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 1635977 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 soft sealing and a mechanical spring reset method. It provides a pressure regulation range of 0.4 bar to 40 bar (0.04 MPa to 4 MPa) at an operating pressure up to 50 bar (5 MPa), incorporating reverse polarity protection across all electrical connections, an LED indicator display, 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 to request a quote for this component.
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 1635977. Final compatibility remains subject to the machine manufacturer’s requirements and complete application data.