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Use the manufacturer part number and model code—not appearance alone. Connection, size, material, voltage, pressure, seal, and control options can differ within the same product family.
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Festo
153991
Shut-off valve HE-2-3/8-QS-3/8-U
This Festo 153991 is a directly controlled 2/2-way bistable piston gate valve featuring a 3/8 NPT pneumatic connection 1, a QS-3/8 pneumatic connection 2, and manual actuation with a reversible flow direction. Constructed with a reinforced PBT housing, a soft sealing principle, and a nominal width of 4.6 mm, the component achieves a normal nominal flow rate of 744.3 l/min across an operating pressure range of -0.095 MPa to 1 MPa. It supports any mounting position via through-hole or thread, operates within an ambient temperature range of 0 °C to 60 °C with compressed air per ISO 8573-1:2010 [7:-:-], and meets ISO 14644-1 Class 4 cleanroom suitability alongside CRC 2 moderate corrosion stress resistance. Submit the exact part number, quantity, and application requirements to receive a formal quotation.
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Industrial and obsolete parts are priced per enquiry: the final price depends on available stock, condition, quantity, and your delivery destination, so a fixed list price would be misleading. Request a quote and we confirm current pricing, lead time, and sourcing options — including hard-to-find and discontinued Festo references — within one business day.
- Manufacturer
- Festo
- Part number
- 153991
- Data verification
- Manufacturer evidence reviewed
For a faster response, include quantity, condition, and delivery destination.
Exact part-number verificationTechnical properties are matched to 153991.
Worldwide sourcingSupport for planned and urgent industrial requirements.
Manufacturer documentationA document is added when the reviewed source provides one.
Verified configuration
Technical Specifications
- Valve function
- 2/2-way, bistable
- Pneumatic connection 1
- 3/8 NPT
- Pneumatic connection 2
- QS-3/8
- Actuation type
- Manual
- Type of mounting
- Alternatively: | Direct mounting via through-hole | Direct fastening via thread
- Normal nominal ow rate (normalized to DIN 1343)
- 744.3 l/min
- Nominal width
- 4.6 mm
- Operating pressure
- -0.095 MPa...1 MPa | -0.95 bar...10 bar
- Ambient temperature
- 0 °C...60 °C
- Housing material
- PBT-reinforced
- Operating medium
- Compressed air as per ISO 8573-1:2010 [7:-:-]
- Sealing principle
- Soft
- Mounting position
- Any
- Structural design
- Piston gate valve
- Type of control
- directly
- Flow direction
- Reversible
- 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 suitability, measured according to ISO 14644-14
- Class 4 according to ISO 14644-1
- Temperature of medium
- 0 °C...60 °C
- Product weight
- 62 g
- Material of screwed plug
- Brass, nickel-plated
- Note on materials
- RoHS compliant
- Seals material
- NBR
Engineering context
Identification and RFQ Guidance
What to include in your RFQ
Provide quantity, delivery country and ZIP/postal code, required condition, target date, and photographs of the existing nameplate when available.
Technical verification
Our sourcing response is prepared against Festo 153991. Final compatibility remains subject to the machine manufacturer’s requirements and complete application data.