These capillary-type calibrated leaks use our proprietary Positive Shut-Off (PSO) valves to provide instant on-off operation with essentially no dead volume. This eliminates any gas burst when the valve is opened. The valve’s dead volume is only 0.0001 cc compared to as much as 1 cc or more in some valves. The PSO-
valve Leaks also minimize gas depletion rates and provide longer life even at high flow rates. Their leak-rate control element is a crimped stainless steel capillary suitable for use with all gases.
The unique features of these proprietary PSO Calibrated Leaks result in their use in a wide variety of
applications. They are extensively used for verification tests and calibration of Leak Testing Systems,
usually with automated valve operation and usually with an external gas source rather than a
reservoir. They are also used frequently to flow gas at a controlled rate into a process chamber or
research apparatus, or to “dope” another gas stream. For mass spectrometer analysis of gases that
are at high pressures, the PSO-valve Leaks are used to reduce the pressure and provide a sample
rapidly with no gas burst.
1511 Bethlehem Rd. Allen,Tx. 75002
Office & Facility:
12058 S Profit Row, Forney, Tx 75126
USA: +1 469 656 4393
From Mexico: 001 469 656 4393
SKYPE : alytaic