The Festo HEL-3/4-D-MIDI-NPT on/off valve provides precise control for pneumatic systems. Featuring a soft sealing principle and optional mounting positions, it ensures reliable operation and easy integration.
Product Modelhel-3/4-d-midi-npt
Material Number
173921
Product ID5826
Stock on Request
Last updated: 8/29/2026
Key Features
1
Precise ControlThe Festo HEL-3/4-D-MIDI-NPT on/off valve offers precise control for pneumatic systems, ensuring that your operations run smoothly and efficiently.
2
Soft Sealing PrincipleEquipped with a soft sealing principle, this valve minimizes wear and tear, extending its lifespan and reducing maintenance needs.
3
Optional Mounting PositionsThe valve's optional mounting positions provide flexibility in installation, allowing for easy integration into various system configurations.
4
Reliable OperationDesigned with a mechanical spring type of reset, the valve ensures consistent performance and reliable operation under various conditions.
5
Technical Specifications
Detailed engineering parameters based on manufacturer documentation
Specifications may be subject to change without notice
Parameter
Value
Parameter
Value
Width dimension
55mm
Exhaust air function
With flow control option
Actuation type
Pneumatic
Sealing principle
Soft
Mounting position
Any
Manual override
None
Compliance and ConformityThe Festo HEL-3/4-D-MIDI-NPT valve meets VDMA24364-B1/B2-L LABS (PWIS) conformity standards, ensuring compliance with industry regulations and standards.
Structural design
Piston gate valve
Reset method
Mechanical spring
Type of control
Direct
Flow direction
Non-reversible
Symbol
00991513
Valve function
2/2, closed, monostable
Operating pressure
3bar 16bar
b-value
0.48
C value
20.5l/sbar
Standard nominal flow rate
3800l/min
Operating medium
Compressed air as per ISO 8573-1:2010 [7:4:4] Inert gas
Information on operating and pilot media
Operation with oil lubrication possible (required for further use)
Corrosion resistance class (CRC)
2 - Moderate corrosion stress
LABS (PWIS) conformity
VDMA24364-B1/B2-L
Air quality class at the output
Compressed air as per ISO 8573-1:2010 [7:4:4] Inert gas
Temperature of medium
-10°C 60°C
Ambient temperature
-10°C 60°C
Product weight
270g
Type of mounting
Line installation With accessories
Pneumatic connection 1
3/4 NPT
Pneumatic connection 2
3/4 NPT
Note on materials
RoHS-compliant
Seals material
NBR
Housing material
Die-cast aluminum
Manufacturer ID
173921
Festo HEL-3/4-D-MIDI-NPT On/Off Valve - Reliable Pneumatic Control | INDSLT
