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The HDPE 90×75 Reducing Coupler for Water Pipe is a precision-engineered transition fitting that connects 90mm and 75mm high-density polyethylene (HDPE) pipes in water distribution systems.
| Quantity: | |
|---|---|
Specification(mm) | H1 | H2 | L | Specification(mm) | H1 | H2 | L |
S75-50 S75-63 S90-50 S90-63 S90-75 S110-50 S110-63 S110-75 S110-90 S125-50 S125-63 S125-75 S125-90 S125-110 S140-63 S140-75 S140-90 S140-110 S140-125 S160-63 S160-75 S160-90 S160-110 S160-125 S160-140 S180-63 S180-75 S180-90 S180-110 S180-125 S180-140 S180-160 S200-63 S200-75 S200-90 S200-110 S200-125 S200-140 S200-160 S200-180 S225-110 S225-125 S225-160 S225-180 S225-200 S250-110 S250-125 S250-160 S250-180 S250-200 S250-225 | 67 67 75 75 75 77 77 77 77 78 78 78 78 78 80 80 80 80 80 80 80 80 80 80 80 80 80 80 80 80 80 80 80 80 80 80 80 80 80 80 80 80 80 80 80 90 90 90 90 90 90 | 60.5 60.5 63.5 63.5 71 71 73.5 74 76.5 72 73.5 73.5 76.5 78 71 74 76 77 77 71 72 74 77 82 84 75 75 79 86 86 86 86 78 78 80 82 82 80.5 80.5 80.5 80 80 80 80 80 81 81 82 83 85 85 | 140 140 155 155 155 166 166 166 166 168.5 168.5 168.5 168.5 168.5 170 170 170 170 170 179 179 179 179 179 179 180 180 180 180 180 180 180 185 185 185 185 185 185 185 185 180 180 180 180 180 205 205 205 205 205 205 | S280-110 S280-160 S280-200 S280-225 S280-250 S315-110 S315-160 S315-180 S315-200 S315-225 S315-250 S315-280 S355-110 S355-160 S355-200 S355-250 S355-280 S355-315 S400-110 S400-160 S400-200 S400-225 S400-250 S400-280 S400-315 S400-355 S450-200 S450-250 S450-280 S450-315 S450-355 S450-400 S500-200 S500-250 S500-315 S500-355 S500-400 S500-450 S560-315 S560-355 S560-400 S560-450 S560-500 S630-315 S630-400 S630-500 | 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 100 100 100 100 100 100 95 95 | 78 81 85 85 87 80 80 80 87 87 85 85 83 86 90 93 92 95 85 85 85 83 80 85 85 85 90 92 95 100 105 108 110 120 122 133 135 140 120 130 130 130 130 125 140 142 | 192 192 192 192 192 204 204 204 204 204 204 204 205 205 205 205 205 205 215 215 215 215 215 215 215 215 235 235 235 235 235 235 255 255 255 255 255 255 245 250 260 265 265 275 275 275 |
Crafted from PE100 grade HDPE—certified for potable water applications under EN 12201-1:2024—this coupler ensures leak-free connections between different diameter pipes, maintaining consistent pressure in residential, commercial, and municipal water networks. Unlike rigid PVC reducers that crack under thermal expansion, its flexible construction accommodates minor pipe movement while preserving hydraulic efficiency. The coupler’s gradual diameter reduction minimizes pressure loss, making it ideal for retrofitting older systems or extending existing pipelines with smaller service lines.
The coupler features a tapered internal transition with a 3° angle, reducing turbulence and pressure drop by up to 40% compared to abrupt-step reducers. This design maintains flow rates while connecting 90mm main lines to 75mm branch lines, ensuring adequate water pressure at delivery points. The smooth inner surface (Ra <0.008mm) prevents scaling and biofilm formation, preserving water quality in potable systems.
Manufactured to withstand 16 bar (232 psi) working pressure at 20°C, this reducing coupler meets the demands of medium-pressure water distribution networks. The PE100 material retains 80% of its strength at 60°C, making it suitable for tempered water applications such as district heating systems. Its one-piece molded construction eliminates potential leak points, with dimensional tolerances of ±0.3mm ensuring compatibility with standard HDPE pipes.
Designed for hot fusion welding, the coupler creates permanent, homogenous joints that are stronger than the pipe itself. It can also be installed with electrofusion sockets for applications requiring precise temperature control during joint formation. The lightweight design (1.2kg for 90×75mm size) reduces handling effort, while compatibility with both PE80 and PE100 pipes enhances versatility in mixed-system installations.
This reducing coupler solves diameter transition challenges in various water systems:
Municipal Water Networks: Connects main distribution lines (90mm) to neighborhood service lines (75mm) with minimal pressure loss.
Residential Developments: Transitions from property main lines to individual household connections, ensuring balanced water pressure.
Commercial Buildings: Adapts pipe sizes in complex plumbing systems for offices, hotels, and hospitals.
Irrigation Systems: Reduces mainline diameter to lateral lines in agricultural and landscape irrigation networks .
The 3° tapered design reduces turbulence and pressure loss, preventing cavitation that can damage pipes and fittings in high-flow systems. This ensures more efficient water distribution compared to abrupt-step reducers.
Yes. The PE100 grade HDPE meets EN 12201-1 requirements for potable water contact, with no leaching of harmful substances or impact on water taste/odor .
The coupler operates reliably at continuous temperatures up to 60°C, with short-term tolerance for 70°C peaks—suitable for most domestic hot water and tempered water applications.
