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PP-R Equal Coupler for Potable Water Systems

1.Durable Material: Constructed from high-quality PP-R, the equal coupler offers exceptional resistance to corrosion, chemical degradation, and thermal expansion. This ensures longevity and reliability in both hot and cold water systems, making it suitable for residential, commercial, and industrial applications.
2.Precision Design: The equal coupler features uniform inner diameters for seamless pipe connections, minimizing turbulence and pressure loss. This reduces the potential for leaks and ensures a consistent flow throughout your system.
3.Versatile Application: Perfect for potable water supply lines, radiant floor heating, and industrial fluid transfer systems. Its versatility makes it an indispensable component for installations, expansions, or repairs across various settings.
4.Easy Installation: Lightweight and easy to handle, the PP-R Equal Coupler is installed using a heat fusion process, creating a strong, leak-proof bond without the need for adhesives. This method simplifies the installation procedure and enhances joint integrity.
5.Eco-Friendly Construction: Crafted from non-toxic, recyclable materials, this coupler supports environmentally sustainable practices, contributing to a greener building approach.
Availability:
Quantity:
Specification Z1  H Packing quantity
S20 4 35.5 800
S25 3.5 39.5 480
S32 4 44 270
S40 4.5 48.5 350
S50 4.5 54.5 192
S63 3 61 120
S75 3.5 69.5
S90 4.5 80.5
S110 4.5 92.5


Product Overview


The PP-R Equal Coupler for Potable Water Systems is a premium plumbing fitting engineered to create secure, permanent connections in drinking water distribution systems. Manufactured from PP-RCT (polypropylene random copolymer with raised temperature resistance) compliant with EN 15874:2019 and NSF/ANSI 61 standards, this coupler ensures complete safety for human consumption with zero leaching of harmful substances. Available in sizes from 20mm to 110mm OD, it delivers exceptional performance in both cold and hot water applications, with a service life exceeding 50 years under continuous use .


Rated for 25 bar (362 psi) working pressure at 20°C and 8.5 bar (123 psi) at 70°C, the coupler outperforms standard PP-R fittings by 37% in flow rate capacity and 28% in strength-to-weight ratio. The one-piece molded construction eliminates potential leak paths, while the precision design ensures uniform wall thickness with ±0.1mm tolerances. Its compatibility with standard PP-R installation techniques makes it suitable for both new construction and retrofitting projects in residential, commercial, and healthcare facilities .


PP-R Equal Coupler for Potable Water Systems


Product Features


Advanced Material Technology

The PP-RCT material incorporates nucleating agent technology that enhances crystalline structure, providing 37% higher flow rates compared to standard PP-R due to improved pressure loss characteristics. It retains 70% of its room-temperature strength at 95°C, compared to 50% retention in standard PP-R, enabling continuous hot water service without degradation. The material is certified under NSF/ANSI 372 for lead-free content, meeting strict state requirements across North America .


Thermal and Pressure Performance

Designed for hot and cold water service, the coupler maintains pressure integrity across a wide temperature range: 25 bar at 20°C, 16 bar at 50°C, 8.5 bar at 70°C, and 4.5 bar at 95°C. It handles short-term temperature peaks up to 110°C during system disinfection, making it suitable for healthcare and food service applications requiring periodic sanitization. The low thermal expansion coefficient (0.15 mm/m·K) reduces stress on joints during temperature cycles.


Hygienic Design

The coupler features a smooth inner surface (Ra <0.008mm) that minimizes friction loss and prevents scaling and biofilm formation, maintaining water quality and flow rates over time. It is completely resistant to chlorine and common water treatment chemicals, ensuring long-term integrity in municipal water systems. The fusion zones are designed to prevent crevices where bacteria could accumulate, supporting compliance with strict hygiene standards in healthcare facilities .


Applications


This premium coupler provides safe, efficient connections in potable water systems:


Residential Plumbing: Joins PP-RCT pipes in kitchens, bathrooms, and laundry rooms of homes and apartments, supporting both cold and hot water lines.

Commercial Facilities: Connects drinking water lines in hotels, restaurants, and offices with high hygiene requirements and varying water temperatures.

Healthcare Facilities: Ensures safe water distribution in hospitals, clinics, and laboratories where water purity and system hygiene are critical.

Food Service: Provides compliant connections in restaurants, food processing plants, and commercial kitchens requiring frequent hot water use .


FAQ


What makes PP-RCT better than standard PP-R?

PP-RCT material offers 37% higher flow rates, 28% lighter weight, and superior temperature resistance compared to standard PP-R, maintaining 70% of its strength at 95°C versus 50% retention in standard PP-R .


Is it suitable for drinking water systems?

Yes. The coupler is certified to NSF/ANSI 61 and EN 15874 standards, ensuring no leaching of harmful substances into drinking water. It contains no heavy metals, phthalates, or toxic additives .


What is the maximum operating temperature?

It operates continuously at 95°C with a pressure rating of 4.5 bar, and handles short-term (≤1 hour) temperature peaks up to 110°C during system sanitization procedures.


How is it installed?

Installation uses socket fusion with temperature-controlled tools set to 260±10°C, creating permanent, leak-free joints stronger than the pipe itself. The fusion parameters are identical to standard PP-R for easy integration into existing installation protocols .


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Zhe Jiang Longye Pipes Industry Co., Ltd. is specilalized in producing PP-R pipes; pipe fittings, HD-PE water-supplying pipes, heatmelting socket pipe fittings, plastics connecting pipe fittings and water separators.
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