Interstate Pneumatics VS440 Pneumatic Hand Slide Valve 1/4 Inch FPT x 1/4 Inch MPT Length: 55mm (2.1 inch) | Outer Diameter: 26mm (1 inch) Fluid Type: Clean Air | Operating Method: Direct Action Type Pressure Range: 0-150 PSI | Temperature Range: 20 F -150 F Maximum Pressure Rating: 225 PSI | Lubrication: Not Required Service Life: &gt;1 Million