Marshalsea Hydraulics



Test procedure
Type 14470 integrated check/thermal relief valve




 Each valve is tested by Marshalsea Hydraulics and issued with a unique serial number prior to dispatch. The following describes the testing procedure.

1 Ensure compliance with internal procedure – safe system of work for manual test rigs.
2 Visually examine for external defects, damaged threads, etc.
3 Connect to the test rig as shown.
 
4 Unscrew adjuster to minimum setting.
5 Raise pressure until valve functions – note performance of reseat. Repeat in increments of 2,000 PSI to the valve’s upper limit. Reseat must remain within 5% of cracking pressure at all times. Valves that fail to reseat within 5% are to be reworked.
6 Hold on pressure for approximately 2 minutes. Check for pressure decay and leakage.
7 Remove from test rig and immediately plug both ports.
8 Ensure that Test Certificate log is completed and mark valve with the information contained on the production documentation. Affix CE mark.
9 Pass to inspection.