When performing pressure safety valve testing with the Ralston Instruments FieldLab, it's important to use a hose or pipe that matches the pressure rating and flow requirements of the test. Typically, the following sizes are recommended:
- For pressure testing from 0-100 psi the Ralston Quick-test hose will work for PSVs and PRVs smaller than 1/2” NPT and hose runs shorter than 6 feet.
- For pressure testing 100 to 300 psi: Use a 1/4" (6 mm) or 3/8" (9 mm) hose or pipe. This size is sufficient for most low-pressure applications and provides adequate flow and stability.
- For pressure testing 300 to 1500 psi: A 3/8" (9 mm) or 1/2" (12 mm) hose or pipe is appropriate. This size helps maintain consistent pressure and avoids significant pressure drops.
- For high-pressure testing above 1500 psi: A 1/2" (12 mm) or larger hose or pipe may be required, depending on the specific pressure and flow requirements of the test. This ensures safety and accuracy during testing.
Always ensure that the hose or pipe is rated for the maximum pressure you plan to test and that it has appropriate fittings to connect securely to both the FieldLab and the pressure safety valve. Proper hose or pipe selection is crucial to maintain safety and achieve accurate test results. We recommend referring to the pipe sizing manual of the pressure safety valve manufacturer for the most accurate information.