PP-H Diaphragm Valve PROGEF DIASTAR Ten DA d20-63

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The Georg Fischer PROGEF DIASTAR Ten DA pneumatic diaphragm valve provides precise double-acting flow regulation for aggressive chemical handling and industrial water treatment installations. Built with an isotactic beta polypropylene homopolymer (beta-PP-H) body and SDR11 spigots, this PN10 assembly delivers dependable automated isolation across metric dimensions from d20 to d63 (DN15 to DN50). It is engineered specifically for plant installers and process engineers seeking crevice-free flow paths and long-term chemical durability.

Technical specifications

The DIASTAR Ten DA actuator utilises a double-acting pneumatic mechanism housed within a flame-retardant glass-fibre reinforced polypropylene shell. This configuration achieves virtually double the flow volume of older actuator designs while ensuring tight bidirectional shut-off against working pressures up to 10 bar.

• Nominal Pressure: PN10 (maximum working pressure of 10 bar).
• Actuator Mode: Pneumatic double-acting (DA) drive.
• Actuator Casing: Flame-retardant glass-fibre reinforced polypropylene (PPGF).
• Diaphragm Options: High-performance EPDM or composite PTFE/EPDM.
• Visual Feedback: Integrated optical position indicator with 90-degree rotatable air supply port.

Materials and standards

Manufactured from high-grade beta-PP-H, the valve body delivers outstanding mechanical strength, thermal stability, and resistance against industrial acids, alkalis, and abrasive media. The unit satisfies ISO hydrostatic pressure standards and is rated for a 25-year service lifespan in water applications at 20 degrees Celsius.

To combat severe atmospheric conditions, the mechanical design incorporates a robust central union nut that completely eliminates external metal bolts. This all-plastic exterior prevents atmospheric rust and chemical vapour degradation, preserving structural integrity in harsh production environments.

Installation and jointing

Metric SDR11 spigot ends allow seamless integration into industrial piping networks using either conventional butt fusion or contactless infrared (IR) fusion. These jointing technologies guarantee crevice-free pipe connections with consistent, minimal weld beads that prevent flow obstruction.

The rotatable pneumatic air connection swivels 90 degrees to facilitate piping in compact valve manifolds and tight skids. Furthermore, the central union nut design allows rapid servicing or diaphragm replacement directly inline without cutting pipe sections or stressing adjacent equipment.