Product Introduction

Our product range includes Coupling, Reducer, Male Threaded Coupling, Female Threaded Coupling, Elbow, Male Threaded Elbow, Female Threaded Elbow, Tee, Female Threaded Tee, Six-Way Fitting, Reducing Tee, Orthodrome Elbow, Right Elbow, Left Elbow, and Handheld Rechargeable Electro-Hydraulic Clamping Tool. These fittings are manufactured from premium brass CW617N through hot forging and precision machining, ensuring dimensional accuracy, leak-proof performance, and compatibility with various pipe materials. The bright nickel plating provides superior corrosion resistance, making them ideal for residential, commercial, and industrial plumbing and heating systems.

Product Description

POLYGON Brass Press Fittings utilize a innovative clamping mechanism where the pipe is inserted into the fitting and permanently secured using a specialized electro-hydraulic clamping tool. This technology eliminates the need for soldering, threading, or chemical adhesives, relying instead on precision-engineered brass components to create a permanent, leak-proof connection.
The Brass Press fittings are designed to withstand extreme operating conditions, including temperature fluctuations from -20°C to 110°C and pressure surges up to 16 bar. The product range includes reducing fittings (e.g., Φ20×16) and threaded variants (G1/2", G3/4") for flexible system integration. The compact design allows for space-saving installations, while the nickel-plated surface resists discoloration and corrosion over decades of service. The clamping process is completed within seconds using the handheld electro-hydraulic tool, significantly reducing installation time and labor costs. Additionally, these fittings are compatible with PEX-AL pipes,PERT, PEX,PB providing high pressure resistance and leak prevention in aluminum-plastic pipe connections.

Product Information

Material: Nickel-plated brass
Pressure Rating: PN16 (16 bar at 20°C)
Temperature Range: -20°C to 110°C
Compatibility: PEX, PE-RT, PB, and PEX-AL pipes
Thread Standard: ISO 228-1 (G1/2", G3/4")
Certifications: CNAS laboratory tested, compliant with international standards (e.g., ISO 9001)
Connection Type: Clamping/Press connection with double O-ring seal
Tool Requirement: Handheld rechargeable electro-hydraulic clamping tool

Product Specification

Fitting Type	Dimensions (mm)	Thread Size	Application
Coupling	Φ16, Φ20	-	Straight connection
Reducer	Φ20×16	-	Size transition
Union Coupling	Φ20×3/4F, Φ25×3/4F	-	Size transition
Male Coupling	Φ20×3/4M	G3/4"	Threaded connection
Female Coupling	Φ16×1/2F, Φ20×3/4F	G1/2", G3/4"	Threaded integration
Elbow	Φ16, Φ20, Φ25	-	Direction change
Male Elbow	Φ20×3/4M	G3/4"	Angled threaded connection
Female Elbow	Φ16×1/2F, Φ20×3/4F, Φ25×3/4F	G1/2", G3/4"	Threaded angled connection
Tee	Φ16, Φ20, Φ25	-	Branch distribution
Female Tee	Φ20-1/2F-20	G1/2"	Threaded branch connection
Six-Way Fitting	Φ20×16×16, Φ20×16×20, Φ20×20×20	-	Multi-directional distribution
Reducing Tee	Φ16×20×16, Φ20×16×16, Φ20×16×20, Φ20×20×16, Φ25×16×25, Φ25×20×20, Φ25×25×20	-	Branch with size transition
Orthodrome Elbow	Φ16	-	Special angled connection
Right Elbow	Φ16, Φ20	-	Right-direction change
Left Elbow	Φ16, Φ20	-	Left-direction change

Full Specification below.

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Quality Control Process

Material Selection

Bright nickel plating treatment, ensuring purity and mechanical properties.

CNC Machining

Threads are precision-cut with tolerance maintained at ±0.05 mm for leak-proof sealing.

Pressure Testing

Each fitting is hydrostatically tested at 40 bar (2.5× PN) for 1 hour to validate leak-proof performance.

Surface Inspection

Nickel plating thickness is verified at 15–20 μm via eddy current testing for corrosion resistance.

CNAS Certification

Full mechanical and long-term performance validation, including tensile strength (≥280 N/mm²) and elongation (≥10%).

Performance Advantages

1. Leak-Proof Design

Double O-ring seal system ensures zero leakage under 40 bar pressure, even in harsh environments.

2. High-Temperature Resistance

Maintains structural integrity at 110°C continuous operation, suitable for heating systems.

3. Corrosion Immunity

Nickel plating withstands pH 6.5–8.5 water quality for 50+ years, preventing rust and degradation.

4. Easy Installation

Electro-hydraulic clamping tool enables rapid, tool-only dependent connections, reducing labor time by 50%.

5. Space Efficiency

Compact design reduces installation space by 30% compared to traditional fittings, ideal for constrained areas.

6. Versatile Compatibility

Full series compatible with multiple pipe materials (PEX, PE-RT, PB, PEX-AL), offering flexibility in system design.

7. Long Service Life

≥50 years under standard operating conditions, backed by CNAS testing and quality assurance.

Applicable Scenarios

Radiator Heating Systems: Connections for copper-aluminum radiators and steel plate radiators in residential and commercial buildings, ensuring leak-proof performance under high temperatures.
Wall-Hung Boiler Pipelines: Compact fittings for efficient space utilization in residential heating units, compatible with PEX-AL pipes.
Solar Thermal Installations: High-temperature resistant connections for solar water heating systems, withstanding cyclic thermal stress.
HVAC Systems: Integration with central air conditioning and heat pump systems in commercial buildings, providing reliable fluid transport.
Industrial Piping: Brass Press fittings Chemical and thermal fluid transport in manufacturing plants, offering corrosion resistance and durability.
Potable Water Systems: Lead-free compliant connections for drinking water distribution networks, ensuring safety and hygiene.
Underfloor Heating: Oxygen barrier protection for radiant floor heating systems, using compatible PEX-AL pipes.