Trunnion Mounted

Trunnion Mounted Ball valves are straight-through flow valves which provide positive shut-off with minimal pressure drop and flow turbulence. The barrier to flow is a ball which is rotated 90 degrees to the direction of flow.

In Trunnion Mounted valves, the ball is held in a fixed axial position by upper and lower stems (trunnions) and can move only in a rotational mode. The resilient seats are contained in metal carriers which are spring loaded against the ball. Hoe ever metal seats normally tungsten carbide coated can also be used. Line pressure applied to a close valve increases the spring load on the upstream seat to effect a tight seal. The primary seating is therefore on the upstream seat permitting trunnion mounted ball valves to be used for “block and bleed” service.

A variation of this is the Double Piston valve in which the upstream seat works as a standard trunnion mounted seat, but the downstream seat can also be pulled on with pressure by pressure in the body cavity, this is often used in top entry welded in line ball valves were a test can be applied into the body after an over haul without pressure testing the entire pipeline.

Because the stem motion from full open to full closed is a 90 degree rotation, ball valves are ideally suited for automatic operation.

Results

  • Valve Type: Ball
  • Subtype: Trunnion Mounted
  • Valve Size: 150(mm), 6(inch)
  • Bore: FB
  • Class Rating: 150
  • Body Material: Low Temperature Carbon Steel
  • End Connection: RF
Qty

Trunnion Mounted Ball valves are straight-through flow valves which provide... More information

  • Valve Type: Ball
  • Subtype: Trunnion Mounted
  • Valve Size: 50(mm), 2(inch)
  • Bore: FB
  • Class Rating: 150
  • Body Material: Carbon Steel
  • End Connection: RF
Qty

Trunnion Mounted Ball valves are straight-through flow valves which provide... More information

  • Valve Type: Ball
  • Subtype: Trunnion Mounted
  • Valve Size: 40(mm), 1.5(inch)
  • Bore: FB
  • Class Rating: 150
  • Body Material: Stainless Steel
  • End Connection: RF
Qty

Trunnion Mounted Ball valves are straight-through flow valves which provide... More information

  • Valve Type: Ball
  • Subtype: Trunnion Mounted
  • Valve Size: 400(mm), 16(inch)
  • Bore: FB
  • Class Rating: 900
  • Body Material: Carbon Steel
  • End Connection: RF
Qty

Trunnion Mounted Ball valves are straight-through flow valves which provide... More information

  • Valve Type: Ball
  • Subtype: Trunnion Mounted
  • Valve Size: 450(mm), 18(inch)
  • Bore: FB
  • Class Rating: 900
  • Body Material: Carbon Steel
  • End Connection: RF
Qty

Trunnion Mounted Ball valves are straight-through flow valves which provide... More information

  • Valve Type: Ball
  • Subtype: Trunnion Mounted
  • Valve Size: 450(mm), 18(inch)
  • Bore: FB
  • Class Rating: 1500
  • Body Material: Carbon Steel
  • End Connection: RTJ
Qty

Trunnion Mounted Ball valves are straight-through flow valves which provide... More information

  • Valve Type: Ball
  • Subtype: Trunnion Mounted
  • Valve Size: 600(mm), 24(inch)
  • Bore: FB
  • Class Rating: 900
  • Body Material: Carbon Steel
  • End Connection: RF
Qty

Trunnion Mounted Ball valves are straight-through flow valves which provide... More information

  • Valve Type: Ball
  • Subtype: Trunnion Mounted
  • Valve Size: 500(mm), 20(inch)
  • Bore: FB
  • Class Rating: 300
  • Body Material: Low Temperature Carbon Steel
  • End Connection: RF
Qty

Trunnion Mounted Ball valves are straight-through flow valves which provide... More information

  • Valve Type: Ball
  • Subtype: Trunnion Mounted
  • Valve Size: 200(mm), 8(inch)
  • Bore: FB
  • Class Rating: 1500
  • Body Material: Low Temperature Carbon Steel
  • End Connection: RTJ
Qty

Trunnion Mounted Ball valves are straight-through flow valves which provide... More information

  • Valve Type: Ball
  • Subtype: Trunnion Mounted
  • Valve Size: 250(mm), 10(inch)
  • Bore: FB
  • Class Rating: 1500
  • Body Material: Low Temperature Carbon Steel
  • End Connection: RTJ
Qty

Trunnion Mounted Ball valves are straight-through flow valves which provide... More information

Valve Categories

Callidus stock several types of valves. Each of those can form an essential part of your flow control solution. Whether it is in the mining, oil & gas or water industry.

Our valves include, but are not limited to: ball valves for on/off control without pressure drop; butterfly valves for an accurate flow regulation; check valves to allow a one-way flow; gate valves for low pressure drop in on/off control; and globe valves for an optimal constant flow.

Our valves are from high-end manufacturers and on stock in a various sizes, class ratings, body material and end connections.