Depending on the type of application, resistance to chemicals and corrosive agents may be a central consideration when choosing parts and components for a system. While chemical resistant solenoid valves are a natural choice in any type of chemical process or application, they can also be critical to select when working with any type of aggressive fluid media.
It not uncommon to find that chemical resistant solenoid valves are used in water treatment plants, wastewater handling facilities, in the textile and processing industries as well as in any application where grease, oil, fuel residue or other similar types of contaminants are possible in the area or in the solutions in the system.
Different Options in Materials
As with most types of chemical resistant valves, the wetted surface of the valve, or all areas where the media touches the valve, are coated with PTFE or polytetrafluoroethylene. This is also commercially similar to Teflon, so it is truly non-stick, non-reactive surface. While PTFE is non-reactive and resistant to the vast majority of chemicals, it is not resistant to fluorides and forms of liquid sodium.
Other options to consider in these types of valves including PEEK or polyetheretherketone and polypropylene or PP (Poly Pro). Both of these materials are very durable for the body of the valve and offer resistant to most chemicals. These materials are also a top match for high-temperature applications, which is also an important consideration when making a choice in valves.
Designs
There are many different designs and configurations in chemical resistant solenoid valves, ideal for any type of application in clean and high purity environments. These include miniature solenoid valves that offer a range of different configurations from 2-way through to 3-way designs. Different valves can be set up for use with AC or DC voltages, and with a non-porous diaphragm, the coil itself is completely isolated, ensuring a long life cycle for the valve even in extreme operating conditions
