Soft Seated Check Valve

Product Description

Soft seat check valve is also called soft seal check valve. The soft seal inside the valve means that the sealing material is made of soft material, that is, the valve plate of the valve is covered with rubber, or the valve body is inlaid with rubber seal. Rings such as: 1. Rubber (butadiene rubber, fluorine rubber, etc.) 2. Plastic (polytetrafluoroethylene, nylon, etc.), one side of the sealing ring is made of metal material, and the other side is made of elastic non-metallic material Known as "soft seal".

The soft seat check valve has the best sealing effect, but it is possible to leave more or less unclean debris (such as welding slag, iron filings, etc.) during pipeline installation and system cleaning. When they flow through the regulating valve , It is easy to scratch the soft sealing valve seat or valve core, which increases the leakage and the reliability of the sealing is poor. Therefore, the selection of the soft sealing structure must consider the cleaning of the medium and the strict flushing of the pipeline before putting into operation.

Depending on the structure and the material of the valve seat, the soft seal check valve can also be called

pfa lined swing check valve

ptfe lined swing check valve

rubber lined swing check valve

pfa lined check valve

teflon lined check valve

lined swing check valve

ptfe lined check valve

rubber lined check valve

Soft Seal Check Valve Application

The soft sealing check valve is suitable for the pipelines of various working conditions such as the pressure PN1.6-42.0MPa (CL150～CL2500) and the working temperature of -46°C～570°C in petroleum, chemical, pharmaceutical, fertilizer, electric power industries, etc. backflow.

Advantages

1. The soft sealing check valve uses an elastic rubber-wrapped valve plate, which uses the elastic energy of the rubber to compensate for slight deformation, so that the valve can achieve a good sealing effect.

2. Price advantage, the price of soft seat check valve is cheaper under the same caliber, pressure and material

3. The valve body is not easy to rust and is resistant to corrosion. The use of powder epoxy resin to coat the valve body of the soft-sealed gate valve can effectively resist oxidation and rust, and can also prevent the valve body from being corroded. Soft-sealed gate valves are often used in sewage treatment systems.

Disadvantages

1. The soft seal has poor fire resistance and will leak at high temperatures

2. In the case of emergency cut-off, the soft seal cannot be used under high pressure

3. Poor corrosion resistance, soft seal cannot be used in some corrosive media

4. Easy to age, wear and have short service life

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