Series 418

The overflow and pressure control valves of series 418 are suitable for the protection of pumps. Furthermore, the valves are optimal for pressure relief and control of containers and tanks (e.g. CO2 overlay) and optimal for pressure relief of closed piping systems. This is because the escaping medium can be discharged or returned in a controlled manner.
The valves are made entirely of stainless steel and are also suitable for use in hygienic processes such as CIP or SIP cleaning. The use of stainless steel as a material makes the valves particularly resistant to corrosion and aggressive media. 
The advantage of the 418 overflow valve is above all the high operating pressure of up to 30 bar. Maximum ease of maintenance is ensured by a replaceable valve cartridge.
Due to a variety of possible seals, applications from -60 to +225 °C are possible. The valves can be conveniently adjusted or set during operation via the external adjustment. This allows optimum adaptation to the operating conditions of the system. The valves can also be supplied with a fixed setting and lead-sealed at the factory. Overflow valves are not equipment parts with a safety function within the meaning of the EC Pressure Equipment Directive 97/23/EC and therefore do not have a type examination certificate.

• Internal pipe thread
• Male thread
• Clamp connections

• chemical plants
• biogas plants
• Desalination plants
• Shipbuilding and equipment
• Secondary sectors of the food, beverage, pharmaceutical and cosmetics industries
• Machinery and apparatus engineering

For the protection of pumps against overload in closed circuits for neutral / non-neutral, non-sticky liquids