You are looking at a brand new Vacuum Control Regulator Pressure Relieve Valve for milkers, milking systems, or other Vacuum Systems to Control the pressure. FEATURES: Adjustable Range: 8 to 29 inch Hg; Can be added to the milking vacuum line to control the vacuum level for pulsator Tube Connection Size: 5/8 " ID. Physical size: 2 5/8"X 2 5/8" X 5" Weight:ABOUT 12 OZ Optional: packed with a vacuum gauge for different ways of connection and sizes: look for models: VGRK, VGRKa, VGRKb, VRBT at www.viot.us Add a map to your own listings. FREE Trial!