Reducer Socket 40x25mm RAKtherm PPRc

Reducer Socket 40x25mm RAKtherm PPRc PN 25 is a specialized PPR (Polypropylene Random Copolymer, often called PPRC or PPRc) pipe fitting manufactured by RAKtherm (Gulf Plastic and Converting Industries, UAE). It is designed for connecting pipes of different diameters (reducing from 40mm to 25mm) in pressurized hot and cold water systems, including HVAC, plumbing, and water supply applications.

Description

• Type: Socket reducer (also called reducing coupler or reducer socket) — a cylindrical fitting with one larger socket end (40mm) and one smaller socket end (25mm).
• Material: High-quality Polypropylene Random Copolymer (PPRc), food-grade, corrosion-resistant, and non-scaling.
• Joining Method: Socket fusion welding (heat fusion) — creates a homogeneous, leak-proof joint by melting the pipe and fitting together.
• Key Benefits (from RAKtherm systems): Long service life (50+ years), resistance to chemicals and corrosion, low thermal conductivity, lightweight, and easy installation. Suitable for both residential/commercial buildings and industrial applications.

It is imported from the UAE and commonly used in the Middle East and other regions for reliable water distribution.

Specifications

• Sizes: 40mm x 25mm (larger end x smaller end).
• Pressure Rating: PN 25 (nominal pressure up to 25 bar at reference temperature; derates at higher temperatures).
• Temperature Range: Suitable for cold water (ambient) and hot water up to ~95°C (short-term peaks possible; system designed for continuous operation per standards like DIN 8077/8078).
• Art. No. (from RAKtherm catalog): R1-4025.
• Packing: Typically 5 pieces per unit; weight ~0.029 kg per piece.
• Standards: Conforms to DIN 8077/8078 and equivalent international standards (e.g., ISO 15874). RAKtherm products undergo strict quality control.
• Color: Usually green, grey, or white (standard for PPR fittings).
• Other: Compatible with RAKtherm PPR pipes (PN 10/16/20/25) in sizes 20–110mm.

For full system pressure/temperature derating, refer to RAKtherm technical data (e.g., higher temperatures reduce max pressure).

Installation

RAKtherm systems use socket fusion welding at ~260°C. Follow manufacturer guidelines for safe, leak-proof joints.

Basic Steps:

1. Cut the PPR pipe squarely and cleanly using a dedicated pipe cutter (no burrs or skew).
2. Mark the insertion depth on the pipe.
3. Clean pipe end and fitting socket thoroughly (dry cloth; remove contaminants).
4. Heat the welding tool to 260°C. Insert pipe into the male (outer) part of the tool and fitting into the female (inner) part simultaneously. Heat for the recommended time (depends on diameter; typically seconds — consult table in catalog for exact times; increase in cold weather <5°C).
5. Join quickly: Remove from tool, align straight (no twisting), and push together to the marked depth. Hold firmly during cooling (no mechanical stress).
6. Cool fully before pressure testing or loading (system can often take load after ~15–30 minutes depending on size).

Tools Needed: RAKtherm welding device, cutters, marking tools, etc. (detailed in catalog).

General Guidelines:

• Support pipes properly; account for thermal expansion (PPR expands with heat — use formula or tables: ΔL = α × L × ΔT, α ≈ 0.15 mm/m·K).
• Avoid direct sunlight/UV exposure for standard pipes (use Stabi/UV-protected variants if needed).
• Pressure test the system after installation.
• Follow local codes and full RAKtherm installation manual for supports, insulation, and best practices.

Warnings: Do not twist during joining. Ensure proper alignment. Contamination weakens joints.

Usage

• Primary Applications: Reducing pipe diameter in hot/cold water supply lines, risers, branches, or HVAC systems to maintain flow/pressure while transitioning sizes.
• Common In: Residential/commercial plumbing, underfloor heating, industrial fluid transport (non-aggressive media).
• Advantages in HVAC/Water Supply: Durable under pressure and temperature fluctuations, hygienic (no corrosion or scaling), and energy-efficient due to low heat loss.