Dadex Nikasi Upvc Elbow 50mm 45 degree

Dadex Nikasi UPVC Elbow 50mm 45° is a plumbing fitting from Dadex Eternit Limited (Pakistan), part of their Nikasi uPVC Soil, Waste & Vent (SWV) system.

Description Dadex Nikasi Upvc Elbow 50mm 45 degree

• It is a 45-degree elbow made from high-quality Un plasticized Polyvinyl Chloride (uPVC).
• It allows a smooth change in pipe direction by 45° in drainage, sewer, or ventilation lines.
• The 45° angle reduces the risk of sludge buildup compared to sharper 90° bends, ensuring better flow in waste systems.
• It is a solvent weld (cement joint) type fitting (most common for Nikasi in smaller sizes), though rubber ring/push-fit versions may also exist.
• Color: Typically light grey.
• Designed for non-pressure applications in building drainage systems.

Key Applications (Usage)

• Soil & Waste Drainage: Carries foul and surface water with solids from toilets, sinks, etc.
• Ventilation (Vent Pipes): Part of the venting system to maintain air pressure and prevent traps from siphoning.
• Sewer and Rainwater: Horizontal-to-vertical transitions or gentle bends in drainage stacks.
• Suitable for residential, commercial, and industrial buildings.
• Nikasi system is engineered for low blockage risk and long-term durability in waste lines.

Specifications

• Size: 50mm (nominal diameter, compatible with 50mm Nikasi pipes).
• Angle: 45°.
• Standards:
  • Nikasi pipes: ISO 3633:2002(E) / EN 1329:1999 and PS 3214:1992.
  • Fittings (solvent cement): ISO 3633:2002(E) / EN 1329:1999.
• Range: Available in 40mm, 50mm, 75mm, 110mm, etc.
• Properties:
  • Lightweight and easy to handle.
  • Corrosion-resistant and chemically inert.
  • Resistant to organic growth.
  • Self-extinguishing (fire resistant).
  • Non-conductive to electricity.
  • Low flow resistance.
  • Temperature resistance: Suitable for typical building drainage temperatures (generally up to 60°C or more).

Installation

Nikasi 50mm fittings are primarily installed using solvent cement welding (for sizes up to 75mm commonly):

1. Cut the pipe square and deburr/remove burrs.
2. Dry fit the elbow and pipe to check alignment and insertion depth.
3. Apply primer (recommended) followed by solvent cement evenly on the pipe spigot and fitting socket.
4. Join immediately with a quarter-turn twist and hold for a few seconds.
5. Wipe excess cement and allow proper curing time (varies with temperature; follow manufacturer guidelines).
6. For vertical stacks or longer runs, incorporate rubber ring joints at intervals to accommodate thermal expansion/contraction.

Tips:

• Ensure proper support and alignment.
• The system must include expansion provisions.
• Test the line for leaks after installation.
• Use only compatible Nikasi solvent cement.

Note: Solvent joints are permanent; rubber ring joints allow some flexibility for maintenance.

Advantages

• Durable and leak-proof when installed correctly.
• Cost-effective and widely available in Pakistan.
• Smooth interior for better flow and reduced clogging.
• Easy and fast installation compared to traditional materials.