NC No.9 PISTON TYPE BREATHER VALUE

BVN-1 Type – PISTON TYPE –
BVN-1-80 to 250

BVN-6 Type – BY-PASS TYPE –
BVN-6-250 to 650

-Function

This device is installed on the cargo oil tank of an oil tanker, to keep the pressure in the tank stable, and to protect the cargo oil tank from damages caused by overpressures or under-pressures. Additionally, the device is a valve for reducing the vaporization loss of the cargo oil.