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What fittings are used in PPR pipes?

1. Introduction to PPR Pipe Fittings

  • Core components for connecting PPR (Polypropylene Random Copolymer) pipe systems, enabling connections, redirections, control, and protection
  • Material Advantages: High temperature resistance (≤95℃), corrosion resistance, non-toxic, compliant with standards like GB/T 18742 and ISO
  • Key Role: Ensure leak-proof sealing, pressure capacity, and long-term system reliability

2. Major Fitting Categories and Functions

2.1 Connection & Redirection Fittings
  • Couplings
    • Function: Straight connection for two same-diameter PPR pipes
    • Types: Equal couplings, reducing couplings (for diameter transitions)
    • Materials: Pure PPR or insert-style (brass/stainless steel threaded inserts)
  • Elbows
    • Function: Change pipe direction, common angles 90°/45°, customizable for special angles (30°/60°)
    • Design: Large-radius elbows minimize flow resistance; insert elbows for metal pipe compatibility
  • Tees & Crosses
    • Function: Branch or merge pipe flows
    • Types: Equal tees, reducing tees (different main/branch diameters), 顺水 tees (low-flow 冲击 design)
2.2 Control & Regulation Fittings
  • Valves
    • Ball Valves: Quick on/off with 90° handle rotation, ideal for frequent operations
    • Globe Valves: Flow regulation via disc adjustment, superior sealing performance
    • Check Valves: Prevent backflow with spring-loaded discs (e.g., water heater systems)
  • Union Fittings
    • Function: Removable connections for easy maintenance and repairs
    • Structure: Composed of nuts, gaskets, and bodies, compatible with PPR and metal pipes
2.3 Transition & Adaptation Fittings
  • Material Adapters
    • PPR to Metal (Copper/Steel): Threaded inserts (male/female) for plastic-metal connections
    • PPR to PEX/PB: Special hot-melt adapters ensuring chemical compatibility between plastic pipes
  • Size/Shape Converters
    • Reducers: Diameter transitions (e.g., De25 to De20)
    • End Caps: Seal pipe ends temporarily or permanently
2.4 Protection & Installation Fittings
  • Pipe Clamps & Supports
    • Function: Secure pipes, reduce vibration and displacement; recommended spacing: 0.8-1m for horizontal pipes, 1-1.5m for vertical
    • Materials: Plastic clamps (lightweight), metal brackets (heavy-duty)
  • Insulation & UV Protection
    • Thermal Insulation: Reduce heat loss in hot water systems, using PE/EVA materials
    • Sun Protection Sleeves: Prevent PPR aging in outdoor installations, extend service life

3. How to Choose the Right PPR Fittings?

  1. Match Pipe Specifications
    • Nominal diameter (De16-De110) and pressure rating (PN1.0-PN2.5MPa) must align with pipes
    • Example: PN2.5MPa high-pressure systems require same-rated insert elbows
  2. Consider Application Scenarios
    • Hot Water Systems: Prioritize ≥95℃耐温配件,brass inserts for corrosion resistance
    • Industrial Use: Pair with metal flanges or stainless steel inserts for mechanical strength
  3. Certifications & Quality Standards
    • Check for ISO 9001, CE, WRAS, or NSF certifications
    • High-quality fittings feature smooth inner walls (scale resistance) and uniform wall thickness (stable pressure)

4. Typical Applications & Fitting Combinations

  • Residential Water Supply
    • Combo: Equal couplings + 90° elbows + ball valves + unions for kitchen/bathroom layouts
  • Commercial Hot Water Projects
    • Key Fittings: Reducing tees + check valves + insulated clamps for efficient circulation systems
  • Old Building Renovation
    • Transition Solution: PPR-to-copper threaded adapters + unions for retrofitting galvanized steel pipes

5. ifan Pipeline’s One-Stop Fitting Solutions

  • Full Product Range
    • Over 200 standard fittings (couplings/elbows/tees/valves) and custom options (special angles, insert materials)
  • Technical Excellence
    • Inserts made of H59 brass (≥59% copper), passed 200,000-cycle pulse testing (远超国家标准)
    • Nickel-plated surface: Resist electrochemical corrosion for complex water quality
  • Value-Added Services
    • Free system design drawings, custom fittings for DN15-DN1000 industrial projects
    • Ready stock, global delivery within 72 hours (via DHL/UPS)

Conclusion

Selecting the right PPR fittings is crucial for system safety and longevity. From basic connections to complex applications, consider material compatibility, pressure ratings, and installation environments. As a 20-year industry expert, ifan Pipeline offers certified fittings and custom solutions—visit ifanultra.com for free selection guides and technical support.

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IFAN since to 1993, offer PPR,PEX,PVC,HDPE,Brass Fittings,Brass Valve,Brass Bibcocks etc.