WHEN refacing the valve seats of an automobile engine, it is usually the practice to make a reamer out of cast steel and temper and grind it to she. This is rather a tedious task and somewhat ...

The time-honored process involves placing some valve lapping compound on the valve, seating the valve into the valve seat, and spinning a wooden stick in between the palms of your hands as quickly ...

This committee will be responsible to develop a standard to describe various seat leakage specifications for cryogenic control valves. This standard will establish optional cryogenic seat leakage ...