Elbow 110mm RAKtherm PPRc

Description

Elbow 110mm

 

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

 

What is Elbow 110mm RAKtherm PPRc ?

 

The Elbow 110mm RAKtherm PPRc PN 25 is a high-pressure, 90° socket-fusion elbow fitting made from third-generation polypropylene random copolymer (PPRc), imported from the UAE and rated for hot and cold potable water HVAC systems up to 25 bar at 20°C.

Product description

RAKtherm PPRc elbows are part of a German-standard PP-R piping system manufactured in Ras Al-Khaimah, UAE, for pressurized hot/cold water distribution in residential, commercial, and industrial buildings. The 110 mm size is used on main risers and large branch lines in HVAC water supply, chilled water, and heating circuits.raktherm+2

• Type: 90° socket elbow (fusion-welded)

• Size: 110 mm outer diameter (OD)

• Pressure class: PN 25 (25 bar nominal at 20°C)

• Material: PPRc (polypropylene random copolymer), food-grade, corrosion-resist

• Origin: UAE (RAKtherm / Gulf Plastic & Converting Industries – Tahweel™)

Key specifications (110 mm, PN 25)

From RAKtherm’s PN 25 pipe data (which defines the matching fitting dimensions per DIN 8077/8078)

• Outer diameter (OD): 110 mm

• Wall thickness (PN 25, SDR ~6): ≈ 18.3 mm (for PN 25 pipe; fittings are designed to match this series)raktherm+1

• Internal diameter (ID): ≈ 73.4 mm (for PN 25 pipe)

• Pressure rating:

  • 25 bar at 20°C

  • ~19.6 bar at 70°C (25-year service)

  • ~15.2 bar at 70°C for 50-year service (depending on exact conditions)raktherm+1

• Temperature range:

  • Continuous: 0–70°C (design basis)

  • Short-term peaks: up to 95–100°C allowed, with reduced life at higher temperaturesarcorporation+2

• Standards: DIN 8077/8078 (PP-R pipe & fitting dimensions and quality), DVGW, ISO 9001, BS 6920 (potable water contact)

For HVAC use, PN 25 is typically selected for:

• High-rise risers

• Pump discharge and main circulation lines

• Systems with higher static head or pressure surges

Material and performance characteristics

• Corrosion & chemical resistance: PPRc is inert to most domestic chemicals, detergents, and many industrial fluids; no internal corrosion or scaling.

• Hygiene: Food-grade, non-toxic, no heavy metal leaching; suitable for potable water.

• Thermal behavior:

  • Designed for continuous operation up to 70°C; short peaks to 95–100°C acceptable.raktherm+1

  • Linear expansion coefficient for standard PPR ≈ 0.15 mm/m·K; for hot-water lines, expansion loops or offsets are required.

• Service life: >50 years under rated pressure/temperature conditions.raktherm+1

Typical applications in HVAC water systems

• Hot water circulation: Boiler outlets, heat exchangers, radiator/FCU connections, domestic hot water risers.

• Chilled water & condenser water: Primary and secondary loops, pump suction/discharge, equipment connections.

• Hydronic heating/cooling: Underfloor heating manifolds, fan coil units, air handling unit coils.

The 110 mm elbow is commonly used where large-diameter mains change direction (e.g., plant room headers, vertical-to-horizontal transitions, riser offsets).

Installation overview (socket fusion)

RAKtherm PPRc fittings, including the 110 mm elbow, are joined by socket fusion welding using dedicated heating tools.raktherm+1

Required tools & preparation

• PPR fusion welding machine with 110 mm heating die (heater temperature ≈ 260°C)

• Pipe cutter (guillotine or rotary) for clean, square cuts

• Deburring tool / chamfering tool

• Cleaning cloth (alcohol or clean dry cloth)

• Marking tool or depth gauge to mark fusion depth on pipe

Step-by-step installation

1. Cut pipe to length

   • Cut the 110 mm PPRc pipe square using a proper pipe cutter.

   • Remove burrs and lightly chamfer the pipe end.

2. Mark fusion depth

   • Measure and mark the required insertion depth on the pipe end according to the 110 mm fitting’s socket depth (per RAKtherm welding tables).

3. Clean surfaces

   • Wipe pipe end and fitting socket interior to remove dust, oil, or moisture.

4. Heat pipe and fitting

   • Insert pipe and elbow into the 110 mm heating die simultaneously, without twisting.

   • Heat for the specified time (typically in the range of 30–40 seconds for 110 mm; refer to RAKtherm welding table for exact time).

5. Join

   • Remove pipe and fitting together from the heater.

   • Immediately push them together in a straight line until the marked depth is reached. Do not twist.

   • Hold firmly for the cooling time specified for 110 mm (usually several minutes) before releasing or stressing the joint.

6. Support & alignment

   • Use appropriate pipe clamps/brackets at recommended intervals (closer spacing for hot water and vertical runs).raktherm+1

   • Allow for thermal expansion in hot water lines using offsets, loops, or expansion joints as per design.

7. Pressure testing

   • After installation and adequate cooling, perform hydrostatic pressure testing as per project specs (commonly 1.5× design pressure for a defined duration).

Usage guidelines for HVAC systems

• Design pressure/temperature: Ensure system maximum working pressure and temperature do not exceed PN 25 ratings at the operating temperature (use RAKtherm service-life tables for long-term design).

• Hot water lines: Prefer RAKtherm Stabi (aluminum composite) or reinforced fiber pipes for exposed hot water to reduce linear expansion; elbows remain standard PPRc PN 25.raktherm+1

• Insulation: Insulate hot water pipes to limit heat loss and cold water pipes to prevent condensation, per DIN 4140 / project specs.

• Support spacing: Follow RAKtherm’s recommended clamp intervals for 110 mm PN 25, with closer spacing for vertical runs and hot water.