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Metalsin’s tee joint repair clamp for plastic piping is a specialized solution engineered for the rapid repair of leaks in both equal and reducing tees within HDPE, PVC, uPVC, and PPR systems. As tees are critical for branching or redirecting flow in water supply, irrigation, and industrial pipelines, any failure at these junctions can disrupt entire networks. These repair clamps are designed to fit both straight tees—where all outlets are the same diameter—and reducing tees, which connect main lines to smaller branch pipes, ensuring a precise fit regardless of the fitting configuration.

Tee joint repair clamps for plastic piping: for straight tee (left) and reducing tee (right), respectively.
The assembly of the tee-joint repair clamp consists of a robust two-piece ductile iron body, a high-performance rubber gasket system, high-tensile fasteners, and an integrated malleable iron vent plug. This “wrap-around” design enables the clamp to fully encapsulate the leaking tee fitting, allowing for immediate repair while the pipeline remains under pressure. By eliminating the need for system shutdowns or costly pipe replacements, Metalsin provides an efficient and reliable method to restore the integrity of your plastic piping branch connections.
| Component | Material Grade |
|---|---|
| Body | EN-GJS-450-10 QT450-10 ASTM A536 65-45-12 |
| Sealing Gaskets | ASTM D2000 & ISO 4633 EPDM/NBR |
| Bolts | Carbon Steel Gr. 8.8 ASTM A193 Gr.B8 |
| Nuts | Carbon Steel Gr. 8 ASTM A194 Gr.8 |
| Vent Plug | H.D.G Malleable Iron |

Technical drawing of straight-tee joint repair clamp.
| Nominal Pipe Size mm | D mm | L1 mm | L2 mm |
|---|---|---|---|
| 20 | 42 | 145 | 73 |
| 25 | 48 | 157 | 79 |
| 32 | 56 | 168 | 84 |
| 40 | 71 | 200 | 100 |
| 50 | 88 | 224 | 112 |
| 63 | 108 | 260 | 230 |
| 75 | 120 | 283 | 142 |
| 90 | 140 | 340 | 170 |
| 110 | 168 | 410 | 205 |
| 125 | 185 | 420 | 210 |
| 160 | 220 | 500 | 250 |
| 200 | 270 | 580 | 290 |
| 250 | 320 | 680 | 340 |
| 315 | 385 | 720 | 360 |
| 400 | 490 | 820 | 410 |

Technical drawing of reducing-tee joint repair clamp.
| Size mm | D1 mm | D2 mm | L1 mm | L2 mm |
|---|---|---|---|---|
| 50x25 | 80 | 48 | 200 | 100 |
| 50x32 | 80 | 56 | 200 | 100 |
| 50x40 | 80 | 71 | 210 | 105 |
| 63x25 | 98 | 48 | 210 | 105 |
| 63x32 | 98 | 56 | 220 | 110 |
| 63x40 | 108 | 71 | 240 | 120 |
| 63x50 | 108 | 80 | 240 | 120 |
| 75x50 | 120 | 80 | 333 | 165 |
| 75x63 | 120 | 108 | 343 | 166 |
| 90x50 | 140 | 80 | 359 | 177 |
| 90x63 | 140 | 108 | 340 | 170 |
| 90x75 | 140 | 120 | 359 | 177 |
| 110x50 | 168 | 80 | 390 | 190 |
| 110x63 | 168 | 108 | 390 | 190 |
| 110x75 | 168 | 120 | 390 | 192 |
| 110x90 | 168 | 140 | 390 | 195 |
| 160x63 | 220 | 120 | 500 | 250 |
| 160x90 | 220 | 140 | 500 | 250 |
| 160x110 | 220 | 168 | 500 | 250 |
| 200x63 | 228 | 120 | 580 | 290 |
| 200x90 | 228 | 136 | 580 | 290 |
| 200x110 | 228 | 136 | 580 | 290 |
| 200x160 | 228 | 188 | 580 | 290 |
| 250x110 | 320 | 168 | 680 | 340 |
| 250x160 | 320 | 220 | 680 | 340 |
| 250x200 | 320 | 260 | 680 | 340 |
| 315x110 | 400 | 170 | 760 | 385 |
| 315x160 | 400 | 230 | 790 | 405 |
| 315x200 | 400 | 270 | 820 | 415 |