Festo HEL-1-D-MAXI-NPT: A high-performance pneumatic shut-off valve with soft-sealing and non-reversible flow direction, suitable for compressed air systems with oil lubrication.
Product Modelhel-1-d-maxi-npt
Material Number173923
Product ID5829
Stock on Request
Last updated: 8/29/2026
Key Features
1
Reliable OperationThe Festo HEL-1-D-MAXI-NPT ensures consistent performance with its soft-sealing principle, which provides a tight seal even under varying pressure conditions. This reliability is crucial for maintaining the integrity of your pneumatic system.
2
Non-Reversible Flow DirectionThe valve features a non-reversible flow direction, ensuring that air flows only in one direction. This characteristic is particularly useful in applications where backflow could cause issues or contamination.
3
Wide Operating Pressure RangeThe valve operates within a wide pressure range of 0.3 MPa to 1.6 MPa (3 bar to 16 bar), making it versatile for various industrial applications. This adaptability ensures that the valve can handle different system requirements without compromising performance.
4
Compressed Air CompatibilityDesigned to work with compressed air as per ISO 8573-1:2010 [7:4:4], the HEL-1-D-MAXI-NPT is suitable for use in environments where high-quality compressed air is essential. It also supports inert gases, expanding its application scope.
Technical Specifications
Detailed engineering parameters based on manufacturer documentation
Specifications may be subject to change without notice
Parameter
Value
Parameter
Value
Width dimension
65mm
Exhaust air function
With flow control option
Actuation type
Pneumatic
Sealing principle
Soft
Mounting position
Any
Manual override
None
5
Corrosion Resistance and ComplianceThe valve meets the corrosion resistance class (CRC) 2, indicating moderate corrosion stress. Additionally, it conforms to LABS (PWIS) and VDMA24364-B1/B2-L standards, ensuring compliance with industry regulations and standards. This level of compliance provides peace of mind in terms of product reliability and safety.
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
0.54
C value
28.3l/sbar
Standard nominal flow rate
6500l/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
