The flange-throttle valve type LDK-4 is mounted between flanges according to DIN 24154 T2R2 in pipelines. The valve LDK-4 stands out due to its compact design and can handle differential pressure up to 100 mbar. We can produce this valve from any materials available on the market, depending on the application (temperature, medium, pressure).

With our three sided coated sealing gasket we can offer leakage rates of max. 0,05% of Kv 90°. To achieve a leakage rate of 0%, the valve will be equipped with a double jacketed gasket and charged with sealing air.

The mounting position of the valve standardly is provided with horizontal shaft, but upon request customized solutions are available.

LDK-4 - Standard Configuration
Sizes (DN) 63 – 2000 (up to 3000 possible as a custom order)
Type Flange valve
Standards DIN 24154 T2R2/R4 (every pattern of drilling available upon request)
Operating Temperatures -100°C to +1100°C
Operation options
  • With free shaft-ends
  • Manual operation with a grid handle with locking mechanism
  • Continuously variable fine adjustment
  • A corresponding shaft adaption with the DIN ISO 5211 mounting kit
  • With an attached actuator (pneumatic, electric or hydraulic)
LDK-4 - Closing Types and Impermeability Classes
Swing Through 99% impermeability compared to fully opened disk
With a Stop Bar in the Body 99,5% impermeability compared to fully opened disk
With a Stop Bar and Gasket 99,95% impermeability compared to fully opened disk
Sealing Air Up to 100% impermeability

More Information

JASTA Valve LDK / Product Brochure PDF File



  • EBNER Industrieofenbau Gesellschaft m.b.H., Leonding / Österreich
  • KGO GmbH, Wetter
  • Recker Ziegelwerk Berentelg & Hebrok OHG, Recke
  • TANN Europe GmbH, Essen