Our main products include the Unloading Anti-over flow valve, which is installed in the DN100 riser of the underground storage tank and connected to the remote discharge port. When the oil level in the tank rises to within 200mm from the top of the tank, the HH61SOR main valve closes to prevent accidental or intentional overflow. After the main valve is closed, the accumulated oil in the discharge hose can only be drained through a bypass valve at a rate of 12-20 l/min until the level rises to within 76 mm from the top of the tank. Bottom valve for connecting tubing and oil tank, and can filter fuel, and can check. For unloading port of all kinds of ball valve and one-way ball valve three way ball valve pneumatic ball valve. Zgb-1 corrugated flame arrester is used for installing important safety equipment on fixed roof storage tanks such as crude oil, gasoline, kerosene, diesel oil, etc. Its function is to allow flammable and explosive gases through, for the flame to prevent suffocation. Mounting size :DN50. All-weather fire retardant breathing valve is used to install important safety equipment on fixed top storage tank, such as crude oil, gasoline, kerosene, diesel oil, to reduce the evaporation loss of oil in the tank and protect the tank from damage when overpressure or vacuum, usually used with flame arrester. Mounting size :DN50 /DN80. Ethanol gasoline dryer is light in structure, light in weight and fast in installation. It is an important equipment for gasoline station to add ethanol to dry water. It can effectively prevent water from entering the tank, reduce the chance of contact between water and ethanol, and make the car start slowly and climb up the hill boring phenomenon will be overcome. Mounting diameter: DN50, flange, thread and other connection methods. Installed on the manhole cover or tank top, used for adding a dipstick to measure the oil level in the tank, and good sealing, anti-leakage. Mounting size: DN100/DN150. Double closed metering hole is a new product of metering hole, ball valve and one-body. It is an anti-theft device installed at the metering port of gas station oil tank. The main function is to seal the metering hole of oil tank, which has the function of anti-theft, anti-prying and anti-oil and gas leakage. Mounting size: DN100. It is installed on the manhole cover of the oil tank, the rotating cover of translation, and the common padlock is added when no measurement is made. The flange of the oil hole is connected by hexagon bolt, which has strong sealing performance and prevents oil and gas leakage. The integral casting, anti-theft and anti-skid structure design, has good anti-theft effect. Nominal diameter: DN100 Pressure range: 0.6-1.0mpa Locking mode: double lock. Safety valve is designed for oil tank, chemical tank and other tank products. Different opening pressure can be set according to user requirements. The main body is made of stainless steel, with corrosion resistance, high temperature resistance, strong sealing and other characteristics, suitable for various environments. Fire retardant breathable cap mounted on the air outlet, available in metal and plastic. All kinds of quick connectors, TYPE C, D, E, F, DC, DP, femal-male coupler,Double Female coupler,Double male coupler, flange Female coupler, flange male coupler, Reducing Coupler, FEMALE,A, B. Electrostatic grounding alarm: used in gas stations to export static electricity to prevent accidents caused by excessive static electricity. Certificate Number: CNEx 15.1793 Filter NET/Triangle Flange/Bellow