Longstem Ball Valves / Underground Ball Valves


The longstem ball valve from Vexve (type NAVAL) has been specially designed for areas with limited space,
where the installation of above-ground valves is difficult due to dense building development,
such as in urban areas or confined industrial sites.

The fully welded underground valve is manufactured and tested in accordance with Euro standard EN 488-2015 and EHP 003
and therefore meets all requirements for soil and water protection. They are also highly reliable and have a long service life.

Longstem ball ball valves from Vexve can be used in a variety of process control applications, such as heating and cooling systems
and are particularly suitable where media in underground piping systems need to be reliably shut off.

Applications longstem ball valve

  • constructed for many different applications in underground installations
  • suitable for all non-aggressive media, such as district heating or cooling water, oil and compressed air
  • operating conditions according to data sheet

Construction longstem ball valve

  • fully welded steel body in a compact design
  • stainless steel floating ball with spring-loaded, graphite-reinforced PTFE ball seals
  • blow-out safe, dry spindle made of stainless steel with triple sealing (two FPM O-rings + graphite-reinforced PTFE pressure ring)

Versions longstem ball valve

  • Nominal sizes:
    DN25-800
  • Pressure ratings:
    PN25-40
  • Connection types:
    welding end /welding end
  • Bore types:
    full or reduced bore
  • Stem lengths:
    available in various standard spindle heights or optionally with customized spindle length
  • Operation:
    optionally available with T-wrench (4- or hexagon), manual gear, electric or hydraulic drive
  • Accessories:
    Venting/draining valves (Vexve 231/1 and 231/IAP/M, DN20-50) available separately
  • Special solutions:
    special customer-oriented solutions on request

Features longstem 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
  • 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
  • low heat loss due to air-filled spindle dome
  • full bi-directional tightness (EN 12266-1, leak rate A)
  • good and cost-effective insulation
  • no issues with condensation

This might also interest you:

Venting/Draining Ball Valves
Venting/Draining Ball Valves
Fully Welded Ball Valves
Fully Welded Ball Valves
Kähler Product Portfolio
Kähler Product Portfolio

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Phone +49 (2174) 7848 - 0 | Email: info@kaehler-armaturen.de | Arrange a consultation

Our products in the category „Longstem Ball Valves“

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