Festo HE-3-1/4-QS-8 Pneumatic Shut-off Valve

Selling Points

1The HE-3-1/4-QS-8 features a standard nominal flow rate of 423.9 liters per minute, making it suitable for high-demand applications.
2This valve offers direct mounting via through-hole or thread, providing flexibility in installation.
3Built with PBT-reinforced housing and NBR seals, the HE-3-1/4-QS-8 ensures durability and resistance to moderate corrosion stress.
4It operates within a pressure range of 0.95 to 10 bar and an ambient temperature range of 0 to 60°C, making it versatile for various environments.
5The valve is designed for lubricated operation, which enhances its performance and longevity, and it also meets cleanroom class 4 according to ISO 14644-1.

Detailed engineering parameters based on manufacturer documentation

Parameter	Value	Parameter	Value
Valve function	3/2, bistable	Selection of additional function	with exhaust function
Pneumatic connection 1	R1/4	Pneumatic connection 2	QS-8
Actuation type	Manual	Type of mounting	Optionally: Direct mounting via through-hole Direct fastening via thread
Standard nominal flow rate	423.9l/min	Nominal width	3.5mm
Operating pressure	-0.95bar 10bar	Ambient temperature	0°C 60°C
Housing material	PBT-reinforced	Operating medium	Compressed air as per ISO 8573-1:2010 [7:-:-]
Exhaust air function	Without flow control option	Sealing principle	Soft
Mounting position	Any	Structural design	Piston gate valve
Type of control	Direct	Flow direction	Non-reversible
Symbol	00997329	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
Cleanroom class	Class 4 according to ISO 14644-1	Temperature of medium	0°C 60°C
Product weight	36g	Pneumatic connection 3	Not ducted
Material of screwed plug	Brass, nickel-plated	Note on materials	RoHS-compliant
Seals material	NBR	Manufacturer ID	153480

Specifications may be subject to change without notice