Choice of Solid or split wedge

Renewable or welded seat

Extended stem design for low temperature

Flanged or butt-welding ends