Description
Dadex Nikasi upvc Elbow 50mm
Dadex Nikasi local Manufacturer Suppliers in Islamabad Pakistan Contact 0322-3540656 Pressure Fittings, Drain sewer ventilation
What is Dadex Nikasi upvc Elbow 50mm ?
Dadex Nikasi uPVC Elbow 50 mm is a plumbing fitting used to change the direction of a pipe (usually 90° or 45°) in a drainage system.
- Part of Nikasi system (SWV = Soil, Waste & Vent)
- Available in:
- Solvent Joint (cement type)
- Push-Fit / Rubber Ring (Z-joint type)
👉 Common sizes include 50 mm, 75 mm, 110 mm etc.
🧱 2. Material & Construction
- Material: uPVC (Unplasticized Polyvinyl Chloride)
- Type: Rigid, corrosion-resistant plastic
- Color: Light grey (standard for drainage systems)
- Design: Smooth internal bore for better flow
✔ uPVC is:
- Non-corrosive
- Lightweight
-
Chemically resistant
- Long-lasting
📊 3. Technical Specifications (Typical for 50mm Elbow)
| Feature | Specification |
|---|---|
| Diameter | 50 mm (≈ 2 inch) |
| System Type | SWV (Soil, Waste, Vent) |
| Joint Type | Solvent weld or Push-fit |
| Standard | ISO 3633 / EN 1329 / PS 3214 |
| Pressure Rating | Non-pressure (gravity flow) |
| Temperature | Suitable for normal domestic drainage |
| Surface | Smooth internal finish |
👉 Important:
These fittings are NOT for pressurized water supply — only for drainage systems.
🔄 4. Types of Jointing
A. 🧪 Solvent Joint (Permanent)
- Uses uPVC solvent cement
- Creates a chemical weld (permanent bond)
Features:
- Strong & leak-proof
- No movement after fixing
- Best for concealed/internal lines
Installation:
- Clean pipe & fitting
- Apply solvent cement
- Insert pipe with slight twist
- Hold for ~30 seconds
- Cure time ~24 hours
B. 🔵 Push-Fit (Rubber Ring / Z-Joint)
- Uses EPDM rubber gasket
- No glue required
Features:
- Quick installation
- Allows expansion/contraction
- Easy maintenance
Installation:
- Chamfer pipe edge
- Apply lubricant
- Push into socket
- Leave small expansion gap (~10 mm)
🚰 5. Usage & Applications
🏠 A. Drainage System
- Bathroom waste pipes (wash basin, shower)
- Kitchen drainage
- Floor trap connections
🚽 B. Sewer System
- Connects branch pipes to main sewer line
- Used in underground pipelines
- Helps maintain flow direction
🌬️ C. Ventilation System
-
Vent pipes on roof
- Prevents:
- Vacuum in pipes
- Sewer gas accumulation
🌧️ D. Rainwater System
- Downpipes and roof drainage
👉 Elbows help in:
- Turning pipelines around walls/columns
- Connecting horizontal to vertical lines
- Reducing blockage risk (especially 45° elbows)
⚙️ 6. Functional Importance
The elbow is a critical fitting because it:
- Changes direction of flow
- Maintains smooth discharge
- Prevents clogging (better with 45°)
- Helps proper venting of gases
🌟 7. Key Advantages
- ✔ Corrosion resistant (no rust)
- ✔ Smooth flow → less blockage
- ✔ Lightweight & easy to install
- ✔ Chemical resistant
- ✔ Long service life
- ✔ Fire-resistant (self-extinguishing)
⚠️ 8. Important Notes
- ❌ Not for pressure water systems (use pressure-rated fittings instead)
- ✔ Only for gravity drainage (Nikasi system)
- ✔ Proper slope must be maintained in pipes
🧠 Simple Summary
- 50mm uPVC elbow = pipe bend for drainage
- Solvent joint = permanent glue connection
- Push-fit = quick, flexible rubber joint
- Used in drain, sewer & vent systems (not pressure lines)





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