Vexve trunnion-mounted ball valves

Ball valve with trunnion-mounted ball made of steel or stainless steel, can be used for all non-aggressive media, such as district heating, heating hot water, air-conditioning cold water, oil and compressed air.

Ball valves with trunnion mounting

The ball valves are designed for above-ground and underground installations and function reliably even under the most demanding conditions.

The range includes full and reduced bore ball valves in nominal sizes from DN 150 to DN 900 with weld ends or flanged ends up to pressure rating PN40.

In the trunnion mounted design, the sealing rings are floating and the ball is fixed. The fully welded design of the trunnion mounted ball valves increases the service life as it eliminates the risk of leakage and air ingress.

The overall lengths of the ball valves with trunnion bearings are standardised, which guarantees space-saving installation of the ball valves. The trunnion mounted ball valves can be installed in any position and have lifting lugs, which makes it easier to move and turn the ball valve even in places where space is limited.

Double Block & Bleed

The "Double Block & Bleed" function allows the housing to be drained in order to check the tightness of the ball valve, even when the pipeline is under pressure. Draining of the housing is possible in both positions - open or closed.

The tightness test of the ball valve can be carried out with the "Double Block & Bleed" function as follows. The medium flows through the ball valve when it is in the open position. The seals ensure that the ball valve is tight. The tightness of the ball valve can be checked by closing the ball valve and draining the accumulated medium from the cavity. After the ball cavity is empty, you can check the tightness of the ball valve.

Nominal widths / Connection types

Our trunnion mounted ball valves are available in nominal sizes DN150 to DN900 and the following connection types:

Welding end / Welding end
Flange / Flange

Stem construction

Our trunnion mounted ball valves have a blow-out proof stem design which ensures safe operation of the ball valves at all times.

The position of the ball valve is always visible from above on the valve stem. In the nominal sizes DN 150 to DN400, the stem sealing construction includes three O-rings. In the nominal sizes DN 450 to DN900, the stem sealing construction includes five O-rings.

In each case, absolute tightness is guaranteed. The top two O-rings can be easily replaced if necessary.

Single-Pistion-Effect

The ball sealing seats use the Single Piston Effect (SPE), which enables the seats to automatically relieve increased pressure inside the ball valve from the dead space into the pipeline.

The pressure in the dead space can increase due to temperature changes, for example.

Data sheet / information / downloads

Vexve trunnion-mounted ball valves

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