Core advantages of non‑lubricated plug valves: Pollution‑free sealing performance

Non‑lubricated plug valves can achieve pollution‑free sealing. They mainly rely on a new structure design and special manufacturing materials. This valve does not use the lubricating grease sealing method of traditional valves. Traditional lubricated plug valves require operators to add special sealing lubricating grease between the valve plug and the valve body. This lubricating grease can reduce friction between parts and also perform a sealing function. Non‑lubricated plug valves have made structural upgrades. The equipment installs high‑performance self‑lubricating elastic sleeves or bushings between the valve plug and the valve body.

These sleeves are made of special materials. Common materials include polytetrafluoroethylene, PFA (perfluoroalkoxy), and high‑quality elastic materials. These materials have stable chemical properties and very low surface friction. A single sleeve can simultaneously perform the functions of reducing friction and sealing. When the valve plug is rotated for 90‑degree switching adjustment, the self‑lubricating sleeve can maintain a stable low‑friction state. The valve opening and closing operations will be very smooth. The equipment's operation throughout the process does not require any additional addition of lubricating grease.

This non‑lubricating grease structure design eliminates the risk of medium contamination at the source. Traditional lubricated plug valves will operate continuously for a long time. The pressure inside the pipeline will fluctuate, and the working temperature of the equipment will also change. These situations will have adverse effects on the equipment. The sealing lubricating grease inside the equipment will fall off and leak. The lubricating grease will directly dissolve in the fluid transported by the pipeline. Polluted production media will reduce the purity of the products. In precision industrial production, such contamination can cause the entire batch of products to be scrapped, resulting in direct economic losses for enterprises.

Non‑lubricated plug valves are significantly different from traditional valves. They adopt a full polymer material sealing structure. The equipment does not require adding any lubricating grease throughout its complete service life. The self‑lubricating sleeves inside the valve have stable chemical properties. The sleeves will not produce loose debris and will not react chemically with most production fluids. This structure can completely isolate the valve sealing components from the transporting medium. The gas, liquid, and slurry inside the pipeline can maintain their original cleanliness. The equipment can truly achieve pollution‑free fluid control work.

This valve not only has excellent clean sealing capabilities, but also can make the valve operate more stably and last longer. The self‑lubricating sleeves have an elastic preload structure. Equipment operation will cause normal wear, and environmental temperature changes will cause slight deformation of the parts. The sleeves can automatically fill the tiny gaps between the parts. The valve can maintain a tight seal for a long time and will not have air leakage or water leakage.

This valve does not rely on lubricating grease for operation. The equipment will not have common problems such as grease aging, failure, emulsification, and deterioration. The sealing effect of the valve will not deteriorate with the increase of usage time. The equipment can ensure the long‑term stable operation of the entire fluid system. The simple non‑lubricating structure also reduces the daily maintenance work of the equipment. Operators do not need to regularly check the grease status or frequently replenish and clean the lubricating grease. Enterprises can effectively reduce the operating and maintenance costs of equipment.

Pollution‑free sealing is the core advantage of this valve. The non‑lubricated plug valve can be widely used in various industries with high cleanliness requirements. Industries such as pharmaceutical production, food and beverage processing, fine chemicals, pure gas transportation, and ultra‑pure water treatment will extensively use this valve. These production scenarios have very high cleanliness requirements. A small amount of oil contamination will reduce the qualification rate of products and also cause production safety problems. The non‑lubricated plug valve can fully meet strict hygiene production standards. The manufacturing materials of the valve have stable chemical properties. The valve can work normally in corrosive medium environments. The equipment can adapt to more production scenarios while maintaining the pollution‑free performance.