What is PPR Fitting 103 Female Union M18?
PPR Fitting 103 Female Union M18 is a specialized polypropylene random copolymer connector designed for professional plumbing systems. This fitting features an M18 thread specification with female union configuration. It provides reliable connections in both residential and commercial applications.
The 103 model designation indicates specific dimensional standards. These fittings excel in hot and cold water distribution systems. They offer superior chemical resistance and long-term durability.
Key Features of PPR Female Union Fittings
Состав материала
PPR fittings use high-grade polypropylene random copolymer. This material withstands temperatures up to 95°C continuously. It resists corrosion from chemicals and minerals found in water systems.
Thread Specification
The M18 thread follows metric standards for precise connections. Female union design allows easy installation and maintenance. Thread pitch ensures leak-proof sealing under pressure.
Номинальное давление
Standard pressure ratings reach 25 bar at 20°C. Performance decreases proportionally with temperature increases. Maximum working pressure at 95°C is approximately 6 bar.
Installation Applications
Residential Projects
PPR Female Union M18 fittings work perfectly in home plumbing systems. They connect pipes in bathrooms, kitchens, and utility rooms. The fittings handle both hot water heaters and cold water supplies.
Коммерческие здания
Office buildings rely on these fittings for reliable water distribution. Hotels use them in guest room plumbing systems. Restaurants depend on their chemical resistance for kitchen applications.
Industrial Applications
Manufacturing facilities choose PPR fittings for process water systems. Chemical plants appreciate their corrosion resistance. Food processing facilities value their hygienic properties.
Технические характеристики
Dimensional Details
- Thread size: M18 x 1.5mm pitch
- Body material: PPR Grade 3
- Seal material: EPDM rubber
- Connection type: Female union
- Standard: ISO 15874
Performance Parameters
Operating temperature range spans -10°C to +95°C. Thermal expansion coefficient is 0.15 mm/m·K. Thermal conductivity measures 0.24 W/m·K.
The fittings maintain structural integrity for over 50 years under normal conditions. They resist UV degradation when used in outdoor applications with proper protection.

Installation Guidelines
Preparation Steps
Clean pipe ends thoroughly before installation. Remove any debris or manufacturing residue. Check thread compatibility with existing system components.
Connection Process
Apply appropriate thread sealant or tape. Hand-tighten the connection initially. Use proper tools for final tightening without over-torquing.
Testing Procedures
Pressure test the system at 1.5 times working pressure. Hold pressure for 30 minutes minimum. Check all connections for leaks before system activation.
Advantages Over Alternative Materials
Compared to Metal Fittings
PPR fittings resist corrosion better than steel or brass. They cost less than copper alternatives. Installation requires fewer specialized tools.
Versus Other Plastics
PPR offers superior temperature resistance compared to PVC. It maintains flexibility better than CPVC at low temperatures. Chemical resistance exceeds many other plastic materials.
Quality Standards and Certifications
PPR Fitting 103 Female Union M18 meets international quality standards. ISO 15874 certification ensures consistent performance. CE marking indicates European conformity compliance.
Manufacturing follows strict quality control protocols. Each batch undergoes pressure testing and dimensional verification. Material composition testing confirms PPR grade specifications.
Purchasing Considerations
Quantity Planning
Calculate exact fitting requirements before ordering. Consider spare fittings for future maintenance needs. Bulk purchases often provide cost savings.
Supplier Selection
Choose suppliers with proven track records in PPR fittings. Verify certifications and quality documentation. Ensure availability of technical support services.
Cost Factors
Price varies based on quantity and specifications. Quality certifications may increase initial costs. Long-term durability provides excellent value proposition.
Custom Manufacturing Options
Professional plumbing projects sometimes require modified specifications. Custom thread sizes accommodate special applications. Modified pressure ratings meet specific system requirements.
Lead times for custom fittings typically range 2-4 weeks. Minimum order quantities apply for custom specifications. Engineering support helps optimize fitting selection.
Maintenance and Lifespan
PPR fittings require minimal maintenance throughout their service life. Periodic visual inspections ensure continued performance. Replace fittings showing signs of cracking or deformation.
Proper installation extends fitting lifespan significantly. Avoid over-tightening during installation. Protect fittings from mechanical damage and excessive heat.
Заключение
PPR Fitting 103 Female Union M18 provides reliable solutions for professional plumbing applications. Superior material properties ensure long-term performance. Professional installation guarantees optimal system operation.
Choose certified suppliers for guaranteed quality and performance. Consider custom options for specialized applications. Proper installation and maintenance maximize fitting lifespan and system reliability.
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