Socket 20mm DADEX PPRc

Description

Socket 20mm PPRc

 

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

 

What is Socket 20mm DADEX PPRc ?

 

 DADEX PPRc (Polypropylene Random Copolymer) fittings, which are widely used in plumbing and HVAC industries. DADEX is a reputable Pakistani manufacturer known for durable, high-quality piping solutions.

Description

The Socket 20mm DADEX PPRc PN 25 is a male-threaded socket fitting made from Polypropylene Random Copolymer (PPRc), designed for seamless connections in piping systems. It features a 20mm outer diameter (OD) and is rated at PN 25 (pressure nominal 25 bar), making it suitable for high-pressure applications.

PPRc material is a thermoplastic known for its excellent resistance to corrosion, scaling, and chemical degradation. It’s non-toxic, food-grade compliant (meeting standards like DIN 8077/8078), and ideal for conveying potable water, hot/cold fluids, and HVAC refrigerants or heating/cooling media. The “socket” design typically includes a smooth inner bore for pipe insertion and external threads for screwing into female counterparts. It’s beige or green in color (depending on the variant for hot/cold lines) and is lightweight yet robust, promoting energy efficiency in installations.

Detailed Information

DADEX PPRc sockets are produced using advanced extrusion and injection molding techniques, ensuring uniformity and strength. This makes it versatile for:

• HVAC Applications: Used in chilled/hot water circuits, radiant floor heating, fan coil units, and air handling systems to connect pipes to HVAC equipment.
• Hot and Cold Water Supply: Ideal for domestic plumbing, solar water heaters, and industrial water distribution, handling temperatures from -20°C to +95°C without degrading.

Key advantages include:

• Durability: Lifespan of 50+ years under normal conditions, resistant to UV (short-term), chlorine, and bacteria.
• Hygiene: Smooth inner surface prevents biofilm buildup, ensuring safe drinking water.

Potential limitations: Not suitable for gas lines (use dedicated gas fittings) or temperatures above 95°C continuously. Always avoid exposure to direct sunlight for prolonged periods without protection.

Specifications

Here are the key technical specifications for the Socket 20mm DADEX PPRc PN 25 (based on standard DADEX product data; confirm with supplier for exact model):

• Material: Polypropylene Random Copolymer (PPRc Type 3), virgin grade (no recycled content).
• Size/Dimensions:
  • Nominal Diameter (DN): 20 mm (outer diameter of compatible pipe).
  • Socket Length (Insertion Depth): Approximately 18-22 mm (for pipe insertion).
  • Thread Type: Male BSP (British Standard Pipe) parallel threads, typically 3/4 inch (20 mm equivalent).
  • Overall Length: 30-40 mm (varies by design).
  • Wall Thickness: 3.0-3.5 mm (ensures pressure rating).
• Pressure Rating (PN): 25 bar at 20°C; service life of 50 years.
  • Temperature Derating:
    • Up to 20°C: 25 bar.
    • 60°C: 16 bar.
    • 70°C: 10 bar.
    • 95°C: 4.3 bar (maximum continuous temperature).
• Temperature Range: -20°C to +95°C (short-term up to 110°C).
• Weight: Approximately 20-30 grams (lightweight for easy handling).
• Color: Usually green (for hot water) or blue/beige (for cold water/HVAC); customizable.
• Standards Compliance:
  • DIN 8077/8078 (Germany) for dimensions and quality.
  • ISO 15874 for PPRc pipes and fittings.
  • WRAS/NSF approved for potable water.
  • PS 2780 (Pakistani standard for plastic pipes).
• Flow Characteristics: Low friction coefficient (0.07), ensuring minimal pressure drop (Hazen-Williams C-factor ~150).
• Packaging: Sold individually or in packs; minimum order quantities may apply for bulk.

For HVAC-specific specs, it’s compatible with glycol-water mixtures (up to 50% concentration) and non-aggressive fluids.

Installation Guidelines

Installation of the Socket 20mm DADEX PPRc PN 25 is straightforward, using heat fusion (socket welding) for pipe connections and threading for the male end. It requires basic tools and should be done by a certified plumber to avoid leaks. Follow these steps:

1. Preparation:
   • Ensure the pipe and fitting are clean, dry, and free of burrs. Cut the PPRc pipe squarely using a pipe cutter.
   • Measure and mark the insertion depth (typically 18-22 mm for 20mm size).
   • Tools Needed: PPRc socket fusion welding machine (set to 260-280°C), chamfering tool, deburring tool, thread sealant (PTFE tape for threads), measuring tape, and safety gear (gloves, goggles).
2. Socket Welding (Pipe Connection):
   • Quickly insert the heated pipe into the socket with a twisting motion, ensuring full depth without gaps. The joint forms a permanent, leak-proof bond via molecular fusion.
3. Threaded Connection:
   • Wrap the male threads with 2-3 layers of PTFE (Teflon) tape clockwise to prevent leaks (do not use excessive tape to avoid restricting flow).
   • Screw into a compatible female threaded component (e.g., elbow, valve) by hand first, then tighten 1-2 turns with a wrench. Avoid over-tightening to prevent cracking.
   • For HVAC systems, ensure alignment to avoid stress on the joint.
4. General Tips:
   • Work in temperatures between 5°C and 40°C for best fusion results.
   • Pressure test the system after installation: Hydrostatic test at 1.5x operating pressure for 1 hour (e.g., 37.5 bar max for PN 25, but start low).
   • Support pipes every 0.75-1 meter horizontally and 1.5 meters vertically to prevent sagging.
   • In HVAC setups, insulate joints to maintain efficiency.
   • Common Errors to Avoid: Overheating (causes deformation), incomplete insertion, or using mismatched sizes.

DADEX recommends professional training or consulting their installation manual. Warranty is typically 10-25 years if installed correctly.

Usage

This socket is primarily used for:

• HVAC Systems: Connecting 20mm PPRc pipes to HVAC components like boilers, chillers, pumps, or heat exchangers in underfloor heating, radiant cooling, or ductless systems. It’s excellent for circulating hot water (up to 70°C) or chilled water in commercial buildings, hospitals, or hotels in Rawalpindi’s climate (where temperatures can vary from 5°C to 45°C).
• Hot and Cold Water Supply: In residential plumbing for bathroom/kitchen lines, solar geysers, or RO systems. The PN 25 rating handles high-pressure municipal supplies or booster pumps without failure. It’s safe for potable water and resists scaling from hard water common in Punjab.

Application Examples:

• Installing a hot water line from a geyser to a faucet.
• Linking HVAC pipes to a fan coil unit in an air-conditioned room.
• Extending cold water supply in a multi-story building.

Maintenance: Inspect annually for leaks or damage. Clean with mild soap; avoid harsh chemicals. In usage, it supports flow rates up to 2-3 m/s without erosion.