non-return valve

AWH non-return valves are designed for use in pipes, systems and machines in the food and beverage industry. They are designed for liquid products, additives and cleaning liquids. They are used to prevent pipes from draining and are ideally installed on the pressure side of pumps to prevent the fluid level from dropping or more elevated system components from draining when the pump is off. They are also used in mixing and metering systems where various media are mixed together.

A non-return valve is placed in every component flow line to prevent contamination from other components. AWH non-return valves feature a hygienic, flow-optimized design that minimizes pressure loss and optimizes self-cleaning. The non-return valve is divided into a top and a base that are firmly joined by a clamp connection. The housing parts are sealed together with a U-sealring that joins the two halves hygienically and tightly.

The valve meets the latest hygiene standards and comes with metallic locating surfaces to preserve the seals. This reliably prevents microscopic gaps where bacteria and product residue can collect. The dual valve disk guide ensures long-lasting and reliable operation.

• Materials:
• • Valve disk: 1.4408
  • Spring holder: 1.4404 (316L)
  • Spring: 1.4310, 1.4404 (316L)
  • Housing: 1.4301/1.4307 (304/304L), 1.4404 (316L)   
• Seal rings: EPDM, FKM
• Operating pressure: max. 10 bar / 145 psi
• Max. operating temperature:
• • 80°C / 176°F (continuous)
  • 130°C / 266°F (short-term)