Through Conduit 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.
Series - 150 To 900
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.
Design Features
- Full Bore design
- Self cavity relief
- Double block & bleed
- Single disc or double disc
- Emergency Sealant injection
- Flanged or butt welding ends
- Fire safe design to API 6FA/ API 607
- Diversion hole type or non diversion hole
Product Specifications
- Size1″～48″ DN25-DN1200
- Pressure Class "150, 300, 600, 800, 900"
- End Connection RF, RTJ, BW
- Body Material Carbon steel, stainless steel
- Wedge Material 16Mn + ENP/A105 + ENP/1Cr18Ni19/A276-304
- Seat Material 16Mn + PTFE /A105 + PTFE/1Cr18Ni19 + PTFE/A276-304 + PTFE
- Stem Material A276-420, 2Cr13, 1Cr18Ni19, A276-304
- Design Standard JB/T5298, JBT1692, API 6D, ASME 16.34
- Face to Face Standard API 6D, ASME B16.10, GB/T 12221, GB/T16972, JB/T5298
- Test Standard JB/T9092, API 6D, API 598
- Temperature Range -29℃～+121℃
- Actuator Options Handwheel, Bevel Gear, Pneumatic, Electric
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Structure Style
- Full Port, OS&Y, Bolted Bonnet
- Flexible Wedge / Solid Wedge
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Connection Standard
- Flange Drilling: ASME B16.5, MSS SP44
- Butt Weld: ASME B16.25, GB/T 12224