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Festo
159581
Pressure regulator LR-1/2-D-MIDI
The Festo 159581 is a Midi size D series directly controlled diaphragm regulator providing constant output pressure with primary pressure compensation and secondary exhausting. Featuring a rotary knob with detent for actuator locking, an integrated pressure gauge, and a pressure regulation range of 0.5 bar to 12 bar at an operating pressure up to 16 bar, this component supports a normal nominal flow rate of 3500 l/min for compressed air or inert gases within a temperature range of -10 °C to 60 °C. It offers a maximum pressure hysteresis of 0.2 bar, moderate corrosion resistance class 2, and accommodates front panel mounting, in-line installation, or mounting with accessories at a product weight of 720 g. Submit the exact part number, quantity, and application requirements for a quote.
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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
- 159581
- Data verification
- Manufacturer evidence reviewed
For a faster response, include quantity, condition, and delivery destination.
Exact part-number verificationTechnical properties are matched to 159581.
Worldwide sourcingSupport for planned and urgent industrial requirements.
Manufacturer documentationA document is added when the reviewed source provides one.
Verified configuration
Technical Specifications
- Size
- Midi
- Series
- D
- Actuator lock
- Rotary knob with detent
- Mounting position
- Any
- Structural design
- Directly controlled diaphragm regulator
- Controller function
- Constant output pressure | With primary pressure compensation | With secondary exhausting
- Pressure gauge
- with pressure gauge
- Operating pressure
- 0 MPa...1.6 MPa | 0 bar...16 bar
- Pressure regulation range
- 0.5 bar...12 bar
- Max. pressure hysteresis
- 0.02 MPa | 0.2 bar | 2.9 psi
- Normal nominal ow rate (normalized to DIN 1343)
- 3500 l/min
- Operating medium
- Compressed air as per ISO 8573-1:2010 [7:4:4] | Inert gases
- 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 gases
- Temperature of medium
- -10 °C...60 °C
- Ambient temperature
- -10 °C...60 °C
- Product weight
- 720 g
- Type of mounting
- Front panel mounting | In-line installation | With accessories
- Pneumatic connection 1
- G1/2
- Pneumatic connection 2
- G1/2
- Note on materials
- RoHS compliant
- Material of sub-base
- Die-cast zinc
- 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 159581. Final compatibility remains subject to the machine manufacturer’s requirements and complete application data.