müller coax group

3/2 Way coaxial Externally Controlled Valves

The 3/2-way externally controlled valves are pneumatically or hydraulically operated valves with three connections and two switching positions. The actuation of these valves are usually via the attached 5/2-way valve or an existing valve terminal.

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SIL3 Safety Integrity Level DIN EN 61508

Switching times can be set as required using fine throttles on the pilot valve. Switching delays of up to three seconds when opening and closing are possible. This prevents hydraulic pressure surges in pipeline systems. Due to the unique coaxial design, most valves already work from 3 bar control air pressure, whereby the air consumption per stroke is sometimes only 1/10 of the value of products from well-known competitors. By using the coax valves, the consumption of expensive compressor air is minimized; this makes these valves particularly energy-efficient.

Due to the very high switching force, the externally controlled valves can be equipped with additional dirt wipers. They are optionally also ideally suited for the use of sticky or abrasive media such as ceramic slip, glue, paste, paint, or grinding emulsion/oil.

Valves of this series can be used in ATEX zone 1/category 2.

The externally controlled valves are available in a nominal width of 8 to 250 mm. The pressure range extends from vacuum to 100 bar medium pressure. The tightness of the valve seat is guaranteed with the control air or hydraulics switched on up to the full pressure stage, in accordance with DIN 12266 - regardless of whether the valves are operated in the preferred or the opposite direction. When control air or hydraulics are switched off, the seat tightness in the opposite direction is a maximum of 16 bar. The technical details can be found in the respective data sheets. The bandwidth of the flow factor (KV value) ranges from 2.5 to 650 m³/h. Depending on the nominal size, the valves are available in sleeves, flanges, or special designs.

Options

The valves can be optionally equipped e.g. with alternative pilot valves, limit switches, mounting brackets, or various plug connections such as M12x1 DESINA/VDMA.

Overview technical data 3/2 Way coaxial Externally Controlled Valves

co-ax type orifice connection max. pressure range Kv value
VMK 10 DR
10 mm thread 0 - 100 bar 2,5 m³/h
VMK / VFK 15 DR
15 mm thread
flange
0 - 100 bar 5,6 m³/h
VMK / VFK 20 DR
20 mm thread
flange
0 - 100 bar 8,3 m³/h
VMK / VFK 25 DR
25 mm thread
flange
0 - 100 bar 13,3 m³/h
VMK / VFK 32 DR
32 mm thread
flange
0 - 100 bar 18,9 m³/h
VMK / VFK 40 DR
40 mm thread
flange
0 - 100 bar 31 m³/h
VMK / VFK 50 DR
50 mm thread
flange
0 - 100 bar 43 m³/h
VSV-M / VSV-F 40 DR
40 mm thread
flange
0 - 40 bar 29,1 m³/h
VSV-M / VSV-F 50 DR
50 mm thread
flange
0 - 40 bar 43 m³/h
VSV-F 65 DR
65 mm flange 0 - 40 bar 68 m³/h
VSV-F 80 DR
80 mm flange 0 - 40 bar 90 m³/h
VSV-F 100 DR
100 mm flange 0 - 40 bar 140 m³/h
VSV-F 125 DR
125 mm flange 0 - 16 bar 198 m³/h
VSV-F 150 DR
150 mm flange 0 - 16 bar 274 m³/h