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