Festo HEL-3/8-D-MINI Pneumatic Soft-Start Valve

Selling Points

1The Festo HEL-3/8-D-MINI is a 2/2-way pneumatic soft-start valve designed for gradual pressure build-up and exhaust control, ensuring precise control in pneumatic systems.
2This valve features a soft sealing principle, providing reliable and durable operation in various industrial settings.
3The HEL-3/8-D-MINI is available in different sizes (40 mm, 55 mm, and 66 mm) to accommodate various pneumatic system requirements.
4It supports multiple thread sizes (G1/8, G1/4, G3/8, 1/4 NPT, 3/8 NPT) for versatile connection options.
5The valve is designed for in-line installation and can be piloted directly, making it easy to integrate into existing pneumatic systems.

Detailed engineering parameters based on manufacturer documentation

Parameter	Value	Parameter	Value
Exhaust air function	With flow control option	Actuation type	Pneumatic
Sealing principle	Soft	Mounting position	Any
Manual override	None	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	0.3	C value	7.6l/sbar
Standard nominal flow rate	1600l/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	126g	Type of mounting	Line installation
Pneumatic connection 1	G3/8	Pneumatic connection 2	G3/8
Note on materials	RoHS-compliant	Seals material	NBR
Housing material	Die-cast aluminum	Manufacturer ID	165078

Specifications may be subject to change without notice