Gate Valve

Slab Gate Valve

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.

Slab gate valve


  • 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 butt welding ends
  • Fire safe design to API 6FA/ API 607


Design Standard:API 6D, ASME B16.34

Face to Face:API 6D, ASME B16.10,

End Flange: ASME B16.5, MSS SP44

Buttwelding Ends:ASME B16.25

Test & Inspection:API 6D, API 598

Slab gate valve the main performance specifications

Design grade The test pressure at room temperature(MPa) Suitable temperature ℃ Applicable medium
shell left seal low pressure seal “G” type “D” type conventional type anti-sulfur type basic type
Nominal pressure PN(MPa) 1.6 2.4 1.76 0.6 -29~50 -45~21 -2~121 The medium of total content of H2S and CO2more than 500mg/m2 oil, gas, water,etc
2.5 3.75 2.75 0.6
4.0 6.0 4.4 0.6
6.4 9.6 7.04 0.6
Pound grade Lb 150 3.0 2.2 0.6
300 7.7 5.6 0.6

API 6D slab gate valve main material list

body WCB WC6 A352-LCB A351-CF8M
disc A105+ENP 20CrMoV+STL ANSI410+ENP ANSI316+ENP
stem A276-420 2Cr13 A182-A6a A182-A316S
seat A105+PTFE 20CrMoV+STL A105+PTFE A182-F316+PTFE
packing NBR/FPM Flexible Graphite PTFE+FPM
gasket Graphite+304
bolt 35 35CrMo A193-B7M A193-B8
applicable medium water,oil,steam team,oil propane,ethylene nitrose

Slab gate valve Dimensions & constructral diagram(150lb)

Slab Gate Valve

Slab Gate ValveSlab Gate Valve

API 6D Double Expanding Slab Gate Valve Conform to API 6D, and API 6A. They are tested according to API 598, and marked as per MSS SP-25

For more details, please download catalogue for reference or contact with us.

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