Part No.	Description	Large Diameter (mm)	Small Diameter (mm)	Max Pressure (PSI)
39159	Pressure Relief Valve	20	15	3.52

Replaces the pressure-gauge.

Fits all inflators and main valves.

NOTE: Has to be inserted between the inflatable boat and the air source.
Insert the pressure relief valve into the inflation/deflation valve & the surplus air will be released.