As we know, in many industries today the use of chemicals to serve the daily production process, the use of chemicals can be in the form of solids or liquids, it is contained in the basin and piping leading to the site of use. To ensure safety and avoid risks, storage tanks and pipelines must also be made of materials resistant to chemical environments.

Lined valves are a safe and reliable solution to any level of corrosion flow for chemical industrial. The lining of the valves and fittings ensures extremely high chemical resistance and longevity.

In a lined valve, all wetted surfaces are a plastic material, typically a fluorocarbon. A lined valve’s metallic parts are manufactured from relatively inexpensive materials such as ductile iron. In a fully lined valve, no media comes in contact with any metal parts.

PTFE (Teflon) is a polymer compound formed by the polymerization of tetrafluoroethylene with excellent chemical stability, corrosion resistance, sealing, high lubrication and non-viscosity, electrical insulation and good aging resistance for media such as strong acid, strong alkali, strong oxidant. Its operating temperature is -200 ~ 180℃, poor fluidity, large thermal expansion. PTFE Lined valves ensures extremely high chemical resistance and longevity, can be widely used in corrosive applications in the chemical, electric machinery,harmaceutical, petrochemical, fertilizer, pulp and paper, and metallurgical industries.

Based on the advantages of teflon, lined valves are increasingly used because:

  • Chemical resistant: Teflon is a material that is virtually inert to most chemicals at high concentrations
  • High temperature resistant, teflon can withstand temperatures up to 250 degrees C
  • Resistant to impact and high pressure: valve liner is made of metal, only inner lining is teflon, so it can withstand impact and high pressure (note that at high temperature and pressure), different with plastic pipes can only withstand high pressure, at low temperature and vice versa only at low pressure, high temperature).

Practical application of lined valve:

PTFE lined valve and PFA lined valves are the commonly used valves that used as more economic alternatives to high-grade alloys in corrosive applications in the chemical, pharmaceutical, petrochemical, fertilizer, pulp and paper, and metallurgical industries.

Lined Valve that Daviteq is supplying:

Currently, Daviteq is the official representative of Crane Group in Vietnam. Supplying high-performance lined valves specialized for the chemical and industrial industries.

Established in 1956, XOMOX developed into a big brand with metal valve products. In 2001, CRANE Group acquired the XOMOX brand and developed into the world’s leading brand with specialized teflon lined valve products for fluids with high corrosive and abrasive properties.

With ptfe / edpm plastic lining, Xomox valves operate reliably and effectively in harsh corrosive environments with temperatures up to 200 oC. Currently, XOMOX Teflon lined valves are used in many factories such as Bien Hoa chemical factory, Tan Binh chemical factory, DAP-Hai Phong fertilizer factory, Nui Phao Mining etc.

Now, Xomox lined valves have 4 main product lines: Lined Butterfly Valve, Lined Ball Valve, Lined Plug Valve, Lined Check Valve. 

Xomox Lined Butterfly Valve

Corrosion-resistant butterfly valve model XLD is designed with sizes from DN50-600, maximum temperatures up to 200 oC. Pressure rating Ansi 150, PN10, JIS 10k

Xomox Lined Ball Valve

Corrosion-resistant ball valves model XLB have sizes from DN 5-150, maximum temperatures up to 200 oC. Pressure rating Ansi 150, PN10, JIS 10k

 Xomox Lined Plug Valve

Corrosion-resistant plug valve, with a breakthrough design compared to ball valves, good for solid fluids, size from DN15-300, maximum temperature resistance of 200 oC. Pressure rating Ansi 150, Ansi 300. In addition, the plug valve has a full-port line to ensure the best throughput.

 Xomox Lined Check Valve

Corrosion-resistant check valves have sizes from DN15-300, maximum temperature is 180 oC. Depending on the needs of customers, Daviteq will advise customers of the most suitable one-way valve.

Daviteq is proud to be the official distributor of Xomox / Crane optimal solution for industrial factory systems in Vietnam. For more information and support product advice, customers can contact us by email