CAUTION: This portable gas pressure meter is designed to measure the pressure of inert-gas filled tanks from an on-deck position. However, the meter is a low- and delicate-pressure type and careful handling is required. The unit is not constructed to fit permanently on deck for water-tightness and durability. Therefore, it is recommended that it be removed from vapor control valves/tank gauging stations and stored in an appropriate place after each use.

Vapor Control Valves With Metric Flange Mountings and Other MMC Group Products

  • GVP Inert-Gas Pressure Meter
    Manufactured in Japan by MMC (Asia)
  • GVP-75
  • GVP-75A
  • GVP-75ANK

All other MMC gauging and measurement products detailed throughout this Web site can be used with the metric class vapor valves shown above. Compatibility of valve connection method is maintained in all equipment supplied by any of the MMC Group Companies. Compatibility of cargo gauging equipment includes strict attention to the originally installed “zero ullage” reference heights.

Important Valve Note: The external appearance of the vapor valves pictured above may vary from earlier versions of the same model.

Contact any of the MMC headquarters or sales locations for further information concerning the compatibility of equipment originally supplied by MMC or other gauging equipment manufacturers.

GVP Inert-Gas Pressure Meter

Inert gas pressure in a tank can easily be measured by fitting the appropriate model GVP portable pressure meter on an MMC vapor control valve/tank gauging station installed on the top of the tank. The GVP-75 series pressure meters feature a gas seal mechanism to prevent gas leakage from the tank. The meter’s screw-type orifice makes it secure from sudden pressure changes and a mesh filter at the inlet prevents the intake of dust.

Range: +2500 to -1000mm (water)
Accuracy: + or – 1.5% FS


For use with vapor control valve/tank gauging station models “B,” “MB,” “MBS,” “C” (series), “D-25,” “F-50” (series), and “S” (series).

For use with vapor control valve/tank gauging station (self-closing valve) models “G65K80” and “A.”

For use with vapor control valve/tank gauging station (self-closing valve) model “ANK-52.”

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