Using Snap Cutters. 1  1. Use chalk to mark cut lines on the pipe. 2  2. Wrap the chain of the snap cutter around the pipe as evenly as possible. 3  3. Apply pressure onto the handles of the cutter so the wheels cut into the pipe.  4. Repeat these steps at all other chalk lines.
Reid vapor pressure (RVP) is a common measure of the volatility of gasoline. It is defined as the absolute vapor pressure exerted by a liquid at 100 Â°F (37.8 Â°C) as determined by the test method ASTM-D-323. The test method applies to volatile crude oil and volatile nonviscous petroleum liquids, except liquefied petroleum gases.
We need to know the vapor pressure of water at 22.0 Â°C and to do this we must look it up in a reference source. It is important to recognize the Ptotal is the 98.0 value. Ptotal is the combined pressure of the dry gas AND the water vapor. We want the water vapor's pressure OUT.