Vexve steel ball valves

Available in sizes from DN 10 to DN 1200

X-series

DN 10-50 with composite handle

Steel ball valves

DN 65-500, reduced bore

Steel ball valves

DN 50-400, full bore

Trunnion mounted steel ball valves

DN 150–1200

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Steel ball valve features

Fully welded structure of high quality materials

  • pressure vessel steel
  • suitable for many different applications and withstands varying water quality
  • lightweight and space-saving design
  • practically maintenance-free

Floating ball structure with spring loaded ball seals

  • total bi-directional tightness (EN 12266-1, leakage rate A)
  • tolerates thermal expansion axial loads
  • takes pressure shocks without damage to the structure

Blow-out safe stem construction

  • Ensures safe valve operation
  • 90-degree position limiter
  • valve position is always readable

Easy to install and insulate

  • lightweight and simple to install
  • the entire valve is easy to insulate
  • no leakage risk
  • no condensation problems

Trunnion mounted steel ball valve features

Trunnion mounted design

In the trunnion mounted ball valve design, the sealing rings are floating and the ball is fixed. The ball and the stem are attached to each other on both sides of the ball, which provides more support, especially as the ball size increases.

The fully welded construction of the trunnion mounted ball valves increases district heating lines’ lifetime as it eliminates the risk of leakage and air ingress. The face-to-face lengths of the valves are standardized, which guarantees space-saving installation of the valves. Valves can be installed in any position and have four lifting lugs, which makes the moving and turning of the valve easier even in locations where the space is limited.

Double block and bleed functionality

The double block and bleed functionality allows draining of the valve body to check the tightness of the valve, even when the pipeline is pressurized. The draining of the valve body is possible to do in both valve positions — open or closed.

The medium flows through the valve when the valve is in the open position. The seats ensure that the valve is tight. Testing the tightness of the valve can be done by closing the valve and draining the accumulated medium from the ball cavity. After the ball cavity is empty, you can check that the valve is tight by noticing that the flow from the draining valve stops.

Stem construction in sizes DN 150-400

Vexve's trunnion mounted ball valves have a blow-out safe stem construction, which ensures safe operation of the valves at all times. The position of the valve is always visible from the top of the valve stem. In sizes DN150-400, the stem sealing construction includes triple O-rings, which guarantee complete tightness. The top two O-rings can be easily replaced if needed.

Stem construction in sizes DN 450-1200

Vexve's trunnion mounted ball valves have a blow-out safe stem construction, which ensures safe operation of the valves at all times. The position of the valve is always visible from the top of the valve stem. In sizes DN 450-1200, the stem sealing construction includes five O-rings, which guarantee complete tightness. The top two O-rings can be easily replaced if needed.

Single piston effect

The seats have a single piston effect (SPE) which means that the seats are able to relieve increased pressure automatically from the cavity of the valve body to the district energy network.

The pressure in the body cavity can increase for example due to temperature changes.

Steel ball valve main characteristics

Applications

  • district heating networks

  • district cooling networks

  • HVAC side of heating and cooling systems as well as compressed air and oil networks etc.

Available

  • in sizes from DN 10 to DN 1200

  • with full bore or reduced bore

  • with welded connections according to EN (DIN) and GOST standards

  • also with flanged or threaded connections

  • with manual lever, manual gear, pneumatic, electric or hydraulic actuator

Characteristics

  • fully welded construction

  • lightweight

  • easy to insulate

  • space saving design

  • easy to install and use

  • maintenance-free

  • long service life

  • total bi-directional tightness (EN 12266-1, leakage rate A)

  • high Kv value (minimum pressure loss, minimized pumping costs)

  • high-quality materials, suitable for many different applications

  • stainless steel or stainless material plated ball

  • spring loaded PTFE ball seals

  • blow-out safe stem construction

  • stem sealing with double o-rings

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