It’s a small investment that will keep you from ... it holds the reading after you remove it from the tire, with an air pressure relief valve that doubles as a deflator, if a very slow one.

line going to the unloader valve, as shown in the photo here. Use slip-joint pliers or small pipe wrench to remove the ...

Alfa Laval has expanded its range of hygienic valves with the launch of the Unique SSV Pressure Relief Valve and the Leakage Detection Butterfly ...