How to clean PTFE lined butterfly valve?

A PTFE lined 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 PTFE lined butterfly valve closes against a ring seal to close off the flow. The other main parts are the PTFE lined butterfly valve body, the stem/ shaft and the valve actuator.

How to clean PTFE lined butterfly valve?

Does PTFE lined butterfly valve need to lubricate?

What can PTFE lined butterfly valve be used for?

How to clean PTFE lined butterfly valve?

According to the processing requirements, some parts of PTFE lined butterfly valve need to be polished, and the surface must not have processing burrs.

All parts of the PTFE lined 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 PTFE lined 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.

Does PTFE lined butterfly valve need to lubricate?

Of course. Proper valve lubrication is important to the long life of PTFE lined butterfly valve. At first, check whether the lubricator of PTFE lined butterfly valve is working properly and whether the viscosity of the lubricating oil is appropriate. If necessary, you can choose to replace the lubricating oil, clean the sliding part of the PTFE lined butterfly valve and replace the spring.

PTFE lined butterfly valves are normally of wafer design, fitting directly between piping flanges. PTFE lined butterfly valves can be either symmetric or eccentric (i.e., the stem is offset from the center of the disc). The flanged valve has a very short body and is flanged at both ends. The PTFE lined butterfly valve has a shortened body with protruding PTFE lined whose bolt circle matches the adjoining flanges. The wafer has no PTFE lined.

Lubricant for PTFE lined butterfly valve can also be used to seal vacuum and pressure systems. Because sealing vacuum and pressure systems is especially necessary when PTFE lined butterfly valves are outdoors or are thus subjected to harsh environments and periodic to frequent washing, it is a moisture resistant lubricant and sealant.

What can PTFE lined butterfly valve be used for?

PTFE lined butterfly valve is widely used in chemical, petroleum, metallurgy, medicine and other industrial sectors to adjust or cut off the strong corrosive medium such as acid and alkali in the production process. PTFE lined butterfly valve has the most obvious effect in the control of water treatment process. PTFE lined butterfly valve is one of the most ideal choice of anticorrosive valve equipment at present.

Today, PTFE lined butterfly valves have proven their endurance and dependability in a wide range of industries and applications. PTFE lined butterfly valves are available in line sizes from 2" to over 72", temperature ratings from cryogenic to 1500F, and pressures to 1440 psi. PTFE lined butterfly valves are used in isolation and control services, and with media such as slurries, steam, gases and liquids. Continuing development of the PTFE lined butterfly valve is making it possible to use them in aggressive applications that previously were the exclusive domain of gate valves and globe valves.

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