Elbow 75mm RAKtherm PPRc

Description

Elbow 75mm

 

RAKtherm imported PPRc, Food graded third generation Poly propylene Random with Co-polymer
materials. contact 0322-3540656

 

 

 

What is Elbow 75mm RAKtherm PPRc ?

 

Elbow 75mm RAKtherm PPRc PN 25 is a polypropylene random copolymer (PP-R/PPRc) pipe fitting used to change the direction of a 75 mm PPRc pipeline, typically by 90°. It is suitable for hot- and cold-water distribution and can also be used in heating/HVAC water networks where the design temperature and pressure are within the manufacturer’s limits. RAKtherm states that its PPR system is manufactured to DIN 8077/8078 and is intended for hot/cold water and chilled/heating-water applications.

RAKtherm is manufactured in the United Arab Emirates by The Hashim Industry, with its corporate headquarters/manufacturing operation in Ras Al Khaimah.

1. Product description

The fitting is essentially a 75 mm PPRc directional elbow. Instead of bending the pipe itself, the elbow provides a controlled change in direction while maintaining a continuous PPR piping system.

The connection is normally made by heat/socket fusion: the outside of the pipe and inside of the fitting socket are heated and then joined, producing a homogeneous PPR joint. RAKtherm specifically identifies fusion welding as a method that produces a sealed, leak-resistant connection.

2. Main specifications

RAKtherm gives its PPR system a continuous temperature range of 0–90°C, with short-term peak temperatures up to 100°C.

For the corresponding 75 mm PN25 pipe, RAKtherm catalogue information lists approximately 15.1 mm wall thickness and 44.8 mm internal diameter. These are pipe dimensions, not necessarily the dimensions of the elbow itself.

Important: PN25 is a nominal pressure classification; it should not be interpreted as 25 bar at every temperature. Allowable working pressure decreases as PPR temperature increases, so the actual HVAC design must use the manufacturer’s pressure/temperature rating and the project specification.

3. Why it is suitable for HVAC water supply

The 75 mm elbow is useful when an HVAC or plumbing pipeline needs to turn while maintaining the same nominal pipe diameter.

Typical applications include:

• Chilled-water supply and return
• Heating-water circuits
• Hot-water distribution
• Cold-water distribution
• Pump discharge and distribution lines
• Water risers
• Plant-room piping
• Commercial and residential water networks
• Boiler/radiator connections
• Underfloor heating networks

RAKtherm specifically lists boilers, radiator networks, pumps, risers, manifolds, underfloor heating and various residential/commercial water-distribution applications among its PPR applications.

4. Installation procedure

1 — Prepare the pipe
Cut the 75 mm PPR pipe squarely using an appropriate PPR pipe cu

2 — Clean the surfaces
Make sure the pipe end and elbow socket are clean and free from dirt, moisture and contamination.

3 — Mark insertion depth
Mark the appropriate insertion depth on the pipe according to the RAKtherm fusion-welding procedure/tooling.

4 — Heat the components
Use the correct PPR fusion-welding machine and appropriately sized heating tools for the 75 mm pipe/fitting.

5 — Join the elbow
After heating, remove the pipe and fitting from the heating tool and push them together axially without twisting.

6 — Hold and cool
Keep the joint stationary during the initial cooling period. Do not apply mechanical stress until the joint has adequately cooled.

 7 — Inspect the joint
Check that the fusion bead is uniform around the joint and that the elbow is correctly aligned.

 8 — Pressure test
After completing the network, conduct the specified pressure/leak test before concealing or commissioning the piping.

RAKtherm emphasizes that its welding procedure and appropriate welding tools are important for establishing consistent, structurally sound joints.

5. Installation precautions

For a professional HVAC/plumbing installation:

• Do not rotate the fitting while making the fusion joint.
• Keep the fusion surfaces clean and dry.
• Use the correct heating tool and temperature specified by RAKtherm.
• Avoid overheating the pipe/fitting.
• Support 75 mm pipe according to the project’s support-spacing requirements.
• Account for thermal expansion in hot-water systems.
• Protect PPR from unsuitable prolonged UV exposure unless using an appropriate UV-resistant system.
• Do not exceed the applicable pressure-temperature rating.
• Avoid mixing components from different manufacturers unless compatibility and specifications have been verified.

RAKtherm also notes that PPR has good corrosion, scale and chemical resistance and is lightweight compared with many traditional piping materials.

6. Advantages

Leak-resistant fusion joints: The pipe and fitting become effectively one fused connection when properly welded.

Corrosion-free: PPR does not suffer from the conventional corrosion associated with metallic piping.

Smooth internal surface: Helps reduce friction and pressure losses compared with rougher internal surfaces.

Good chemical resistance: RAKtherm identifies PPR as resistant to many chemicals and suitable for demanding environments.

Suitable for hot and cold water: The manufacturer’s PPR system is designed for these applications.

Long service life: RAKtherm states a service life of up to 50 years under appropriate conditions.

Lightweight: Easier transportation and installation than many metal systems.

7. HVAC usage example

A typical HVAC chilled-water arrangement might be:

75 mm PPRc pipe → 75 mm PPRc Elbow → 75 mm PPRc pipe

The elbow allows the pipeline to turn around a wall, column, plant-room obstruction, pump connection or other building-services element without using a fabricated metal bend.

For a hot-water system, the same principle applies, but the designer must check operating temperature, pressure, thermal expansion and pipe support before selecting PN25 PPRc.

8. Overall assessment

Elbow 75mm RAKtherm PPRc PN25 imported from UAE is a heavy-duty PPRc directional fitting for 75 mm hot/cold-water and suitable HVAC water-piping systems. Its main benefits are heat-fusion joining, corrosion resistance, low maintenance, chemical resistance and suitability for long-term water distribution. RAKtherm’s published PPR technology specifies DIN 8077/8078 manufacturing conformity and suitability for chilled/heating-water networks.