Solenoid valves are available in different body materials. Typical materials are plastics such as nylon, PVC, PPS, PEEK, PTFE, PEI, or metals such as brass, aluminum and stainless steel. The choice of material depends on the chemical properties, the temperature of the medium and the pressure. Choosing the right material is really important in order to achieve a long service life and to ensure problem-free use of the solenoid valve.
Plastics are an excellent choice for many purposes and are even superior to metals in some areas. Plastic solenoid valves are most commonly used for water, aggressive media and corrosive environments and are typically less expensive than metal products. This is mainly because plastic can be easily machined or, for large quantities, can also be processed cost-effectively by injection molding. A disadvantage compared to valves made of metal is that plastic valves have a lower pressure resistance and are therefore not used as a housing material for high-pressure applications.
Polyphenylene sulfide – PPS
PPS is a thermoplastic that is widely used as a material for solenoid valve housings. PPS is acid and alkali resistant and is used in many areas such as the automotive industry and general industry. The application temperature of PPS can reach up to 200°C.
Polyvinyl Chloride – PVC
PVC is a suitable material for contact with corrosive media, acids, bases and organic solutions. The temperature range is from -15°C to 60°C.
Polyamide – PA
PA has good chemical and mechanical properties. It is a cost effective material and is resistant to salt water, hydrocarbons, organic solvents, oils and greases. The temperature range is from -40°C to 85°C.
Polyetheretherketone – PEEK
PEEK has excellent mechanical and chemical properties, making it an ideal material for solenoid valve bodies. While PEEK is generally more expensive than other plastics, it can be used in a variety of applications. The continuous use temperature is up to 260°C.
Polytetrafluoroethylene – PTFE
PTFE is typically used to make seals. Due to its excellent resistance to almost all acids and bases, it is also suitable for the production of solenoid valve bodies. Because of its properties, it is very widely used in the chemical industry. PTFE can be used in a very wide temperature range from −200°C to 260°C.
Polypropylene – PP
PP is a plastic commonly used in industry. Valves made of PP are often used in the pharmaceutical and food industries.
Polyetherimide – PEI
PEI is a transparent and very strong and rigid thermoplastic. This plastic is used, for example, in hot water applications, hot/cold beverage machines and medical devices.
Polyvinylidene Fluoride – PVDF
PVDF has good chemical resistance and is often used in medical technology and biochemistry.
