lncorporated in all standard manhole covers, and available separately with rain cap, the 2"High Flow Pressure and Vacuum Vent Valve provides breathing for petroleum product tankers.
Aerodynamic porting facilitates extremely high throughput.
Mandatory roll over seal off, as required by the U.K. Health and Safety Executive, is included. This feature has proven its effectiveness many times in tanker rollover accidents where it has protected lives, prevented dangerous and costly spillage and prevented pollution.
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