FESTO - HEL-D switch-on valve - pneumatic - various sizes - G 1/8 to G 1 - price per piece

(Exemplary presentation)
Product Description
  • Pneumatically operated shut-off valve (HEL-D) for safe venting and de-pressurising of pneumatic systems during start-up and shutdown processes – ideal for automated systems with high safety requirements.
Description
  • HEL-D switch-on valves are pneumatically controlled 3/2-way valves that are closed in the idle state and build up system pressure when activated, while venting when switched off.
  • Spring-centred reset and a metal, corrosion-resistant design ensure high reliability and durability.
  • They are available in mini, midi and maxi sizes with different connection threads (G 1/8" to G 1"), enabling flexible integration into various pneumatic systems.
  • Typical applications include production lines, automation and safety systems where controlled pressure build-up is essential.
Technical Data
  • Exhaust air function – throttleable
  • Actuation type - pneumatic
  • Sealing principle – soft
  • Installation position – any
  • Manual override - none
  • Design structure – piston slide valve
  • Reset type - mechanical spring
  • Control type – direct
  • Flow direction – non-reversible
  • Valve function – 2/2 closed monostable
  • Operating pressure - 3 bar to 16 bar
  • Operating medium – compressed air in accordance with ISO 8573-1:2010 [7:4:4], inert gases
  • Note on operating/control medium - Gel operation possible (required for further operation)
  • Corrosion resistance class KBK - 2 - moderate corrosion stress
  • LABS compliance – VDMA24364-B1/B2-L
  • Air purity class at the outlet – compressed air according to ISO 8573-1:2010 [7:4:4], inert gases
  • Medium and ambient temperature - -10 °C to 60 °C
  • Mounting type - Pipe installation
  • Material note – RoHS compliant
  • Seal material – NBR
  • Housing material – die-cast aluminium
  • Price per item
Versions: (10)
Narrow down your selection
Design
Connection thread
C value [l/sbar]
b-value
Normal nominal flow rate [litres per minute]
Anzeigen als list Table
Item No.: 854401697900
Type
DesignMINI
Connection threadG 1/8
C value [l/sbar]4.5
b-value0.46
Normal nominal flow rate [litres per minute]1000
94,79
Price incl. VAT
plus 29,00 shipping costs
Delivery time 2 - 4 working days
Item No.: 854401697800
Type
DesignMINI
Connection threadG 1/4
C value [l/sbar]7.1
b-value0.41
Normal nominal flow rate [litres per minute]1500
94,79
Price incl. VAT
plus 29,00 shipping costs
Delivery time 2 - 4 working days
Item No.: 854401698300
Type
DesignMINI
Connection threadG 3/8
C value [l/sbar]7.6
b-value0.3
Normal nominal flow rate [litres per minute]1600
94,79
Price incl. VAT
plus 29,00 shipping costs
Delivery time 2 - 4 working days
Item No.: 854401697700
Type
DesignMIDI
Connection threadG 1/4
C value [l/sbar]9
b-value0.59
Normal nominal flow rate [litres per minute]2600
125,81
Price incl. VAT
plus 29,00 shipping costs
Delivery time 2 - 4 working days
Item No.: 854401698200
Type
DesignMIDI
Connection threadG 3/8
C value [l/sbar]16.5
b-value0.39
Normal nominal flow rate [litres per minute]3200
125,81
Price incl. VAT
plus 29,00 shipping costs
Delivery time 2 - 4 working days
Item No.: 854401697600
Type
DesignMIDI
Connection threadG 1/2
C value [l/sbar]19.8
b-value0.37
Normal nominal flow rate [litres per minute]3600
125,81
Price incl. VAT
plus 29,00 shipping costs
Delivery time 2 - 4 working days
Item No.: 854401698100
Type
DesignMIDI
Connection threadG 3/4
C value [l/sbar]20.5
b-value0.48
Normal nominal flow rate [litres per minute]3800
125,81
Price incl. VAT
plus 29,00 shipping costs
Delivery time 2 - 4 working days
Item No.: 854401697500
Type
DesignMAXI
Connection threadG 1/2
C value [l/sbar]26.9
b-value0.36
Normal nominal flow rate [litres per minute]5600
161,74
Price incl. VAT
plus 29,00 shipping costs
Delivery time 2 - 4 working days
Item No.: 854401698000
Type
DesignMAXI
Connection threadG 3/4
C value [l/sbar]33.9
b-value0.38
Normal nominal flow rate [litres per minute]6000
161,74
Price incl. VAT
plus 29,00 shipping costs
Delivery time 2 - 4 working days
Item No.: 854401697400
Type
DesignMAXI
Connection threadG 1
C value [l/sbar]28.3
b-value0.54
Normal nominal flow rate [litres per minute]6500
161,74
Price incl. VAT
plus 29,00 shipping costs
Delivery time 2 - 4 working days
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