Reducer Socket 110x90mm DADEX PPRc

Description

Reducer Socket 110x90mm

 

Coupling Reducing PPRC DADEX PPRc Food grade , Fittings, Reducer Socket 110x90mm Manufacturer Dealer contact 0322-3540656

 

What is Reducer Socket 110x90mm DADEX PPRc ?

 

• 📌 Description

  • Reducer Socket: A coupling fitting that reduces pipe diameter from 110mm to 90mm.
  • Material: PPRc (Polypropylene Random Copolymer), known for durability, chemical resistance, and thermal stability.
  • Brand: DADEX Polydex – Pakistan’s first complete PPR system conforming to international standards.
  • Color: Typically green, indicating PPRc fittings.
  • Application: Used in HVAC chilled water lines, hot water supply, cold water distribution, and compressed air systems.

  📊 Specifications

  Feature	Details
  Size	110mm x 90mm
  Type	Reducer Socket
  Material	PPRc (Polypropylene Random Copolymer)
  Pressure Rating	PN25 (25 bar)
  Temperature Range	-20°C to +95°C
  Standards	ISO and DIN compliance
  Applications	HVAC, potable water, industrial piping, compressed air

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Technical specifications

• Material: Polypropylene random copolymer (PPRc), food‑grade, suitable for potable water and chemically resistant to many acids, alkalis and dissolved salts.​

• Size: 110mm × 90mm (outer diameter of mating pipes); Polydex range specifically covers 20–110mm pipes and fittings, so this reducer sits at the top end of that range.​

• Pressure rating: PN 25 for the fitting (25 bar at 20°C), compatible with Polydex pipes which are typically PN 20 to DIN 8077/8078; design pressure must be derated as temperature increases (e.g. for continuous hot water or heating).​

• Standards:

  • Pipes: DIN 8077 / DIN 8078 (dimension and pressure classification).​

  • Fittings: DIN 16962; Polydex fittings carry the Ekoplastik (EK) marking for identification and compatibility.​

• • Preparation: Ensure pipes are cut square and clean.
  • Fusion Welding: DADEX PPRc fittings are installed using heat fusion welding machines.
    • Heat both pipe ends and socket at ~260°C.
    • Insert pipe into socket until marked depth.
    • Allow cooling for a few seconds to form a leak-proof joint.
  • Support: Use proper clamps and supports to avoid stress on joints.
  • Testing: Pressure test the system after installation to confirm leak-free performance.​

Installation (socket fusion welding)

For Dadex Polydex reducer sockets, the standard PPR socket‑fusion procedure applies for both ends:

1. Preparation

   • Cut the 110mm and 90mm pipes square with a proper pipe cutter, remove burrs, and clean the ends from dust, grease or moisture to avoid voids in the weld.​

   • Check that the reducer and pipes are of the same PPRc system (Polydex) and pressure class; mixing different plastics or SDRs in a fused joint is not recommended.​

2. Heating

   • Set the fusion tool (heating plate) to the typical PPR welding temperature around 260°C (as per manufacturer’s table).

   • Slide the pipe end and the corresponding side of the reducer socket simultaneously on the male and female heating nozzles to the marked insertion depth; heating time increases with size and is longest on the 110mm side (consult Dadex time/penetration chart for exact seconds).​

3. Jointing

   • After the prescribed heating time, quickly remove both pieces from the nozzles and push the pipe fully into the socket without twisting, keeping axial alignment.​

   • Hold the joint steady (no bending or torsion) for the specified “fusion and cooling” time until the initial bead sets; an external uniform weld bead should be visible around the circumference.​

4. Cooling and testing

   • Allow full cooling before applying mechanical stress or pressure; for large diameters like 110mm this is several minutes as per the PPR welding chart.

   • Pressure‑test the line in accordance with the design standard (typically hydrostatic test, stepped up to and held at the design or test pressure) to confirm leak‑tightness.​

Usage and good practice

• Use within the designed pressure/temperature envelope of the Polydex PN 25 fittings and matching pipes; for continuous hot water and heating circuits, apply manufacturer derating curves when approaching 70–90°C.​

• Support large‑diameter PPRc lines adequately on both sides of the reducer to avoid bending loads on the joint; high‑rise HVAC and water systems in seismic areas particularly benefit from Polydex’s flexibility and seismic suitability mentioned by Dadex.​

• Avoid direct exposure to UV (e.g. on roofs) without protection, and keep reducers accessible where future modifications or extensions to 90mm branches are anticipated