Elbow 75mm 45* RAKtherm PPRc

Description

Elbow 75mm 45*

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

What is Elbow 75mm 45* RAKtherm PPRc ?

The RAKtherm PPRc $75\text{ mm}$ 45° Elbow (PN25) is a premium-tier, high-pressure thermofusion fitting designed for heavy-duty commercial plumbing, district cooling, and mechanical HVAC water supply systems.

Manufactured by RAKtherm in Ras Al Khaimah, UAE, this fitting is engineered using advanced Polypropylene Random Copolymer (PPR-80/PPRc) to withstand extreme thermal and mechanical stresses.

1. Description & Core Applications

The 45° elbow serves as a critical directional transition component. Unlike 90° bends, the 45° angle drastically reduces dynamic pressure drops and fluid turbulence, making it ideal for high-velocity HVAC chiller lines, condenser water loops, and booster pump manifolds.

Hot & Cold Water Systems: Excellent for high-temperature potable hot water distribution and main risers.
HVAC Systems: Used extensively in chilled water lines, cooling tower piping, and hydronic heating systems.
Pressure Rating (PN25): Specially engineered to handle nominal working pressures up to 25 bar (at $20^\circ\text{C}$ ), ensuring a safety factor in high-head commercial structures.

2. Technical Specifications Elbow 75mm 45* RAKtherm PPRc

Feature	Specification
Brand	RAKtherm (Origin: UAE)
Material	Polypropylene Random Copolymer (PPRc / PPR-80)
Nominal Outer Diameter ( $d$ )	$75\text{ mm}$
Angle	45 Degrees
Pressure Class	PN25 (SDR 5 / Heavy-Duty High-Pressure)
Continuous Temp. Range	$10^\circ\text{C}$ to $90^\circ\text{C}$ (Peak short-term limits up to $100^\circ\text{C}$ )
Connection Method	Socket Fusion (Thermofusion Welding)
Service Life	Minimum 50 years under standard operating designs
Certifications	DVGW, SKZ, HY, TUV (Conforming to DIN 8077/8078 standards)

3. Installation Protocol (Socket Fusion)

Because $75\text{ mm}$ is a large-diameter PPRc fitting, joint integrity depends entirely on precise heat fusion parameters. Hand-held welding is difficult at this size; utilizing a mechanical alignment fusion machine or a stable two-person manual weld is highly recommended.

Step-by-Step Installation:

1.Cut and Clean:Preparation.

Cut the $75\text{ mm}$ PPRc pipe perfectly square using a professional pipe cutter. Chamfer the outer edge slightly and thoroughly clean both the pipe end and the internal socket of the 45° elbow with an alcohol-based cleaner to remove grease, dust, or moisture.

2.Mark the Insertion Depth:Safety Margin.

Measure and mark an insertion depth of $30\text{ mm}$ from the edge of the pipe. This mark prevents pushing the pipe too deep into the elbow, which can restrict water flow or choke the joint internally.

3.Heat the Joint:Exact Timing is Crucial.

Set your fusion welder to $260^\circ\text{C} \pm 10^\circ\text{C}$ . Push the pipe and the 45° elbow simultaneously into the $75\text{ mm}$ welding dies without twisting.

Heating Time: 30 seconds (Do not start counting until the pipe and fitting reach full depth on the welding tools).

4.Join and Align:No Twisting.

Remove both parts from the heater dies and immediately push the pipe smoothly into the socket of the elbow until the depth mark is reached. Hold the joint completely still for 8 seconds to let the molten plastic consolidate.

5.Cooling Period:Setting the Weld.

Allow the fused joint to cool naturally for at least 8 minutes before putting any mechanical stress, alignment adjustments, or pressure testing on the piping system. Never use water to force-cool the joint.

4. Key Usage & Engineering Guidelines

Expansion Loop Calculations: While PPRc has lower thermal conductivity than metal, continuous hot water circulation causes linear expansion. Ensure that long $75\text{ mm}$ runs have adequate expansion loops or are supported by RAKtherm’s fiber-reinforced or stabi composite lines to reduce physical warping.
Hanger & Bracket Spacing: For horizontal runs carrying fluids at $60^\circ\text{C}$ , place support brackets roughly every $1.3\text{ to }1.5\text{ meters}$ to prevent sagging under wet weight.
Chemical Stability: The inner bore features an ultra-smooth surface. This eliminates scaling, reduces pressure loss, resists aggressive chemicals, and prevents corrosion over decades of constant HVAC glycol/chilled water cycles.

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