ABS Diaphragm Valve Type 514 DN15-DN50 PN10

  Datasheet (PDF)

The Georg Fischer ABS Diaphragm Valve Type 514 is an engineered flow-control valve designed for precise throttling, linear regulation, and bubble-tight shut-off in industrial piping systems. Sized across metric dimensions from d20 mm (DN15) to d63 mm (DN50), this compact manual valve operates reliably at a nominal pressure of PN10 (10 bar at 20 degrees Celsius). Built for demanding utility and cooling applications, it provides installers and plant engineers with high operational efficiency and dependable isolation.

Technical specifications

The Type 514 diaphragm valve incorporates an aerodynamically optimized weir body that delivers up to double the flow rate of conventional diaphragm valves. This linear flow geometry significantly curtails pressure drop across the valve seat, optimizing energy consumption in continuous pumping installations.

• Nominal pressure rating: PN10 (10 bar at 20 degrees Celsius) across all metric sizes from DN15 to DN50.
• Flow performance: Optimized weir contour delivering up to double the flow coefficient of traditional diaphragm valves.
• Actuation control: Ergonomic handwheel featuring an integrated four-position locking mechanism resistant to mechanical plant vibrations.
• Body assembly: Central housing nut construction eliminating traditional multi-bolt bonnet assemblies for fast maintenance.
• Position indication: Integrated optical position indicator with modular interfaces ready for electrical feedback modules and limit switches.

Materials and standards

Manufactured from high-grade Acrylonitrile Butadiene Styrene (ABS), the valve body demonstrates exceptional impact strength and ductile mechanical toughness even at reduced temperatures. This chemical and physical resilience makes it particularly suitable for industrial water treatment and chilled water loops.

The valve is fitted as standard with an elastomeric EPDM diaphragm, ensuring bubble-tight bidirectional sealing even when handling fluid media containing minor abrasive suspended particles. The non-corroding ABS body material conforms to metric industrial standards, maintaining structural rigidity and corrosion immunity against industrial salts, diluted acids, and cooling water additives without scale formation or external oxidation.

Installation and jointing

Jointing is performed directly into metric pipe runs via integrated solvent cement sockets conforming to metric ABS piping dimensions. The central union nut enables rapid servicing without removing the valve body from the connected pipeline.

Installers should prepare the ABS socket surfaces using dedicated cleaner before applying Tangit ABS solvent cement to ensure completely fused, permanent joints. Because the central housing nut permits top-entry access to the diaphragm and operating mechanism, routine servicing and inspections can be completed with minimal downtime, eliminating the complex bolt-torque sequences required by legacy diaphragm designs.