“Vessel require to order one spare set of P/V valve.
Working pressure 22KpA, vacum -3.5Kpa.
See details in attached file.
Please issue calibration certicate.
Pls be informed we need P/V for 200 mbar and -35 mbar
See serial number below
S.N. 2388-21564 2389-21523 2317-33477” NA NA.NA.NA