Product descriptions from the supplier Pneumatic one way flow control valve for speed regulation G1 4 inch thread port with 8 mm push in fitting 0.1 to 10 bar operating pressure suitable for compressed air systems Knob adjustable flow with lock function for stable control Durable zinc plated body and NBR seals for long service life 100% new & original, factory-tested with 1-year warranty Compact design ideal for automation equipment and pneumatic circuits About this supplier