Trunnion Mounted Ball Valves

The VEXVE trunnion-mounted ball valve (Naval type) is designed for systems with large nominal diameters and demanding applications,
where high performance is required due to high pressures or high temperatures.

In the trunnion-mounted design, the ball is rigidly connected to the spindle at two points, ensuring greater stability and longer service life.
The sealing rings are floating.

Another special feature of the trunnion-mounted ball valves is the integrated ‘Double Block & Bleed’ function,
which allows the body to be drained and subsequently leak-tested, even under pressure.
The ball seals, in turn, utilise the Single-Piston Effect (SPE),
which automatically transfers increased pressure within the ball valve from the dead space into the pipeline.

Vexve’s trunnion-mounted ball valves can be used in a wide range 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 valves

specially constructed for large nominal diameters and demanding processes and conditions, such as high pressures or high temperatures
suitable for all non-corrosive media, such as district heating, domestic hot water, chilled water for air conditioning, oil and compressed air
operating conditions as per the data sheet

Construction
trunnion mounted ball valve

fully welded steel body in a compact design
spindle-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 triple or quintuple sealing depending on the nominal diameter (three or five FPM O-rings + graphite-reinforced PTFE pressure ring)
free spindle with mounting flange according to EN ISO 5211 (90° open/closed position)
incl. drain valve with double block & bleed function
incl. four lifting eyes
incl. base plate

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
Operation:
optionally available with manual gear, pneumatic, electric or hydraulic drive
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 and ball mounted on a spindle
compact construction
space-saving design
maintenance-free
long service life

Easy installation and application, good insulating properties

safe, quick and easy to install
easy to fit even in confined spaces thanks to lifting eyes and base plate
suitable for a wide range of applications, particularly in demanding environments
low torque
no through rotation of the ball possible thanks to open/close stops
complete bidirectional sealing (EN 12266-1, leakage rate A)
absorbs pressure shocks without damaging the structure
good and cost-effective insulation
no issues with condensation

Reliable sealing

safe operation thanks to a blow-through-proof spindle fitted with three O-rings (DN125–400) or five O-rings (DN450–1200)
the top two O-rings in both versions can be replaced if necessary

“Double Block & Bleed” – multifunctionality in a single valve

combined double shut-off and bleed function for safe and reliable leak testing, even under pressure
space-saving, lightweight and resource-efficient, as it eliminates the need for additional shut-off and bleed valves

Single-piston-effect – increased safety through pressure relief

ball-seals equipped with the single-piston effect (SPE)
increased safety through the automatic transfer of excess pressure from the dead space into the pipeline