Wafer type soft seal butterfly valve
Product structures
The wafer butterfly valve uses stud bolts to connect the valve between two pipe flanges. It has a simple structure, small size and light weight, and consists of only a few parts. Moreover, it only needs to be rotated 90° to quickly open and close, which is simple to operate. At the same time, the valve has good fluid control characteristics. When the butterfly valve is in the fully open position, the thickness of the butterfly plate is the only resistance when the medium flows through the valve body. Therefore, the pressure drop generated by the valve is very small, so it has good flow control characteristics. Butterfly valves have two sealing types: elastic seal and metal seal. For elastic sealing valves, the sealing ring can be embedded in the valve body or attached to the periphery of the butterfly plate.
product advantages
Explosion-proof pin design
It adopts explosion-proof pin design
Valve seat embedded design
The valve seat has a backless design and light torque, making it convenient for users to replace the valve seat by themselves.
Self-lubricating design
The butterfly valve is designed with a self-lubricating ring with friction coefficient on the valve stem. It can greatly reduce the friction of valve opening and closing.
product details
Precautions
The valve should be stored in a dry, ventilated room, and the valve passage should be blocked at both ends.
Valves stored for a long time should be inspected regularly to remove dirt. Special attention should be paid to the cleaning of the sealing surface to prevent damage to the sealing surface.
Before installation, you should carefully check whether the valve mark is consistent with the usage requirements.
The valve channel and sealing surface should be checked before installation. If there is dirt, wipe it clean with a cleaning cloth.
Before installation, check whether the packing is tight and ensure the sealing of the packing. At the same time, it should not hinder the rotation of the valve stem.
The tightening force of the connecting bolts should be even and appropriate during installation.
This butterfly valve can be installed on horizontal and vertical pipelines. The installation position should ensure easy use, maintenance and replacement.
When opening or closing a manual valve, the handle should be used to open and close the valve, and no auxiliary lever or other tools should be used.
The valve should be inspected regularly during use to check whether the sealing surface is worn and whether the gasket packing is present. If it is damaged and fails, it should be repaired or replaced in time.
Scope of application
Butterfly valves are not only widely used in general industries such as petroleum, gas, chemical industry, and water treatment, but are also used in the cooling water system of thermal power stations.
Used in gas pipelines in the sulfuric acid industry: furnace blower entrances and exits, relay fan entrances and exits, electric defogger series and connecting valves, S02 main blower entrances and exits, converter adjustment, preheater entrances and exits, etc. to adjust and cut off the gas volume.
It is used in the sulfur burning, conversion, and dry suction sections of the sulfur acid production system. It is the preferred brand of valves for sulfur acid production equipment. It is considered by the majority of users to have good sealing performance, light operation, secondary corrosion, high temperature resistance, and easy operation. Flexible, safe and reliable butterfly valves have been widely promoted and used.
Lug-type butterfly valves are also widely used in: SO2, steam, air, coal gas, ammonia, CO2 gas, oil, water, brine, alkali, seawater, nitric acid, hydrochloric acid in chemical, petrochemical, smelting, pharmaceutical, food and other industries. It is used as a regulating and intercepting device on pipelines for media such as sulfuric acid and phosphoric acid.
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