NSV cast steel gate valves are widely used in the industries of oil, chemical, medicine-made, fertilizer, electrical power, etc. as on/off control valves for passing or cutting off the medium. The gate is designed as a wedge flexible gate of easy seal and wearing compensation, seal surface is overlaid with wearing resistant hardened alloy; the seat seal surface overlaid 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 abrasion resistance. Our gate valve is with reliable seal, safe use and 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 603
Face to Face:       ASME B16.10, EN 558, DIN3202
End Flange:        ASME B16.5, ASME B16.47, DIN2533
Buttwelding Ends:     ASME B16.25, DIN3239
Inspection and Test: API 598, DIN3230
 
Products Range
Size:      2" ~ 60"(DN50 ~ DN1500)
Rating:    ANSI 150lb ~ 2500lb
 
Body Materials:  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 
 Pressure Seal 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