The oil unloading anti overflow valve is a two-stage closed anti overflow valve that actively cuts off oil input to prevent oil from overflowing the tank, polluting the environment, and causing danger. When the oil level reaches about 95% of the tank capacity, the mechanical device of the overflow valve is released and the oil discharge automatically closes. At this point, the flow rate passes through the diversion pipe to about 5 gallons per minute. Then, the tank operator can stop unloading oil, cut off and drain the unloading hose. Every time the fuel level exceeds 95% of the tank capacity, the oil discharge valve will automatically close. If the oil unloading does not stop and the oil exceeds 98% of the tank capacity, the diversion valve will close. Until the oil level drops below the reset point, no oil will flow into the tank. Features: Simple, convenient, and fast installation: No need for excavation or special manholes. Economic savings: The cost is a small fraction of other expensive, complex, and difficult to install valves. Fully equipped: Provide brand new upper and lower risers, installation tools, and complete manuals to reduce on-site work time. Fully automatic operation: No need to check the operation in advance, no need to reset, no interruption or abuse. It does not exert pressure on the fuel tank and is directly controlled by the oil level. You can use a dipstick to measure the oil level for quick improvement: suitable for new and old oil tanks equipped with 3 "/4" oil discharge risers. Quick emptying function, when the top pressure is released, the oil hose will automatically drain.

卸油防溢阀的优点:与完善的溢流报警系统自动控制相比，不需要依靠卸料机的警惕性和反应速度来保证防溢。根据EPA要求保持地下油罐顶部干燥:去掉因油喉接头松动和双层排空管要求造成的泄漏。无需依靠地下油罐内的压力停止卸载:减少了卸载时间和浅洒的危险。 快速卸油:油可以顺利进入油箱，直到液位达到关闭位置，油喉开始关闭功能。 安装简单、成本低:无论两点式还是同轴式卸油器，都不需要额外开挖、人力和排空管改造。 重要提示； 为了防止油从地下油罐中溢出，需要妥善维护卸油装置，保证快速接头的连接。应管理和培训卸载人员，以检查卸载弯管和软管的损坏和缺失部分。他们应始终确保快速连接器和软管之间的正确连接。如果卸油装置维护不当或弯头与快速接头连接不紧密，OPW61SO关闭时会发生严重溢流，造成危险和环境问题