NSV Slab Gate Valves(Parallel type gate valves, Through Conduit Gate Valves)are widely used in oil, natural gas long-distance pipelines and gas fields as open/close control valves. Valves used in forging or casting body, the gate designed with diversion holes, non-diversion holes; single plate and double plate structure; Seat used bi-direction seal seat which mainly based on the metal seat sealing and assisted with soft seat sealing as a second type of seal. The series of parallel type gate valve has rational design, compact structure, sulfur resistance, corrosion resistance, wear-resistant, reliable sealing, and light torque of switches, easy-to-use.
 
Applicable Standard
Design Standard:   API 6D, ASME B16.34
Face to Face:        API 6D, ASME B16.10,
End Flange:           ASME B16.5, ASME B16.47
Buttwelding Ends:  ASME B16.25
Test & Inspection:  API 6D, API 598
 
Products Range
Size:   2" ~ 40"(DN50 ~ DN1000)
Rating:  ANSI 150lb ~ 900lb
 
Body Materials:     Carbon Steel, Stainless Steel, Alloy Steel
Operation: Handwheel, Gear, Electric, Pneumatic, Hydraulic
 
Design Features
Full Bore design
Double block & bleed
Self cavity relief
Emergency Sealant injection
Single disc or double disc
Diversion hole type or non diversion hole
Flanged or buttwelding ends
Fire safe design to API 6FA/ API 607