Yes. The coupler is compatible with both PE80 and PE100 HDPE pipes, making it ideal for retrofitting projects where existing infrastructure uses different polyethylene grades.
Specification(mm) | H1 | H2 | L | Specification(mm) | H1 | H2 | L |
S75-50 S75-63 S90-50 S90-63 S90-75 S110-50 S110-63 S110-75 S110-90 S125-50 S125-63 S125-75 S125-90 S125-110 S140-63 S140-75 S140-90 S140-110 S140-125 S160-63 S160-75 S160-90 S160-110 S160-125 S160-140 S180-63 S180-75 S180-90 S180-110 S180-125 S180-140 S180-160 S200-63 S200-75 S200-90 S200-110 S200-125 S200-140 S200-160 S200-180 S225-110 S225-125 S225-160 S225-180 S225-200 S250-110 S250-125 S250-160 S250-180 S250-200 S250-225 | 67 67 75 75 75 77 77 77 77 78 78 78 78 78 80 80 80 80 80 80 80 80 80 80 80 80 80 80 80 80 80 80 80 80 80 80 80 80 80 80 80 80 80 80 80 90 90 90 90 90 90 | 60.5 60.5 63.5 63.5 71 71 73.5 74 76.5 72 73.5 73.5 76.5 78 71 74 76 77 77 71 72 74 77 82 84 75 75 79 86 86 86 86 78 78 80 82 82 80.5 80.5 80.5 80 80 80 80 80 81 81 82 83 85 85 | 140 140 155 155 155 166 166 166 166 168.5 168.5 168.5 168.5 168.5 170 170 170 170 170 179 179 179 179 179 179 180 180 180 180 180 180 180 185 185 185 185 185 185 185 185 180 180 180 180 180 205 205 205 205 205 205 | S280-110 S280-160 S280-200 S280-225 S280-250 S315-110 S315-160 S315-180 S315-200 S315-225 S315-250 S315-280 S355-110 S355-160 S355-200 S355-250 S355-280 S355-315 S400-110 S400-160 S400-200 S400-225 S400-250 S400-280 S400-315 S400-355 S450-200 S450-250 S450-280 S450-315 S450-355 S450-400 S500-200 S500-250 S500-315 S500-355 S500-400 S500-450 S560-315 S560-355 S560-400 S560-450 S560-500 S630-315 S630-400 S630-500 | 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 100 100 100 100 100 100 95 95 | 78 81 85 85 87 80 80 80 87 87 85 85 83 86 90 93 92 95 85 85 85 83 80 85 85 85 90 92 95 100 105 108 110 120 122 133 135 140 120 130 130 130 130 125 140 142 | 192 192 192 192 192 204 204 204 204 204 204 204 205 205 205 205 205 205 215 215 215 215 215 215 215 215 235 235 235 235 235 235 255 255 255 255 255 255 245 250 260 265 265 275 275 275 |
Crafted from PE100 grade HDPE—certified for potable water applications under EN 12201-1:2024—this coupler ensures leak-free connections between different diameter pipes, maintaining consistent pressure in residential, commercial, and municipal water networks. Unlike rigid PVC reducers that crack under thermal expansion, its flexible construction accommodates minor pipe movement while preserving hydraulic efficiency. The coupler’s gradual diameter reduction minimizes pressure loss, making it ideal for retrofitting older systems or extending existing pipelines with smaller service lines.
The coupler features a tapered internal transition with a 3° angle, reducing turbulence and pressure drop by up to 40% compared to abrupt-step reducers. This design maintains flow rates while connecting 90mm main lines to 75mm branch lines, ensuring adequate water pressure at delivery points. The smooth inner surface (Ra <0.008mm) prevents scaling and biofilm formation, preserving water quality in potable systems.
Manufactured to withstand 16 bar (232 psi) working pressure at 20°C, this reducing coupler meets the demands of medium-pressure water distribution networks. The PE100 material retains 80% of its strength at 60°C, making it suitable for tempered water applications such as district heating systems. Its one-piece molded construction eliminates potential leak points, with dimensional tolerances of ±0.3mm ensuring compatibility with standard HDPE pipes.
Designed for hot fusion welding, the coupler creates permanent, homogenous joints that are stronger than the pipe itself. It can also be installed with electrofusion sockets for applications requiring precise temperature control during joint formation. The lightweight design (1.2kg for 90×75mm size) reduces handling effort, while compatibility with both PE80 and PE100 pipes enhances versatility in mixed-system installations.
This reducing coupler solves diameter transition challenges in various water systems:
Municipal Water Networks: Connects main distribution lines (90mm) to neighborhood service lines (75mm) with minimal pressure loss.
Residential Developments: Transitions from property main lines to individual household connections, ensuring balanced water pressure.
Commercial Buildings: Adapts pipe sizes in complex plumbing systems for offices, hotels, and hospitals.
Irrigation Systems: Reduces mainline diameter to lateral lines in agricultural and landscape irrigation networks .
The 3° tapered design reduces turbulence and pressure loss, preventing cavitation that can damage pipes and fittings in high-flow systems. This ensures more efficient water distribution compared to abrupt-step reducers.
Yes. The PE100 grade HDPE meets EN 12201-1 requirements for potable water contact, with no leaching of harmful substances or impact on water taste/odor .
The coupler operates reliably at continuous temperatures up to 60°C, with short-term tolerance for 70°C peaks—suitable for most domestic hot water and tempered water applications.
Yes. The coupler is compatible with both PE80 and PE100 HDPE pipes, making it ideal for retrofitting projects where existing infrastructure uses different polyethylene grades.
