To install in the Manhole Cover or on the top of the Tanker.The exit side is connected with the rubber hose to the vapor recovery pipework. When the tanker is loading or unloading to control the vapor comes in or out the tanker.This is a very important component for the vapor recovery system.

 * Hardening Treatment

The whole valve body is passed a special hardening process to improve its service life.

 * Easy-Operation

Sequence control to control the current valve open to series control the next valve open.

 * High Quality

The stainless steel internal shaft parts ensures its corrosion resistance. 

 * Light Weight

The main body is made of aluminum alloy,it is more light and sturdy.

 * Tight Sealing

Effectively guarantees the tanker do not overflow after rollover.