Confirm the exact configuration
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
190901
Differential pressure valve LRL-3/8-NPT-QS-1/2-U
The Festo 190901 is an industrial component featuring a differential pressure, constant controller function and two QS-1/2 pneumatic connections for threaded mounting. Built with a reinforced PBT housing, a brass threaded plug, and weighing 76 g, it operates with compressed air in accordance with ISO 8573-1:2010 [7:-:-] across an ambient temperature range of 0 to 60 °C, supporting supply pressures from 0 to 0.9 MPa (0 to 9 bar / 0 to 130.5 psi) in any assembly position. This RoHS-compliant unit conforms to VDMA24364-B1/B2-L PWIS standards and permits lubricated operation, though it is subsequently required for further operation. Submit the exact part number, quantity, and application requirements to receive a quote.
Request pricing and availabilityCommercial response for your destination and required quantity.
Request a Quote- Manufacturer
- Festo
- Part number
- 190901
- Data verification
- Manufacturer evidence reviewed
For a faster response, include quantity, condition, and delivery destination.
Exact part-number verificationTechnical properties are matched to 190901.
Worldwide sourcingSupport for planned and urgent industrial requirements.
Manufacturer documentationA document is added when the reviewed source provides one.
Verified configuration
Technical Specifications
- Controller function
- Differential pressure, constant
- Pneumatic connection, port
- 2 QS-1/2
- Mounting type
- Threaded
- Supply pressure 1 MPa
- 0 ... 0.9 MPa
- Inlet pressure 1
- 0 ... 9 bar
- Supply pressure 1 psi
- 0 ... 130.5 psi
- Ambient temperature
- 0 ... 60 °C
- Material housing
- PBT-reinforced
- Operating medium
- Compressed air in accordance with ISO8573-1:2010 [7:-:-]
- Assembly position
- Any
- Note on operating and pilot medium
- Lubricated operation possible (subsequently required for further | operation)
- PWIS conformity
- VDMA24364-B1/B2-L
- Product weight
- 76 g
- Material of threaded plug
- Brass
- Materials note
- Conforms to RoHS
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 190901. Final compatibility remains subject to the machine manufacturer’s requirements and complete application data.