PROGEF PP-H End Cap SDR17.6 PN6

  Datasheet (PDF)

The Georg Fischer PROGEF Standard PP-H end cap provides a permanently fused termination for large-diameter polypropylene lines. Supplied in nominal diameters from d250 mm to d500 mm, in SDR17.6 geometry and rated PN6, it suits process plants, chemical distribution networks, water and effluent treatment and industrial drainage, where the closure must match the chemical resistance of the pipe itself.

Materials and standards

The fitting is manufactured by Georg Fischer in accordance with EN ISO 15494 for thermoplastic pressure piping systems with long-term hydrostatic properties. Depending on the nominal diameter, the compound is either isotactic beta-nucleated polypropylene homopolymer (beta-PP-H) or polypropylene random copolymer (PP-R) with MRS 10 MPa.

Both compounds are designed for a 25-year operational life with water at 20 degrees Celsius under the nominal pressure of the system. Polypropylene offers high resistance to inorganic salts, acids and alkalis, good notched impact strength, resistance to environmental stress cracking and resistance to internal abrasion from solid-laden media. The polymer surface does not incrust or scale and does not support biological fouling, so hydraulic conditions remain stable over the service life of the line.

Technical specifications

The end cap is a dead-end closure in SDR17.6 wall geometry, rated PN6 at the reference temperature of 20 degrees Celsius, and is dimensionally matched to PROGEF Standard butt fusion pipes and fittings.

• Material: polypropylene to EN ISO 15494, beta-PP-H or PP-R with MRS 10 MPa according to diameter
• Nominal pressure: PN6 at 20 degrees Celsius
• Dimensional ratio: SDR17.6 wall thickness geometry
• Nominal diameters: d250 mm to d500 mm, seven sizes
• Jointing: butt fusion, compatible with infrared fusion
• Design life: 25 years with water at 20 degrees Celsius

Installation and jointing

The cap is joined by heated-tool butt fusion following the DVS 2207 procedure, using butt fusion or infrared fusion machines suited to the diameter.

Because the joint is made between identical polypropylene compounds, the weld is homogeneous and gasket-free, with no elastomer or threaded interface to age inside the process line. Pipe ends must be squared, cleaned and aligned in the clamping tool before fusion, and the assembly must cool under clamping pressure before handling or pressure testing. The closure is permanent: reopening a terminated section requires cutting the pipe and welding a new component in place.