External P/V Vent Valve for Manhole Cover

P/V vent is installed on the top of the Tanker to ensure the safety when transportation. The design is according to the GB/T 18564.1-2006. High sensitivtity, when there is pressure differences inside and outside the tanker, it will automatically inlet or exhaust air to adjust the pressure it is suitable for diesel, gasoline and kerosene …

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