Automatic back to the water valve operation rules and troubleshooting solutions

Automatic back to the water valve itself has a buffer performance, under normal circumstances, the effect is very good, but because of some of the more complex pipeline, but also a very small number of water hammer phenomenon. Automatic backwater valve is a kind of opening and closing valve installed in the boiler backwater system tube, mainly to solve the existing boiler backwater manually opening and closing valve can not be opened and closed with the boiler circulating pump, often caused Boiler overflow problem and design. The main method is to set a piston shaft in the valve body, an upper end of the shaft is connected with the piston, a lower end of the piston is connected with a conical valve, and a pressure spring is arranged under the conical valve. When the boiler circulating pump works, the piston moves downward by the pressure of hot water, the conical valve opens, the water pump loses pressure when the pump stops, and the conical valve rises to close the valve, thus fundamentally solving the problem of boiler overflow.

Prepainted Steel Coil

PPGI/PPGL(prepainted galvanized steel /prepainted galvalume steel )is also known as pre-coated steel,color coated steel, coil coated steel, color coated steel,pre pianted steel sheet,The PPGI steel coil/sheet made of cold-rolled steel sheet and galvanized steel sheet, subjected to surface pretreatment (degreasing, cleaning, chemical conversion treatment), coated in a continuous manner, and baked and cooled to form a product. Coated steel has light weight, beautiful appearance and good anti-corrosion performance, and can be directly processed.

Color coated steel coil is mainly divided into three parts: construction, household appliances and transportation. Building is generally used to build the roof, wall and door of industrial and commercial buildings such as steel structure workshop, airport,warehouse and freezer. Household appliances are used in the production of refrigerators and large air conditioning systems, freezers, toasters, furniture, etc. Transportation industry is mainly used for oil pan, automobile interior parts, etc.

PPGI is a product made of cold-rolled steel coil and (aluminum) Galvanized Steel Coil after surface chemical treatment, coating (roll coating) or composite organic film (PVC film, etc.), and then baking and curing. This product is produced by the manufacturer in coils on the continuous production line, so it is also called prepainted steel coil. It not only has the properties of high mechanical strength and easy forming of steel materials, but also has good decoration and corrosion resistance of coating materials.

Prepainted Steel Coil,Corrugated Galvanized Steel,Color Prepainted Steel Coil,Zinc Corrugated Galvanized Steel

Shandong Guanzhou Iron and Steel Group Co., Ltd. , https://www.guanzhousteel.com