PPR Pipe 63mm DADEX

Description

PPR Pipe 63mm 

 

DADEX PPRc pipes and fittings local ,, Food Grade, Plumbing Materials, Distributor Suppliers in Islamabad Pakistan  Contact 0322-3540656

 

What is PPR Pipe 63mm DADEX  ?

 

The Dadex Polydex Thermoline 63mm PN 20 pipe is a high-performance piping solution manufactured by Dadex Eternit Ltd.¹ It is specifically engineered using Polypropylene Random Copolymer (PPR-C) to handle high-pressure and high-temperature environments.

Here is the detailed information regarding its description, specifications, and installation.

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1. Description

• Material: Polypropylene Random Copolymer (PPR-C Type 3).

• Product Lines: Dadex offers this under two primary brand names:

  • Polydex: Usually green-colored, known for its Antimicrobial properties (99.9% efficacy against bacteria/algae).

  • Thermoline: Usually grey-colored, focused on cost-effective hot and cold water distribution.

• Appearance: Typically Green (Polydex) or Grey (Thermoline) with longitudinal stripes indicating pressure rating.

• Standard Length: Usually supplied in 4-meter straight lengths.

2. Technical Specifications (63mm PN 20)

The “PN 20” rating indicates a nominal pressure of 20 bar at a reference temperature of 20°C.

Feature	Specification
Outside Diameter	63 mm
Pressure Rating	PN 20 (20 Bar / ~290 PSI)
Wall Thickness	Approx. 10.5 mm
Temperature Range	-20°C to +95°C (Short-term peaks up to 110°C)
Standards Compliance	DIN 8077 (Dimensions) & DIN 8078 (Quality Requirements)
Life Expectancy	50+ years (when used within rated temperature/pressure)

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3. Usage & Applications

This specific 63mm PN 20 pipe is a “heavy-duty” size, typically used for main headers or risers in large buildings rather than individual room branch lines.

• HVAC Systems: Ideal for chilled water circulation in central air conditioning and radiator heating connections.

• Hot & Cold Water: Main supply lines for residential complexes, hospitals, hotels, and industrial plants.

• Industrial: Transportation of aggressive fluids (acids/alkalis) due to high chemical resistance (pH 1–14).

• Compressed Air: Distribution of high-pressure air in factories.

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4. Installation (Heat Fusion Method)

PPR pipes do not use glue or threads. They are joined using socket heat fusion, which melts the pipe and fitting into a single, leak-proof piece of plastic.

Step-by-Step Process:

1. Cutting: Cut the pipe square (90°) using a professional PPR cutter.

2. Cleaning: Wipe the pipe end and fitting socket with a dry cloth to remove dust or moisture.

3. Heating: * Set the welding machine to 260°C.

   • Push the pipe and fitting onto the heating mandrels simultaneously.

   • Heating Time for 63mm: Approximately 24–30 seconds

4. Joining: Remove from the machine and push the pipe straight into the fitting.¹¹ Do not twist the pipe during insertion.

5. Cooling: Hold the joint steady for about 30 seconds. Full cooling for a 63mm joint takes about 6–8 minutes before pressure can be applied.

Key Installation Tips:

• Expansion Loops: Because PPR expands when hot, long straight runs (over 5m) in HVAC systems require expansion loops or offsets to prevent the pipe from buckling.

• Clamping: Use sliding clamps for open installations to allow for thermal movement.

• Testing: Conduct a hydrostatic pressure test at 1.5 times the working pressure after the joints have fully cured (usually 24 hours).