PROGEF PP-H / Malleable Iron Adaptor Union d20-63mm Rp PN10

  Datasheet (PDF)

The Georg Fischer PROGEF Standard adaptor union provides a detachable, pressure-tight transition between metric polypropylene homopolymer (PP-H) pipelines and threaded metallic equipment or piping systems. Engineered for industrial process distribution, water treatment facilities, and chemical effluent lines, this composite union combines a metric fusion socket with a galvanised malleable iron female thread. It allows rapid component disconnection without cutting pipework, ensuring operational flexibility in demanding fluid handling networks.

Technical specifications

The PROGEF adaptor union is rated for a continuous operating pressure of PN10 (10 bar at 20 degrees C) across outer diameters d20 to d63 mm. The fitting pairs metric socket fusion ends with parallel female pipe threads (Rp) ranging from 1/2 inch to 2 inches.

• Nominal pressure rating: PN10 (10 bar at 20 degrees C water) with a 25-year design service life.
• Size range: Metric outer diameters from d20 mm to d63 mm.
• Thread connection: Parallel female thread Rp from 1/2 inch to 2 inches according to ISO 7-1.
• Sealing element: High-integrity elastomeric EPDM O-ring gasket conforming to EN 681.
• Joint configuration: Metric socket fusion bush, threaded metal insert, and ergonomic PP-H union nut.

Materials and standards

Manufactured according to EN ISO 15494, the fitting body is produced from isotactic beta-PP-H (polypropylene homopolymer) combined with a robust galvanised malleable iron threaded bush. This multi-material construction delivers exceptional chemical compatibility along with rigid mechanical strength at threaded interfaces.

The beta-PP-H compound features high resistance to inorganic salts, aqueous acids, alkalis, and diverse industrial effluents, while maintaining low surface roughness to prevent encrustation and hydraulic head loss. The malleable iron threaded section provides high resistance against mechanical overtightening torques and pipe stress. The internal elastomeric EPDM gasket complies with EN 681 standards for reliable elastomeric seal performance in water treatment and industrial utility circuits.

Installation and jointing

Jointing is performed on the thermoplastic side using standard socket fusion equipment, whereas the metallic female end threads directly onto standard Rp or R pipework and equipment. The assembly permits non-destructive dismantling for servicing pumps, flow meters, pressure regulators, or system valves.

During installation, the PP-H bush is heated and fused homogenously into the pipeline using calibrated socket fusion heaters. The galvanised malleable iron thread must be sealed using suitable thread sealants compatible with both the fluid and materials. The ergonomic PP-H union nut compresses the EPDM gasket firmly against the mating face, enabling tool-free or low-torque assembly and disassembly without modifying surrounding rigid pipework. As an authorised Georg Fischer distributor, BigWeld supplies genuine PROGEF components engineered for industrial reliability.