The gas tank breathing valve must have a pressure valve always open, and the breathing valve must be open during oil discharging operations. Normally it is always on.
The openings on the storage tank are divided into three categories: oil discharge port (must have a valve), oil measuring port (not necessarily with valve), vent (the tanks gasoline have pressure valves and ventilation valves). , diesel tanks have pressure valves and ventilation valves, diesel tanks have pressure valves and ventilation valves) No). You are probably asking about the valve located on the vent pipe located next to the oil tank.
Technical requirements
1. Please indicate whether the product you ordered is all-weather type (Q) or normal type (P) according to the declaration in the product manualt, and indicate the specifications of the required product.
2. The key parts of the product valve are made of polytetrafluoroethylene. During use, the positive and negative pressure valves cannot be opened at the same time. Therefore, avoid overturning the product and subjecting it to serious collisions during storage, transportation and installation.
3. The positive and negative sliding performance of the valve and the flame-retardant core of the product should be cleaned, dusted and inspected every six months. To ensure normal opening and flame retardant performance.
4. When ordering, please pay attention to the product name, model, specifications and specific specifications.