Pressure reducing valve TLV COS-21

Pressure reducing valve TLV COS21
in stock
Price: specify




  • Manufacturer: TLV (Japan)
  • Material: malleable iron
  • Action type: pilot operated
  • Critical case parameters (not operating parameters): maximum allowable pressure (bar) Pmax: 21 maximum allowable temperature (°C) Tmax: 220
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  • Specifications
  • Description
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Model COS-21
Body material Ductile Iron (GGG-40.3)
Connection type Flanged
Connection diameter DN 15, 20, 25, 40, 50, 65, 80, 100
Maximum working pressure (MPa g PMO 21
Maximum operating temperature (° C) TMO 220
Inlet pressure range (barg) 13.5 - 21
Setting pressure from 5.5 barg up to 84% of inlet pressure
Maximum pressure drop across valve 8.5 bar
Minimum consumption 5% of design flow (for DN65 – DN100: 10% of design flow)

Direct acting pressure relief valve with shock absorbing piston

The technologically advanced pressure reducing valve with integrated condensate separator and integrated steam trap provides precise pressure control and steam preparation for increased efficiency.

  1. Saving space during installation, simplifying the piping and maintenance work.
  2. The self-positioning and shock-absorbing spherical piston and the special design of the pilot regulator ensure accurate pressure maintenance even under adverse operating conditions.
  3. An integral cyclone separator with 98% efficiency and a free-float steam trap ensure high outlet steam quality.
  4. Most of the internal parts of the movement are made of stainless steel for a long service life.
  5. Pilot and main filters have a wide surface area for longer service intervals.
  6. The internal impulse line eliminates the need for the external one.
  7. COS-16 dampers from DN65 and above have a built-in silencer.


  • Pickup from a warehouse in Kiev
  • New Mail - at the rates of the delivery service
  • SAT - at the rates of the delivery service
  • Deliveri - at the rates of the delivery service


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Pressure reducing valve TLV COS21

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