Product Description
Our comprehensive product range includes:
- 45° Elbow and 90° Elbow for smooth directional changes
- Coupling and Reducer for straight connections and size transitions
- Tee and Reducing Tee for branch distribution
- Male Threaded Union and Female Threaded Union for threaded integrations
- Male Threaded Elbow and Female Threaded Elbow for angled threaded connections
- Double Union Ball Valve for flow control and maintenance isolation
- Over Bridge Bow for cross-over piping layouts
- Shoulder-to-Shoulder fitting for compact assemblies
Manufactured from premium lead-free brass (CW617N) and compatible with PB fittings pipes, these fittings undergo hot forging, precision machining, and annealing processes to ensure structural integrity and stress resistance. The bright nickel plating provides corrosion protection and maintains aesthetic appeal over decades of service.
Product Information
Material
Lead-free brass CW617N (nickel-plated)
Pressure Rating
PN16 (16 bar at 20°C)
Temperature Range
-20°C to 110°C
Thread Standards
G1/2", G3/4", G1" (ISO 228-1)
Compatibility
All POLYGON PB pipe series (S5, S4, S3.2)
Certifications
CNAS laboratory tested, NSF/ANSI 61 compliant
Product Specification
|
Fitting Type |
Dimensions (mm) |
Thread Size |
Max Operating Pressure |
|
45° Elbow |
DN16-DN32 |
- |
16 bar |
|
90° Elbow |
DN16-DN32 |
G1/2"-G1" |
16 bar |
|
Coupling |
DN16-DN32 |
- |
16 bar |
|
Reducing Tee |
- |
16 bar |
|
|
Male Threaded Union |
DN16-DN32 |
G1/2"-G3/4" |
16 bar |
|
Double Union Ball Valve |
DN16-DN32 |
G3/4"-G1" |
16 bar |
Full specification below
Quality Control Process
Material Verification
Brass ingots tested for Cu-Zn-Pb composition per EN 12165
Hot Forging
Die-forged under 800-ton pressure to enhance grain structure
CNC Machining
Thread tolerance maintained at ±0.05 mm
Annealing
Stress relief at 550°C for 2 hours to prevent cracking
Pressure Testing
PB fittings 100% hydrostatic tested at 2.5× PN (40 bar)
Surface Inspection
Nickel thickness verified at 15-20 μm via eddy current testing
Performance Advantages
Precision threads and nickel plating ensure perfect seals
PB fittings Withstands pH 6.5-8.5 water quality for 50+ years
Maintains integrity through 10,000+ thermal cycles
Tensile strength ≥280 N/mm², elongation ≥10%
Standardized threads require no special tools
Lead-free composition passes NSF/ANSI 61
Applicable Scenarios
- Radiator Heating Systems: Threaded elbows and unions for boiler connections
- Underfloor Heating Manifolds: Tees and reducers for zone distribution
- Solar Thermal Installations: Double union valves for maintenance isolation
- Potable Water Systems: Lead-free fittings for drinking water safety
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