For fluids containing solid particles, we supply ball valves with Tungsten Carbide (WC) coated ball and seats to prevent erosion of the sealing surfaces.
Valves suitable for operating in low temperature fluid treatment processes, ensuring sealing classes within specific limits.
For environments containing H2S in oil and gas production, we supply valves with materials that meet ISO 15156 (NACE) requirements. We can provide HIC and SSCC corrosion test certificates upon request.
Often, ball valves are ordered with “reduced emission”, meeting regulations that establish low emission rates to the atmosphere. In that case, we supply a special type of valve with a high quality surface finish on the body and shaft surfaces, as well as appropriate seals.
To eliminate the possibility of O-ring explosion due to rapid decompression of gas absorbed by the molecular structure of the elastomeric sealing element, we employ valves with O-rings or sealing washers resistant to explosive decompression.
Valves that work with special fluids must meet specific requirements, according to procedures determined by the plant and manufacturer. To avoid the risk of explosive decompression when using carbon dioxide, we use special O-rings and sealing washers. Valves employed with chlorine require special features, including complete grease lubrication and decontamination. Valves used with oxygen, on the other hand, require special features to eliminate the risk of ignition.