Views: 0 Author: Site Editor Publish Time: 2022-05-10 Origin: Site
A WRAS butterfly valve is a rotary valve that uses a disc as the closure member. The disc shaped closure member is rotated through 90 or there about to open or close the passage. The disc of WRAS butterfly valve closes against a ring seal to close off the flow. The other main parts are the WRAS butterfly valve body, the stem/ shaft and the valve actuator.
What is wrong with WRAS butterfly valve?
How to clean WRAS butterfly valve?
How to use WRAS butterfly valve?
WRAS butterfly valves leaks.
WRAS butterfly valve’s seat is covered in dirt or the valve stem and disk is rusted.
WRAS butterfly valve’s seal is damaged.
There is insufficient actuator movement in the WRAS butterfly valve.
WRAS butterfly valve cannot change direction or change direction slowly. This is generally caused by insufficient lubrication, stuck or damaged springs, and oil or impurities stuck in the sliding parts.
After long-term use of the WRAS butterfly valve, the valve core sealing ring is worn and the valve stem and seat are damaged.
The inlet and exhaust holes of the WRAS butterfly valve are blocked by sludge and other debris. The sealing function of WRAS butterfly valve is not tight. The movable iron core of WRAS butterfly valve is stuck.
According to the processing requirements, some parts of WRAS butterfly valve need to be polished, and the surface must not have processing burrs.
All parts of the WRAS butterfly valve are degreased.
Pickling passivation is carried out after degreasing, and the cleaning agent does not contain phosphorus.
Rinse with pure water after pickling and purification, and there should be no residues of chemicals. This step is omitted for carbon steel parts of WRAS butterfly valve.
Use non-woven cloth to dry the parts one by one. Do not leave the surface of the parts such as wire bristles, or blow dry with clean nitrogen.
Use non-woven fabric or precision filter paper dipped in analytical pure alcohol to wipe each part until there is no dirty color.
The WRAS butterfly valve should be stored in a dry, ventilated room, and both ends of the valve channel should be blocked.
WRAS butterfly valves stored for a long time should be checked regularly to remove dirt. Special attention should be paid to the cleaning of the sealing surface of WRAS butterfly valves to prevent damage to the sealing surface.
Before installation, carefully check whether the WRAS butterfly valve mark is equal to the use requirement.
Before installation, check the WRAS butterfly valve channel and sealing surface. If there is dirt, wipe it with a cleaning cloth.
During installation, the tightening force of the connecting bolts of WRAS butterfly valve should be even and appropriate.
The WRAS butterfly valve can be installed on horizontal and vertical pipelines. The installation position should ensure that it is easy to use, maintain and replace.
The use of the WRAS butterfly valve should be checked regularly to check whether the sealing surface is worn or not and the gasket packing. If the damage fails, it should be repaired or replaced in time.
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