Gate Valves

A Gate Valve is a valve which opens by lifting a round or rectangular gate/wedge out of the path of the fluid. The distinct feature of a gate valve is the sealing surfaces between the gate and seats are planar, so gate valves are often used when a straight-line flow of fluid and minimum restriction is desired. The gate faces can be parallel, but are most commonly wedge-shaped.Because of their ability to cut through liquids, gate valves are often used in the petroleum industry.

  1. Cast Steel Gate Valve

  2. Forged Steel Gate Valve

  3. Knife Gate Valve

  4. Pressure Seal Gate Valve

 

  1. Cast Steel Gate Valve

Cast steel gate valves offer the ultimate in dependable service for steam, air, gas, oil, oil vapor, and high pressure installations.

 

Image result for trim material for cast steel gate valve                          Image result for trim material for cast steel gate valve

Cast Steel Gate Valve Range

Size : 2”~48” N.B

Rating :ANSI 150~300~600~900~1500~2500

Body Materials : Carbon Steel, Stainless Steel, Alloy Steel, Duplex Steel

Trim :Per API 600

End Connection :SW,BW, Flanged,  Hub Connectors, Compact Flange.

 

2.Forged Steel Gate Valve

Forged Steel Gate Valves are designed to provide maximum serive life and depandability. Forged steel gate valves can be full port or reduced port as per customer reqirements.

 

                        Image result for forged steel gate valve             Walworth Forged Steel Gate Valve

 

Forged Steel Gate Valve Range

Size : 1/2″ – 8″ DN15-DN200

Pressure Rating :ANSI Class150LB- 2500LB / PN16- PN100

Body Materials : Alloy 20, Monel, Inconel, Hastelloy105,A105,LF1, LF2, F5, F11, F22, A182 F304 (L), F316 (L), F347, F321, F51),

Trim :Per API 602

End Connection :SW,BW, Flanged,  Threaded.

 

3.Knife Gate Valve

For extremely thick fluids, a specialty valve often known as a Knife Gate Valve is used to cut through the liquid.On opening the gate valve, the flow path is enlarged in a highly nonlinear manner with respect to percent of opening. This means that flow rate does not change evenly with stem travel. Also, a partially open gate tends to vibrate from the fluid flow. Most of the flow change occurs near shutoff with a relatively high fluid velocity causing gate and seat wear and eventual leakage if used to regulate flow.

 

Image result for knife gate valve

          Knife Gate Valve

Knife Gate Valve Range

Size : 2”~40” (DN50 to DN1000)

Rating :ANSI 150lb ~ 300lb

Body Materials : Carbon Steel, Stainless Steel, Alloy Steel, Duplex Steel

Trim :Per API 600

End Connection :SW,BW, Flanged,  Hub Connectors, Compact Flange.

 

4.Pressure Seal Gate Valve

The pressure seal gate valves are designed in accordance with API600 and ASME B16.34 for service of high temperature and high pressure and are widely used in fossil fuel power plant. Compared with bolted bonnet joint valves, it provides absolute reliable sealing of the bonnet joint, so that the pressure seal valves are more compact and rigid as well as maintenance cost-effective at high temperature and high pressure service.

 

                  Image result for Pressure Seal Gate Valve                  Image result for Pressure Seal Gate Valve

Pressure Seal Gate Valve Range

Size :1/2″~60″(DN15~1500)

Rating : Class150~2500(PN10~420)

Body Materials : Carbon Steel, Stainless Steel, Alloy Steel, Duplex Steel

End Connection :BW, RF,RTJ