müller coax group

Special Valves


Data Sheets
General Operating Manual
ports flanges PN 16/40/64
function NC / NO
pressure range 0-64 bar (Δp max. 30 bar)
KV value
DN 15 25 40 50 80
/h 7,5 15 36 46 200
media gaseous
flow direction A B as marked
switching time DN 15 - DN 50: 60 ms
DN 65 - DN 80: 100 ms
media temperature DN 15 - DN 50: 400 °C
DN 65 - DN 80: >300 °C
ambient temperature 50 °C direct mounted pilot valve
weight DN 15 - DN 50: 23,0 kg
DN 65 - DN 80: 130,5 kg
nominal voltage Un 24 V DC
Un 230 V 40-60 Hz AC
protection IP65
energized duty rating ED 100%

The valves' technical design is based on media and application requirements. This can lead to deviations from the general specifications shown on the data sheet with regards to the design, sealing materials and characteristics.

Product description

This type is a pneumatically actuated valve with 2 port connections and 2 switching positions. The V2 has been developed for hot gases up to 400°C. The special application of the V2 is found in hot gas filtration as well as in filter cleaning during the coal gasification process in coal-fired power stations. The special feature of the V2 is that it opens and closes extremely quickly in order to generate a pressure surge in the filter / pressure tank.

The V2 is characterized by a hermetic seal to the outside as well as an extremely wear resistant valve seat. The control is carried out via a direct mounted or external 5/2-way pilot valve. V2 valves are available in orifices from 15 to 80 mm and pressure ranges from 16, 40 up to 64 bar.


The valves can be equipped with many options such as alternative pilot valves, limit switches, mounting brackets, diverse plug connections such as M12x1 DESINA / VDMA.


  • depending on the nominal width, switching times between 50 and 100 ms
  • DN 15 to 80 mm; pressure stage up to PN 64
  • media temperature up to 400 °C
  • inductive limit switch for position “open” and “closed”
  • housing available in C22.8 nickel-coated or stainless steel
  • hermetically sealed against the atmosphere by means of metal bellows made of stainless steel


pilot valve

pilot valve
co-ax (threaded ports)
5/2-way-pilot, electro-pneumatic, G 1/8, p = 4 - 10 bar

limit switch

limit switch
M12x1, DC 10 - 60 V, AC 15 - 250 V, -25°C to +85°C

limit switch

limit switch
M12x1, DC 10 - 30 V, -25°C to +70°C

limit switch

limit switch

Special Valves