High velocity pressure vacuum valves provides automatic control of pressure differentials during cargo loading/unloading, ballasting, or thermal variations and gas freeing purpose on tanks.
General Description
IMO MSC/Circ. 677/1009, IMO.MSC.1/Circ.1324
ISO 15364:2000
STRONG STABILITY
NON-HAMMERING
NON-OSCILLATING
N.D50mm ~ 250mm
JIS, ANSI, DIN etc FLANGE
WEIGHT LOADED TYPE
The purpose of High velocity pressure vacuum valves is designed to prevent the flame passage into cargo tanks and to relieve excessive over pressure or under vacuum of cargo tanks during cargo loading, discharging, ballasting and thermal variations.
Also, our valve could be used to device for gas freeing of cargo tanks and for preventing penetration of sea water into water ballast tanks during valve and deck are submerged under seawater level due to vessels rolling, pitching and stranding in case of installation on ballast tank.