Trunnion Mounted Ball Valves

The trunnion mounted ball valve from Vexve (type Naval) has been designed for systems with large nominal diameters and demanding applications
where high performance is required, e.g. due to high pressures or high temperatures.

In the trunnion mounted design, the ball is firmly connected to the spindle at two points, which ensures greater stability and longer process running times.
The sealing rings are mounted on floating bearings.

Another special feature of the trunnion ball valves is the integrated "double block & bleed" function,
which enables the body to be emptied and then tested for leaks, even under pressure.
The ball seals in turn utilize the single-piston effect (SPE),
whereby increased pressure within the ball valve is automatically transferred from the dead space into the pipeline.

Vexve trunnion mounted ball valves can be used in a variety of process control applications,
such as heating and cooling systems, compressed air or oil networks
and are particularly suitable for high performance applications or connections with large nominal diameters.

Applications trunnion mounted ball valve

specially constructed for large dimensions, demanding processes and conditions, e.g. high pressures or high temperatures
suitable for all non-aggressive media, such as district heating or cooling water, oil and compressed air
operating conditions according to data sheet

Construction trunnion mounted ball valve

fully welded steel body in a compact design
trunnion mounted ball made of nickel-plated steel with spring-loaded, floating, graphite-reinforced PTFE ball seals
ball seals with single-piston effect
blow-out safe spindle made of stainless steel with 3 or 5-fold sealing depending on the nominal diameter (three or five FPM O-rings + graphite-reinforced PTFE pressure ring)
free spindle with mounting flange in accordance with EN ISO 5211 (90° open/close stop)
incl. draining valve with double block & bleed function
incl. four lifting lugs
incl. stand

Versions trunnion mounted ball valve

Nominal sizes:
DN125-1200
Pressure ratings:
PN16, 25, 40
Connection types:
welding end / welding end
flange / flange
Bore types:
full or reduced bore
Operation:
optionally available with manual gear, pneumatic, electric or hydraulic actuator
Special solutions:
special customer-oriented solutions on request

Features trunnion mounted ball valves

Fully welded construction of high-quality materials

made from high-quality European materials following highest quality standards
high user and environmental friendliness
high energy efficiency
robust and reliable even at high pressure and high temperatures thanks to pressure vessel steel
compact construction
space-saving design
maintenance-free
long service life

Easy installation and application, good insulating properties

safe, quick and easy to install
easy installation even in places with limited space thanks to lifting lugs and stand
suitable for many different applications, especially in demanding environments
low torque
no through rotation of ball possible thanks to the open/close stop
full bi-directional tightness (EN 12266-1, leakage rate A)
absorbs pressure shocks without damaging the structure
good and cost-effective insulation
no problems with condensation

Reliable tightness

safe operation thanks to blow-out safe spindle equipped with three O-rings (DN150-400) or five O-rings (DN450-1200)
upper two O-rings can be replaced in both versions if required

“Double Block & Bleed” - multifunctionality in just one valve

combined double block and bleed function for safe and reliable leak testing, even under pressure
space-saving, lightweight and resource-saving thanks to the elimination of additional shut-off and drain valves

“Single-piston” effect - increased safety through pressure relief

ball seals equipped with single-piston effect (SPE)
increased safety due to automatic transfer of increased pressure within the dead space into the pipeline