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.

Festo
The Festo 1635989 is a directly controlled piston regulator featuring a 3 mm nominal width for both pressurization and exhaust, operating as a 3-way proportional pressure control valve closed with a soft sealing principle. It delivers a pressure regulation range of 0.02 MPa to 2 MPa (0.2 bar to 20 bar) at a maximum operating pressure of 2 MPa (20 bar) and supports an inlet pressure up to 50 bar (5 MPa) with a maximum pressure hysteresis of 0.01 MPa (0.1 bar). Electrical actuation includes an LED display, reverse polarity protection for all connections, mechanical spring reset, and a safety function where outlet pressure drops to 0 bar if the power supply cable breaks. Submit the exact part number, quantity, and application requirements for a quote.
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.
For a faster response, include quantity, condition, and delivery destination.
Verified configuration
Engineering context
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.
Provide quantity, delivery country and ZIP/postal code, required condition, target date, and photographs of the existing nameplate when available.
Our sourcing response is prepared against Festo 1635989. Final compatibility remains subject to the machine manufacturer’s requirements and complete application data.