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
546458
Basic valve LR-D-7-MIDI
The Festo part number 546458 is a Midi size industrial component belonging to the D series, featuring a directly controlled diaphragm regulator with a rotary knob actuator lock having a detent. It provides constant output pressure, primary pressure compensation, and secondary exhausting across an operating pressure range of 0 bar to 16 bar and a pressure regulation range of 0.5 bar to 7 bar. Designed for compressed air and inert gases within an operating temperature of 14 °F to 140 °F, this unit achieves a normal nominal flow rate of 346 cfm and supports front panel, in-line, or accessory mounting. Submit the exact part number, quantity, and application requirements to receive a formal 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
- 546458
- Data verification
- Manufacturer evidence reviewed
For a faster response, include quantity, condition, and delivery destination.
Exact part-number verificationTechnical properties are matched to 546458.
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
- Set up for G1/4
- Operating pressure
- 0 MPa...1.6 MPa | 0 bar...16 bar
- Pressure regulation range
- 0.5 bar...7 bar
- Max. pressure hysteresis
- 0.02 MPa | 0.2 bar | 2.9 psi
- Normal nominal ow rate (normalized to DIN 1343)
- 346 cfm
- 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
- 14 °F...140 °F
- Ambient temperature
- 14 °F...140 °F
- Product weight
- 23.1 oz
- Type of mounting
- Front panel mounting | In-line installation | With accessories
- Note on materials
- RoHS compliant
- Seals material
- NBR
- Housing material
- Die-cast zinc
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 546458. Final compatibility remains subject to the machine manufacturer’s requirements and complete application data.