Hot Tapping Ball Valves / Ball Valves for Network Expansion
The Vexve hot tapping ball valve (type NAVAL) is used to extend pipework systems during operation.
This allows new customers to be connected to the existing pipe network at full operating pressure and temperature.
Draining, filling and venting the existing pipe network is no longer necessary, resulting in considerable time and cost savings.
When using a hot tapping ball valve there is no need to use a sluice plate.
Hot Tapping is therefore even easier and safer.
Vexve hot tapping ball valves are often used in conjunction with our innovative hot tapping system.
You can find more information on the hot tapping process on our pages hot tapping tools and hot tapping service.
Applications hot tapping ball valve
- uncomplicated expansion of pipe networks by creating new connections under full pressure and full temperature without interrupting the supply or draining the system
- preparation of a piping system for future connections (see also branching ball valves)
- suitable for all non-aggressive media, such as district heating or cooling water, oil and compressed air
- operating conditions according to data sheet
Construction hot tapping ball valve
- fully welded steel or stainless steel body in compact design
- stainless steel floating ball with spring-loaded, graphite-reinforced PTFE ball seals
- blow-out safe, short spindle made of stainless steel with triple sealing (two FPM O-rings + graphite-reinforced PTFE pressure ring)
- spindle with screw-on and weldable cap
- operation by means of external hexagon wrench with 90° open/close stop
- reinforced welding end
- incl. threaded connection for Kähler tapping tool (type Naval)
Versions hot tapping ball valve
- Nominal sizes:
DN20-200 (steel version)
DN32-100 (stainless steel version) - Pressure ratings:
PN25, 40 - Connection types:
welding end / welding end: DN20-150
welding end / flange: DN150-200 - Bore types:
full bore (steel version)
(DN200 reduced bore)
reduced bore (stainless steel version) - Operation:
external hexagon wrench or optionally available with extended spindle and hand lever - Special solutions:
special customer-oriented solutions on request
Features hot tapping 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
- available from stock


Easy installation and application, good insulating properties
- safe, quick and easy to install
- suitable for many different applications, even in demanding environments
- low torque
- no through rotation of the ball possible thanks to the open/close stop
- clear position indicator
- full bi-directional tightness (EN 12266-1, leak rate A)
- can be used as a “normal” valve after hot tapping in connection with long spindle and hand lever
- good and cost-effective insulation thanks to short stem
- no issues with condensation
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