Reducing Tee 50x25mm RAKtherm PPRc

Reducing Tee 50x25mm RAKtherm PPRc PN 25 (also referred to as 50/25mm or 50x25x50mm in some listings) is a PPR (Polypropylene Random Copolymer) pipe fitting manufactured by RAKtherm (a UAE-based company, part of Gulf Plastic and Converting Industries / Tahweel). It is designed for branching in pressurized hot and cold water systems.

Description

• Type: Reducing Tee (Tee with one reduced branch). It connects three pipes: two main runs of 50mm diameter and one branch of 25mm diameter, forming a T-shape for flow distribution or diversion.
• Material: High-quality PP-R (Polypropylene Random Copolymer, often called PPR or PPRc). This material is corrosion-resistant, hygienic, and suitable for potable water. RAKtherm uses PP-R 80 grade for durability.
• Color: Typically green (common for RAKtherm PPR systems).
• Pressure Rating: PN 25 (Nominal Pressure 25 bar at 20°C).
• Origin: Manufactured in the UAE (Ras Al Khaimah), imported for markets like Pakistan, Middle East, etc.
• Key Benefits:
  • Excellent resistance to corrosion, chemicals, and scale buildup.
  • Low thermal conductivity (good insulation properties).
  • Long service life (50+ years under normal conditions).
  • Lightweight compared to metal fittings.
  • Suitable for both hot (up to 70–95°C with derating) and cold water.

It is commonly used in HVAC, plumbing, water supply, heating systems, and industrial fluid transport.

Specifications

• Dimensions: 50mm (main) x 25mm (branch) x 50mm.
• Standard: Complies with DIN 8077/8078, ISO 15874, and other international standards for PP-R systems.
• Pressure/Temperature Performance (approximate for PN25 PP-R):
  • At 20°C: Up to 25 bar.
  • At 70°C: Significantly lower (typically 7–10 bar depending on exact SDR/wall thickness; consult catalog for precise derating tables).
  • Short-term peaks up to 95–100°C possible.
• Joining Method: Socket fusion (heat welding) — creates a homogeneous, leak-proof joint.
• Weight: Around 0.029–0.19 kg per piece (varies by exact model; one brochure lists ~0.029 kg for a 50/25 variant).
• Packing: Often 5 pcs or 1 pc per pack.

RAKtherm offers matching PN25 pipes (SDR 5 or similar) in sizes 20–110mm.

Installation

RAKtherm systems use socket fusion welding (not threading or solvent cement for main joints):

1. Preparation: Cut pipe squarely, deburr, and chamfer (15° bevel). Clean surfaces. Mark insertion depth.
2. Heating: Use a RAKtherm-approved socket fusion welding machine (temperature ~260°C). Heat the pipe end (male) and fitting socket (female) simultaneously for the recommended time (e.g., for 50mm: ~18 seconds heating; refer to exact tables).
3. Joining: Quickly insert the pipe into the fitting without twisting. Hold briefly.
4. Cooling: Allow full cooling time (e.g., 4–8 minutes for larger sizes) before applying pressure.
5. Guidelines: Follow RAKtherm’s technical manual/DVS 2207 standards. Use proper tools. For exposed installations, consider Stabi (aluminum composite) variants for lower expansion.

Important: Professional installation is recommended. Incorrect welding can cause leaks. Protect from UV if not anti-UV grade. Use insulation for hot water lines to reduce heat loss.

Usage and Applications

• Hot & Cold Water Supply: Residential, commercial, and industrial plumbing.
• HVAC: Chilled water, heating circuits, radiator connections.
• Other: Underfloor heating, solar systems, chemical transport (check compatibility), hospitals, hotels.
• Advantages in HVAC/Water Supply: Smooth bore (low friction), no corrosion (longevity), easy branching for distribution lines (e.g., 50mm main to 25mm outlets)