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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.
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Festo
1635991
Proportional pressure control valve VPPL-3Q-3-Z-0L20H-A4-A-S1-4
The Festo 1635991 is a directly controlled piston regulator featuring a 3 mm nominal width for both pressurization and exhaust, operating via electrical actuation with a soft sealing principle and mechanical spring reset. This 3-way proportional pressure control valve closed offers an operating pressure of 2 MPa (20 bar), a pressure regulation range of 0.02 MPa to 2 MPa (0.2 bar to 20 bar), and an inlet pressure 1 of 0 bar to 50 bar (0 MPa to 5 MPa) with a max. pressure hysteresis of 0.01 MPa (0.1 bar, 1.45 psi). It includes an LED indicator display, reverse polarity protection for all electrical connections, no short-circuit protection, and a max. cable length of 30 m, while maintaining a safety position where a power supply cable break causes the outlet pressure to drop to 0 bar in any mounting position (preferably upright). Submit the exact part number, quantity, and application requirements for an RFQ 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
- 1635991
- Data verification
- Manufacturer evidence reviewed
For a faster response, include quantity, condition, and delivery destination.
Exact part-number verificationTechnical properties are matched to 1635991.
Worldwide sourcingSupport for planned and urgent industrial requirements.
Manufacturer documentationA document is added when the reviewed source provides one.
Verified configuration
Technical Specifications
- Nominal width pressurization
- 3 mm
- Exhaust nominal width
- 3 mm
- Actuation type
- Electrical
- Sealing principle
- Soft
- Mounting position
- Any | Preferably upright
- Structural design
- Directly controlled piston regulator
- Short-circuit protection
- No
- Max. cable length
- 30 m
- Safety instructions
- VPPL safety position: if the power supply cable breaks, the outlet | pressure will drop to 0 bar.
- Reverse polarity protection
- for all electrical connections
- Reset method
- Mechanical spring
- Type of control
- directly
- Valve function
- 3-way proportional pressure control valve closed
- Display type
- LED indicator
- Operating pressure
- 2 MPa | 20 bar
- Pressure regulation range MPa
- 0.02 MPa...2 MPa
- Pressure regulation range
- 0.2 bar...20 bar
- Inlet pressure 1
- 0 bar...50 bar
- Inlet pressure 1 MPa
- 0 MPa...5 MPa
- Max. pressure hysteresis
- 0.01 MPa | 0.1 bar | 1.45 psi
- b-value
- 0.25
- C value
- 0.8 l/sbar
- Normal nominal ow rate (normalized to DIN 1343)
- 245 l/min
- Standard nominal ow rate 2-3
- 282 l/min
- Switching time off
- 654 ms
- On switching time
- 428 ms
- DC operating voltage range
- 21.6 V...27.6 V
- Duty cycle
- 100%
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 1635991. Final compatibility remains subject to the machine manufacturer’s requirements and complete application data.