Tee Female 25×1/2″ Brass DADEX PPRc

Description

Tee Female 25×1/2″ Brass

 

DADEX PPRc pipes and fittings local ,, Food Grade, Plumbing Materials, Manufacturer Suppliers in Islamabad Pakistan  Contact 0322-3540656

What is Tee Female 25×1/2″ Brass DADEX PPRc ?

 

The Tee Female 25×1/2″ Brass DADEX PPRc PN 25 is a high-pressure, specialty fitting designed for the Dadex Polydex piping system. It serves as a transition point between the welded PPRc network and threaded metal fixtures like taps, valves, or gauges.

Product Description & Specifications

The “PN 25” rating indicates this fitting is built for high-pressure durability, making it superior to standard PN 20 residential fittings.

• Brand: Dadex (Polydex series)

• Material: High-quality Polypropylene Random (PPR-C) with a nickel-plated lead-free brass insert.

• Size: 25mm (welding socket) x 1/2″ (internal female thread).

• Pressure Rating: PN 25 (capable of handling up to 25 bars of pressure).

• Temperature Range: -4°C to 95°C, suitable for boiling water systems.

• Standards: Conforms to DIN 16962 (fittings) and DIN 8077-8078 (pipes).

• Color: Distinctive green (typical of Dadex Polydex).

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Key Applications

1. HVAC Systems: Used for chilled water networks in central air conditioning and heating systems (including underfloor heating) where corrosion resistance and thermal insulation are vital.

2. Hot & Cold Water Supply: Ideal for high-rise buildings, hotels, and hospitals due to its 50-year service life and antimicrobial properties that prevent bacterial growth.

3. Industrial Use: Suitable for transporting compressed air and various aggressive fluids (acids/alkalis) due to its chemical inertness.

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Installation & Usage Guidelines

The PPRc portion is joined via heat fusion, while the brass portion connects to threaded hardware.

1. The Fusion Process

• Preparation: Cut the 25mm pipe squarely and mark the welding depth.

• Heating: Use a PPRc welding machine set to approximately 260°C. Simultaneously heat the pipe and the 25mm socket of the tee for about 7 seconds.

• Joining: Push the parts together without twisting. Hold firmly for a few seconds to allow the plastic to bond.

2. Threaded Connection

• Sealing: Use Teflon tape (PTFE) or specialized sealing putty on the first few threads of the brass insert.

• Important: Avoid using classical hemp/jute, as it can absorb water and expand, potentially cracking the brass insert over time.

3. Maintenance & Safety

• Pressure Testing: After installation, let the joints cool for at least 30 minutes before conducting a pressure test (typically at 10–15 bar).

• UV Protection: If installed outdoors, the PPRc body should be insulated or painted to protect it from direct sunlight degradation.