90 Degrees Elbow Socket Fusion - Rp PP-H d20-40 PN10

  Datasheet (PDF)

The Georg Fischer PROGEF Standard 90 degrees transition elbow connects metric polypropylene socket fusion piping to threaded process equipment, valves, or metallic piping components. Engineered for industrial installations, this PN10 rated fitting transitions from a metric fusion socket (d20 to d40) to a cylindrical female thread (Rp 1/2" to 1 1/4" according to ISO 7-1). As an authorised Georg Fischer distributor, BigWeld supplies this reinforced fitting for chemical processing, water treatment, and industrial utilities requiring reliable joints between plastic lines and threaded components.

Materials and standards

The fitting body is manufactured from high-grade isotactic polypropylene homopolymer (β-PP-H) compliant with EN ISO 15494. This formulation delivers exceptional resistance against aggressive chemical media, including inorganic acids, alkalis, and diverse industrial effluents, while maintaining long-term hydrostatic strength for a design service life of 25 years with water at 20 degrees Celsius.

To ensure structural integrity under mechanical assembly loads, the female threaded branch incorporates an integrated A2 grade stainless steel reinforcing ring. This external metal collar constrains hoop stresses and radial expansion generated during thread tightening, preventing environmental stress cracking and structural deformation under elevated hydraulic operating pressures.

Technical specifications

This 90 degrees elbow is engineered for SDR 11 piping systems, delivering dependable operation under continuous nominal working pressure. The dimensional design accommodates standard metric spigots on one side and standard parallel pipe threads on the other.

• Material: Polypropylene homopolymer (β-PP-H) conforming to EN ISO 15494
• Pressure rating: PN10 (nominal working pressure 10 bar)
• Socket fusion sizing: Metric pipe diameters d20, d25, d32, and d40 (SDR 11)
• Thread connection: Cylindrical female thread Rp 1/2", 3/4", 1", and 1 1/4" to ISO 7-1
• Reinforcement: Solid A2 stainless steel collar surrounding the threaded socket
• Temperature and service life: Designed for 25 years of service with water at 20 degrees Celsius

Installation and jointing

Jointing requires two distinct procedures: heat socket fusion on the metric socket side and mechanical threaded connection on the reinforced Rp branch. Following standard polyfusion protocols guarantees a leak-free, long-lasting installation.

The socket fusion inlet is heated simultaneously with the pipe end using calibrated heating bushes on standard socket fusion machines. Once molten, the components are joined without rotation, creating a completely homogeneous molecular bond devoid of leak paths or crevices. For the female threaded socket, apply a chemically compatible thread sealant such as PTFE tape before threading in the male mating component. Avoid excessive tightening torque beyond recommended limits, as the A2 stainless steel ring reinforces the socket to provide maximum sealing reliability without over-stressing the plastic core.