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Products/Festo/8203865
Festo 8203865 Pressure regulator MS9-LR-G-PI10-VS
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Festo

8203865

Pressure regulator MS9-LR-G-PI10-VS

The Festo Size 9 pilot-controlled piston control valve from the MS series features constant output pressure with primary pressure compensation and secondary exhausting, operating within a pressure regulation range of 0.1 bar to 10 bar at an operating pressure of 6 bar to 11 bar. This component operates on a nominal DC voltage of 24 V (with a DC operating voltage range of 21.6 V to 26.4 V, 10% residual ripple, max. 4.2 W power consumption, and max. 0.16 A current consumption) controlled via a 4-20 mA analog input signal, supporting compressed air per ISO 8573-1:2010 [7:4:4] or inert gases without oil lubrication. Built with a maximum pressure hysteresis of 0.05 bar, CRC 2 moderate corrosion resistance, VDMA24364-B1/B2-L LABS conformity, and ISO 14644-1 Class 7 cleanroom suitability for any mounting position within a -10 °C to 60 °C storage temperature range. Submit the exact part number, quantity, and application requirements to request 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
8203865
Data verification
Manufacturer evidence reviewed

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Verified configuration

Technical Specifications

Size
9
Series
MS
Mounting position
Any
Structural design
Pilot-controlled piston control valve
Controller function
Constant output pressure | With primary pressure compensation | With secondary exhausting
Operating pressure
6 bar...11 bar
Pressure regulation range
0.1 bar...10 bar
Max. pressure hysteresis
0.05 bar
DC operating voltage range
21.6 V...26.4 V
Max. electrical power consumption
4.2 W
Max. current consumption
0.16 A
Nominal operating voltage DC
24 V
Residual ripple
10%
Analog input signal range
4 - 20 mA
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 not possible
Corrosion resistance class (CRC)
2 - Moderate corrosion stress
LABS (PWIS) conformity
VDMA24364-B1/B2-L
Cleanroom suitability, measured according to ISO 14644-14
Class 7 according to ISO 14644-1
Storage temperature
-10 °C...60 °C
Temperature of medium
10 °C...50 °C
Ambient temperature
0 °C...60 °C
Product weight
1400 g
Type of mounting
Alternatively: | In-line installation | With accessories
Covering material
PA-reinforced
Note on materials
RoHS compliant
Material of sub-base
Die-cast aluminum
Material of mounting bracket
Die-cast aluminum

Engineering context

Identification and RFQ Guidance

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.

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 8203865. Final compatibility remains subject to the machine manufacturer’s requirements and complete application data.