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Home Catalog Gate valves Gate valves

Gate valves

Gate valves, manually operated, flange type, metal-to-metal sealing, are used in X-mas trees, wellheads or manifolds for complete shutting of the medium flow from oil and gas well.

We developed the series of the gate valves:

  • nominal sizes 2 1/16″, 2 9/16″, 3 1/8″, 31/16″, 4 1/16″, 7 1/16″
  • for working pressure 2000 psi, 3000 psi, 5000 psi, 10000 psi, 15000psi working mediums
  • K1 – medium with miserable content of H2S and content of C02 up to 6%
  • K2 – medium with content of H2S and C02 up to 6% each
  • КЗ – medium with content of H2S and C02 up to 25% each

The advantage of these gate valves is the possibility of elimination of the leakage through stem packing by means of injecting of the sealing paste into the packing. The design of the gate valves provides the replacement of the packing when necessary without disassembling the valve from wellhead equipment. The gate valves are equipped with the indicator of the gate position.

Figure 3. 1.Handwheel 2.Bearing housing 3.Pin 4.Bonnet 5.Nut 6.Ring gasket 7.Stud 8.Stem 9.Gate 10.Seat 11.Ring 12.Body 13.Seal 14.Plug 15.Injector 16.Packing 17.Gland 18.Spacer 19.Gate position indicator

Figure 4. 1.Indicator 2.Handwheel 3.Nut 4.Bonnet 5.Bolt 6.Packing 7.Stem 8.Plug 9.Ring gasket 10.Seat 11.Seal 12.Spring 13.Body 14.Gland 15.Bearing 16.Bearing housing 17.Driving nut 18.Nut 19.Grease cap 20.Injector 21.Gate 22.Guide 23.Balancing stem 24.Injector 25.Support 26.Plug 27.Grease cap 28.Screw

Gate Valves General Technical Data (for Figure 4)

Designation Working pressure Nominal Size API Class of Material Overall dimensions
H B L
MPa(psi) mm(inches) mm mm mm
3MC-50×1050K3 105 (15000) 52(2 1/16) FF 610 483 462
3MC-65×1050K2 65(2 9/16) AA 1060 533 510
3MC-80×1050K3 78(3 1/16) FF 1045 598 522
3MC-100×1050K3 103 (4 1/16) 1573 598 580

Gate Valves with Pasteless Packing

In these valves the design does not provide the possibility of injection the paste into packing

Figure 5. 1.Handwheel 2.Ring 3.Bearing housing 4.Fixators 5.Bearing 6.Bonnet 7.Screw 8.Gate driving nut 9.Sealing ring 10.Grease cap 11.Gland 12.Packing 13.Grease cap 14.Pin 15.Stem 16.Body 17.Seat 18.Gate 19.Ring 20.Guides

Gate Valves General Technical Data (for Figure 5)

Designation Working pressure Nominal Size API Class of Material Overall dimensions
H B L
MPa(psi) mm(inches) mm mm mm
3MC-50×140K1 14 (2000) 52 (2 1/16) AA 597 295 414
3MC-50×140K2 DD
3MC-50×140K2 EE
3MC-50×140K3 FF
3MC-65×140K1 65 (2 9/16) AA 600 333 254
3MC-65×140K1 BB
3MC-50×210K1 21 (3000) 52 (2 1/16) AA 675 375 330
3MC-50×210K2 EE
3MC-65×210K1 65 (2 9/16) AA 780 423 414
3MC-100×210K1 35 (5000) 100 (4 1/16) 810 550 534