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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.
Global industrial sourcing · Houston, Texas info@mropartsrfq.com
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Festo
527690
Pressure regulator MS4-LR
The Festo size 4 industrial component from the MS series is a pressure regulator featuring a pressure gauge, constant output pressure controller function with secondary exhausting and return flow characteristic, and a pressure regulation range of 0.3 bar to 12 bar across an operating pressure of 0.8 bar to 14 bar. This pressure regulator includes a rotary knob with detent, integrated lock, or accessory closure capability, supports any mounting position, and delivers a normal nominal flow rate between 1000 l/min and 2200 l/min with a maximum pressure hysteresis of 0.25 bar. Certified as c UL us recognized with ATEX and UKEX explosion protection compliance for Zone 1, Zone 2, Zone 21, and Zone 22, the unit is rated for II 2G gas and II 2D dust categories with Ex h IIC T6 Gb X and Ex h IIIC T60°C Db X ignition protection. Submit the exact part number, quantity, and application requirements to receive a formal quotation.
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Request a QuoteWhy no listed price?
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
- 527690
- Data verification
- Manufacturer evidence reviewed
For a faster response, include quantity, condition, and delivery destination.
Exact part-number verificationTechnical properties are matched to 527690.
Worldwide sourcingSupport for planned and urgent industrial requirements.
Manufacturer documentationA document is added when the reviewed source provides one.
Verified configuration
Technical Specifications
- Size
- 4
- Series
- MS
- Actuator lock
- Rotary knob with detent | Rotary knob with integrated lock | can be closed with accessories
- Mounting position
- Any
- Structural design
- Pressure regulator with pressure gauge
- Controller function
- Constant output pressure | With secondary exhausting | With return ow characteristic
- Pressure gauge
- Set up for G1/4 | Set up for G1/8 | With pressure sensor | with pressure gauge
- Operating pressure
- 0.08 MPa...1.4 MPa | 0.8 bar...14 bar
- Pressure regulation range
- 0.3 bar...12 bar
- Max. pressure hysteresis
- 0.025 MPa | 0.25 bar | 3.625 psi
- Normal nominal ow rate (normalized to DIN 1343)
- 1000 l/min...2200 l/min
- Certication
- c UL us - recognized (OL)
- CE marking (see declaration of conformity)
- as per EU explosion protection directive (ATEX)
- UKCA marking (see declaration of conformity)
- acc. to UK EX instructions
- Explosion protection certication outside the EU
- EPL Db (GB) | EPL Gb (GB)
- Explosion prevention and protection
- Zone 1 (ATEX) | Zone 1 (UKEX) | Zone 2 (ATEX) | Zone 21 (ATEX) | Zone 21 (UKEX) | Zone 22 (ATEX)
- ATEX category gas
- II 2G
- ATEX category for dust
- II 2D
- Type of ignition protection for gas
- Ex h IIC T6 Gb X
- Type of (ignition) protection for dust
- Ex h IIIC T60°C Db X
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 527690. Final compatibility remains subject to the machine manufacturer’s requirements and complete application data.