Description
Reducer Socket 90x50mm
Coupling Reducing PPRC RAKtherm Food graded third generation . Sizes ranging from 25mm to 110mm diameter. Distributor contact 0322-3540656
What is Reducer Socket 90x50mm RAKtherm PPRc ?
Product Overview**
| Item | Description |
|---|---|
| Product name | Reducer Socket (90 mm × 50 mm) – RAKtherm PPRc PN 25 |
| Brand / Manufacturer | RAKtherm (RAK Polymers FZC, Ras Al Khaimah, UAE) |
| Type | Socket‑type reducer fitting (both ends are sockets) |
| Material | Polypropylene Random Copolymer (PPR‑c, also called PP‑R Type 3) |
| Pressure class | PN 25 (nominal pressure ≈ 25 bar at 20 °C) |
| Temperature range | –40 °C to +95 °C (continuous hot‑water up to 80 °C; short‑term peak 95 °C) |
| Intended service | Hot‑ and cold‑water distribution in building‑services / HVAC water supply |
| Import origin | United Arab Emirates (UAE) |
1. What It Is & Why You Need It
A Reducer Socket is a fitting that lets you connect a larger‑diameter pipe (90 mm) to a smaller‑diameter pipe (50 mm) in a PPR (Polypropylene Random Copolymer) piping system.
- Function – Changes pipe size while maintaining a leak‑tight, welded joint.
- Typical use – In HVAC water‑supply networks (heating water, chilled water, & domestic hot‑cold supply) where a main riser (90 mm) must branch to a smaller lateral (50 mm).
- Advantages of PPR‑c – Excellent corrosion resistance, low thermal conductivity (keeps heat in hot‑water circuits), high impact‑strength, long service life (≥ 50 years), and compatibility with both socket‑fusion and butt‑fusion joining methods.
2. Technical Specifications Reducer Socket 90x50mm RAKtherm PPRc
| Parameter | 90 mm End | 50 mm End |
|---|---|---|
| Nominal outer diameter (OD) | 90 mm | 50 mm |
| Socket depth (L) | 30 mm ± 2 mm (typical) | 24 mm ± 2 mm |
| Wall thickness (t) | 10.0 mm ± 0.5 mm (typical for PN 25) | 6.6 mm ± 0.4 mm |
| Inner diameter (ID) | ≈ 70 mm | ≈ 36.8 mm |
| Weight (approx.) | 0.35 kg | 0.12 kg |
| Material grade | PPR‑c (PP‑R Type 3) per ISO 15874 | Same |
| Color | RAL 6018 “Green” (standard for RAKtherm) or RAL 7016 “Grey” | Same |
| Pressure rating | PN 25 (25 bar at 20 °C) – see Derating table below | Same |
| Temperature rating | –40 °C to +95 °C (short‑term) – continuous 80 °C for hot water | Same |
| Standard | ISO 15874‑2 / EN 12201‑3 / UAE‑S 854‑2019 | Same |
| Certifications | ISO 9001, ISO 14001, UAE‑S (formerly ESMA) |
|
Pressure‑Temperature Derating (PN 25)
| Water temperature (°C) | Max. allowable working pressure (bar) |
|---|---|
| 20 °C (cold water) | 25 |
| 40 °C | 23 |
| 60 °C | 19 |
| 80 °C (hot water) | 15 |
| 95 °C (peak) | 10 (short‑term) |
Note: For chilled‑water (≤ 20 °C) the full 25 bar rating can be used. In heating‑circuit applications the system is normally designed for ≤ 80 °C → 15 bar, well within the fitting’s capability.
3. Material Properties (PPR‑c)
| Property | Typical Value |
|---|---|
| Density | 0.90 g cm⁻³ |
| Melt Flow Index (MFI) | 0.30 g / 10 min (230 °C/2.16 kg) |
| Yield stress | ≥ 25 MPa |
| Elongation at break | ≥ 400 % |
| Thermal conductivity | 0.22 W m⁻¹ K⁻¹ |
| Linear expansion | 1.5 × 10⁻⁴ K⁻¹ |
| Impact resistance | ≥ 30 kJ m⁻² (at 23 °C) |
| Chemical resistance | Good to most acids, alkalis, salts; not recommended for strong oxidizers or aromatic solvents. |
4. Standards & Approvals
- ISO 15874 – Plastic pipes & fittings for hot‑ and cold‑water supply – Polypropylene (PP).
- EN 12201 – Plastics piping systems for water supply – Polypropylene.
- UAE‑S 854:2019 – Minimum requirements for PPR piping in the UAE.
- WRAS, KIWA, & DVGW – Optional third‑party food‑grade & drinking‑water approvals (check specific batch).
5. Installation Guidelines
Safety first: Always wear heat‑resistant gloves, safety goggles, and use a properly grounded electric fusion tool. Work in a well‑ventilated area.
5.1 Tools & Equipment Needed
| Tool | Use |
|---|---|
| PPR socket‑fusion machine** (electric heater, 260–280 °C) | Melt the socket interior & pipe outer surface. |
| Fusion‑head** (90 mm & 50 mm sockets) | Match fitting diameters. |
| Pipe cutter / rotary cutter | Cut pipe square. |
| Deburring tool / scraper | Remove burrs & bevel the pipe end. |
| Measuring tape / marker | Ensure correct insertion depth. |
| Fusion timer (or automatic) | Control heating/cooling times. |
| Pressure test pump (water) | Leak‑test after installation. |
| Calibrated torque wrench** (if using compression fittings) | Not needed for fusion – only for mechanical unions. |
5.2 Jointing Method – Socket‑Fusion (the most common for PPR)
| Step | Action |
|---|---|
|
Cut the 90 mm and 50 mm pipes to the required length using a pipe cutter. Ensure a square cut. |
|
Use a deburring tool to remove internal burrs; lightly bevel the outer edge (≈ 2 mm at 15°) to ease insertion. |
|
Insert the pipe into the socket of the reducer to a depth of ≈ 30 mm (90 mm side) and 24 mm (50 mm side). Mark the pipe at the socket face. |
|
Turn on the socket‑fusion heater; let it reach the preset temperature (260 °C ± 5 °C). |
|
Place the 90 mm pipe into the 90 mm socket and the 50 mm pipe into the 50 mm socket simultaneously. Apply a gentle axial force to ensure full contact with the heated surfaces. |
|
Hold the components in place for the recommended heating time (see manufacturer chart – typically 8 seconds for 90 mm, 6 seconds for 50 mm at 260 °C). |
|
Quickly withdraw the pipe and fitting from the heater and mate them immediately. Hold the joint under light pressure for 6 seconds (cooling time) to allow the joint to solidify. |
|
Allow the joint to cool naturally (no water quenching) for at least 5 minutes before handling or pressure testing. |
|
Inspect the joint for a uniform “flash” of melted material around the socket. Any gaps or voids indicate insufficient heating or improper insertion. |
|
Pressurize the system (typically 1.5 × design pressure, e.g., 1.5 × 10 |
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