Metering ball valve PROGEF 523 Pro PP-H d20 DN15 PN10

  Datasheet (PDF)

The Georg Fischer PROGEF Standard Type 523 Pro metering ball valve d20 DN15 PN10 is a thermoplastic regulating valve for precise micro-dosing and linear flow adjustment in industrial pipelines. Moulded from isotactic beta-polypropylene homopolymer (beta-PP-H), it combines a profiled regulating ball, a 180 degrees graduated scale and SDR11 butt fusion spigots. Supplied across Europe by BigWeld as an authorised Georg Fischer distributor.

Technical specifications

The profiled regulating ball and the extended 180 degrees operating angle give a nearly linear flow characteristic over the full travel, with a nominal flow coefficient of 20 litres per minute at 1 bar differential pressure.

• Nominal size: d20 metric spigot connection, DN15 nominal bore.
• Pressure rating: 10 bar (PN10) with water at 20 degrees Celsius.
• Flow coefficient: kv 20 l/min at Delta p = 1 bar for repeatable dosing.
• Actuation: 180 degrees rotation angle with a high-contrast graduated index.
• Seats and seals: low-friction PTFE ball seats with EPDM or FKM O-rings.
• Stem: blow-out-proof design with an engineered external shear point.

Materials and standards

The body is moulded from isotactic beta-polypropylene homopolymer (beta-PP-H), a compound dimensioned for a 25-year service life with water at 20 degrees Celsius, and factory leak testing follows EN 12266 and ISO 9393-2, leak rate A.

The beta-PP-H compound offers hydrostatic strength, rigidity and resistance to environmental stress cracking, so the valve handles water, wastewater, effluent treatment duties and a wide range of chemical media, including demineralised water, electroplating solutions and inorganic chemical feeds. PTFE seats backed by elastomeric O-rings keep the shut-off bubble-tight and the dosing setting stable over long service periods.

Installation and jointing

The valve is supplied with SDR11 butt fusion spigots, compatible with infrared (IR) fusion, for a homogeneous jointing into PROGEF Standard PP pipes and fittings of the same pressure series.

Spigot ends are prepared with a butt fusion or IR fusion machine; the 180 degrees scale should face the operator so that the setting can be read and reproduced after maintenance. The graduated index makes the valve suitable as a permanently set regulating element in chemical processing and water treatment plants, where it is adjusted once and locked into the process flow profile.