ASCO

ASCO - Air controlled 1/4" or NAMUR G551A105

Air controlled slide valve for 1/4" connection or NAMUR. The 1/4" valve can be ordered in an environmental protection version, whereas it is standard with the NAMUR valve. Environmental protection means that all the internal parts of the valve are totally sealed against fluids, dust, corrosive substances etc. that may be present in the surroundings.

The 1/4" valve is ordered in 3/2 or 5/2 versions and can be single or manifold mounted for common supply. The NAMUR valve is delivered with two adapter plates as standard. The valve can then be adapted to 3/2 or 5/2 function by fitting the relevant plate.

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  • Function 3/2-5/2
  • Environmental protection version
  • High flow rate
  • Robust construction with aluminium housing

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Available in several variants

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Technical data

General Data

Function 3/2, Air-Controlled With Spring Return, Normally Closed
Connection G1/4
IP class IP65

Material Data

Material of seals NBR, PUR
Material internal parts Aluminium, POM, Stainless steel

Additional Data

Pressure max 10 bar
Approvals IEC, TÜV
Weight 0.43 kg
Type of valve Air controlled
Short circuit protection No
Pilot pressure max 10 bar
Temperature operational min -25 °C
Temperature operational max 60 °C
Connection air G1/8
Differential pressure max 10 bar
Differential pressure min 0 bar
Flow max 860 l/min
Manual operation No
Material of body Anodised aluminum
Mounting Independent
Pilot pressure min 2 bar

Measurements and connections

Technical illustrations

Product description

Air controlled slide valve for 1/4" connection or NAMUR. The 1/4" valve can be ordered in an environmental protection version, whereas it is standard with the NAMUR valve. Environmental protection means that all the internal parts of the valve are totally sealed against fluids, dust, corrosive substances etc. that may be present in the surroundings.

The 1/4" valve is ordered in 3/2 or 5/2 versions and can be single or manifold mounted for common supply. The NAMUR valve is delivered with two adapter plates as standard. The valve can then be adapted to 3/2 or 5/2 function by fitting the relevant plate.

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Parts Function Flow max Mounting Price
3/2, Air-Controlled With Spring Return, Normally Closed
860 l/min
Independent
3/2, air operated, Normally Closed
860 l/min
Independent
3/2-5/2, Air-Controlled With Spring Return, NAMUR, Normally Closed
700 l/min
NAMUR standard
3/2-5/2, air operated, NAMUR
700 l/min
NAMUR standard

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