Zer osagarri erabiltzen diren PPR hodietan? Nola lotzen dira PPR hodiak?

Eraikuntzako ur-hornidura eta drainatze-sisteman, HVAC eta industria fluidoen garraioa, PPR (ausazko kopolimero polipropilenoa) pipe and fitting has become the mainstream choice for its corrosion resistance, eskalatzearen aurkakoa, bizitza luzea eta beste ezaugarri batzuk. Hala ere, an efficient and reliable pipeline system not only requires high-quality pipes, but also relies on scientifically designed parts combination and standardized construction technology.

PPR Pipe System Essential Aosagarriak Details 

The scientific selection of pipe fittings is the key to ensure the tightness and functionality of the system. The following are the six core fittings classification and selection guidelines:

1. Akoplamendua

Funtzioa: linear extension of pipes or repair of local damage

Technical parameters:

Pressure grade needs to match the pipe (common S5/S4/S3.2 series)

Diameter range DN20-DN160, suitable for different flow requirements

Engineering application scenarios:

Extension reconstruction of main pipeline

Quick replacement of damaged pipe section (need to be cut accurately with pipe breaker)

2. 90°/45° Elbow

Hydrodynamic optimization design:

Smooth inner wall transition, reduce the pressure loss caused by turbulence (measured pressure drop <0.03MPa@2m/s)

R =1.5D Large radius of curvature reduces cavitation risk

Installation precautions:

Hot and cold water systems need to distinguish gray/white identification

Support spacing ≤50cm to prevent thermal expansion stress concentration

3. Equal/Reducing Tee

Branch system design points:

The diameter ratio between the main pipe and the branch pipe is ≤0.8 to ensure the uniformity of the shunt

The hot water system preferentially adopts the structure with loose joint, which is convenient for later maintenance

Industria-aplikazio bereziak:

Food grade 316 stainless steel lining tee (acid and alkali corrosion resistance)

Tee with sampling valve (pharmaceutical industry online testing requirements)

4. Flange Adaptor

Cross-material connection solutions:

EPDM rubber seal ring, suitable for -20℃~110℃ working conditions

PN16/PN20 flange pressure rating matching ISO standard

Construction specifications:

 Flange bolts should be progressively tightened diagonally (torque values refer to DIN 2501)

 Flange surface cleanliness requirements Sa2.5 (no oil, oxide layer)

5.Bukaerako kapa

Key components of pressure test:

Pressure test value =1.5 times working pressure, holding time ≥30min

Special pressure test cap with pressure gauge interface is recommended

Temporary plugging scheme:

Outdoor pipes should be made of UV anti-aging material (to avoid UV embrittlement)

6. Batasuna

Modular maintenance design:

Quick disassembly structure, supporting tool-free disassembly (patented snap design)

Medical grade system needs to be equipped with no dead cavity sanitary loose joint

Selection calculation:

Rated number of cycles ≥5000 (refer to EN 1254-3)

PPR Pipeline Hot Melt Connection Process Analysis

Professional grade hot melt welding is the core process to ensure zero leakage of pipeline system, and the following standardized operations should be strictly implemented:

1. Preparation stage before construction

Environmental control:

Operating temperature 5℃-40℃, humidity ≤80% (low temperature environment need to enable preheating program)

Set the dust isolation area (cleanliness level ISO 14644-8)

Equipment calibration:

Temperature controller error ±3℃ (check before starting daily)

Mold specification and pipe diameter matching tolerance ≤0.1mm

2. Six-step standardized operation method of hot melt welding 

1. Precise cutting

Use a special cutter to ensure that the end face perpendicality is ≤1°

Deburring treatment (45° chamfer recommended)

2 Mark the depth

Set the insertion depth by tube diameter (DN20=14mm, DN25=16mm, eta abar)

Use an adjustable scriber to ensure marking accuracy

3. Set heating parameters

Refer to the welding parameter table (example: DN25 pipe, 260± 5℃, heating time 7s)

Ambient temperature compensation (±1s/5℃) is required in winter and summer.

4. Synchronous welding

Two people work together to ensure that the pipe fittings advance in sync

Fused ring formation standard: uniform bright no bubbles

5. No stress butt joint

No rotation for linear insertion (deviation Angle ≤2°)

Maintain pressure until end of cooling time (30s for DN25)

6. Kalitatearen ikuskapena

Welding seam width detection (standard value: pipe diameter ×0.15+0.5mm)

Profile inspection: the fusion surface should reach 2/3 of the thickness of the pipe wall

Solutions Fedo Special Working Conditions

Small space welding:

Right-angle welding machine (minimum operating space 30×30cm)

Use a reflector to observe the welding state

Working at height specification:

Build welding platform in accordance with OSHA standards

Equipped with anti-fall device and welding torch attachment

PPR Pipeline System Advanced Optimization Strategy

Professional technical solutions to improve system reliability:

1. Hydraulic calculation optimization

Pressure drop simulation using professional software such as PipeFlow

Branch pipe flow rate control: cold water ≤2m/s, hot water ≤1.5m/s

2. Thermal expansion compensation design

Fixed bracket spacing formula: L=0.15×ΔT×α×D

(ΔT= temperature difference, α= coefficient of linear expansion 0.15mm/m·K)

-Ω type compensator setting spacing: riser each layer, horizontal pipe ≤6m

3. Antibacterial pipeline system

Nano silver ion modified pipe (bakterioen aurkako tasa > 99.9%)

UV disinfection pipe special model (weather resistance grade UV-A)

Why choose our PPR solution?

As a piping system supplier with NSF, WRAS and CE certification, we provide:

Homogeneous tubing manufactured from HAUSEXX production line in Leifen, Alemania

100% pressure-tested precision injection molded pipe fittings

15 years warranty

Hornitzailea

Luoyang Datang Energy Tech Co., Ltd. Txinako fabrikatzaile liderra da kalitate handiko plastikozko hodietan eta osagarrietan espezializatua. puntako produkzio-lerro automatizatuekin hornituta eta talde batek lagunduta 200 profesionalak, baino gehiagoko produktu-lerro zabala eskaintzen dugu 150 types of plastic pipes and fittings designed for water supply and drainage systems, gas-transmisioa, eta zoru berogailu sistemak. Gure produktu nagusiak PVC hodiak eta osagarriak dira, LH (HDPE) Hodiak eta hornidurak, PPR hodiak eta osagarriak, eta PEX zoru berotzeko hodiak.

PVC Hodiari buruzko edozein kontsulta izan behar baduzu,PPR hodia & HDPE hodia, mesedez, ez izan zalantzarik gurekin harremanetan jartzeko!

Tel.:0086-183 3790 0677

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Posta elektronikoa: sales@pipesandfittings.net