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UPVC Lap Joint Flange

A lap joint flange for connecting PVC-U/C pipes to flanged equipment with a stub end.

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Product Overview

UPVC lap joint flange for connecting PVC-U pipes to flanged equipment with a stub end. Manufactured from virgin PVC-U compound per GB/T 10002.2 and ISO 1452, this UPVC lap joint flange slides over a stub end and bolts to mating equipment flanges, creating a demountable connection that can be opened for maintenance. Available in DN 50 - 400 mm with PN6 - PN16 ratings.

Quick Information

  • Type: Lap Joint Flange
  • Material: PVC-U / PVC-C
  • Size: DN 50 - 400 mm
  • Pressure Rating: PN6 - PN16
  • Connection: Flanged
  • Standard: GB/T 10002.2 / ISO 1452
  • Stock: In stock

Specification Table

Size DN Dimensions (mm) Nominal Pressure PN(kg/cm²)
D0 D1 D2 d0 d1 d2 d3 dw da T H1 H L Number of bolt hole
15 95 65 31 30.5 20.3 19.95 16 37.6 14 23.22 2.5 13 24.7 4 PN16
20 105 75 37.9 36.9 25.35 24.95 20.6 47 14 26.4 2.5 14 27.9 4 PN16
25 115 85 45.7 44.7 32.35 31.95 27 56 14 29.58 2.5 15 31.08 4 PN16
32 140 100 55 54 40.4 39.95 36 64 18 32.75 2.5 15 35.25 4 PN16
40(50) 150 110.00 62.60 61.60 50.35 49.90 45.00 74.00 18.00 31.20 2.50 18.00 33.70 4 PN16
50(63) 165.00 125.00 78.40 77.40 63.40 62.90 57.00 93.00 18.00 37.70 2.50 20.00 41.20 4 PN16
65(75) 185.00 145.00 91.40 90.40 75.40 74.90 69.00 110.00 18.00 43.70 2.50 23.00 47.20 4 PN16
80(90) 200.00 160.00 107.50 106.50 90.50 89.90 83.00 126.00 18.00 51.20 2.50 26.00 55.70 8 PN16
100(110) 220.00 180.00 127.90 126.90 110.60 109.90 103.00 147.00 18.00 61.20 2.50 28.00 65.70 8 PN16
De125 250.00 210.00 145.00 144.00 125.70 124.90 117.00 164.00 18.00 68.70 2.50 29.00 74.20 8 PN16
125(140) 250.00 210.00 162.30 161.30 140.75 139.90 131.50 181.00 18.00 76.20 2.50 30.00 81.70 8 PN16
150(160) 285.00 240.00 186.30 184.30 160.80 159.90 151.00 204.00 22.00 86.20 3.00 32.00 92.20 8 PN16
De180 285.00 240.00 229.00 227.00 180.90 199.90 190.00 257.40 22.00 106.20 3.00 36.00 112.20 8 PN10
De200 340.00 295.00 229.00 227.00 201.00 199.90 190.00 256.00 22.00 106.20 3.00 36.00 112.20 12 PN16
200(225) 340.00 295.00 256.10 254.10 226.10 224.90 216.00 271.00 22.00 118.70 3.00 38.00 127.70 8 PN16
De200 340.00 295.00 229.00 227.00 201.00 199.90 190.00 256.00 22.00 106.20 3.00 36.00 112.20 8 PN10
200(225) 340.00 295.00 256.10 254.10 226.10 224.90 216.00 271.00 22.00 118.70 3.00 38.00 127.70 8 PN10
De250 395.00 350.00 283.30 281.30 251.30 249.90 249.90 310.00 22.00 131.20 3.00 38.00 138.20 12 PN10
250(280) 398.00 351.50 308.00 305.50 281.50 279.90 272.00 325.00 22.00 147.00 3.00 40.00 159.00 12 PN10
300(315) 445.00 400.00 356.60 354.60 316.70 314.90 302.00 373.00 26.00 167.70 3.00 40.00 175.70 12 PN10
350(355) 486.00 460.00 388.00 386.00 356.80 355.00 326.00 417.00 26.00 184.30 3.00 40.00 197.00 16 PN10
400(400) 515.00 415.00 438.60 432.02 402.00 400.00 388.00 463.00 26.00 205.50 3.00 43.00 245.00 16 PN10
De450 620.00 565.00 488.50 486.00 451.94 450.05 447.00 518.00 26.00 233.00 38.00 45.00 245.00 20 PN10
500 670.00 620.00 541.00 536.50 502.80 500.00 486.00 573.00 26.00 256.00 38.00 50.00 268.00 20 PN10
600 813.00 725.00 670.00 668.50 633.00 630.00 629.00 697.00 32.00 321.00 37.00 50.00 316.00 20 PN10

Key Features

  • Demountable Flange Joint: The UPVC lap joint flange bolts over a stub end, allowing the connection to be opened for equipment maintenance.
  • Machined Sealing Face: The flange face of every UPVC lap joint flange is machined flat for uniform gasket compression and leak-free sealing.
  • Chemical Resistance: The UPVC lap joint flange withstands acids, alkalis and industrial chemicals without corrosion.
  • Lightweight Installation: Far lighter than steel flanges, the UPVC lap joint flange reduces handling and installation cost.
  • PN6 - PN16 Rated: The UPVC lap joint flange matches common PVC-U pipe pressure classes from DN 50 to 400 mm.
  • Long Service Life: Non-rusting, non-scaling UPVC lap joint flange material delivers decades of reliable flanged service.

Production

Raw Material

Each UPVC lap joint flange is injection molded from virgin PVC-U compound with precision tooling per GB/T 10002.2 and ISO 1452.

Molding Process

The UPVC lap joint flange is injection molded with precision flange-face dimensions, then CNC machined for flat gasket seat and bolt hole accuracy.

Quality Control

Every UPVC lap joint flange is inspected for face flatness, bolt circle diameter and bore alignment to guarantee leak-free flange assembly.

Applications

  • Valve and meter connections use the UPVC lap joint flange for bolted, serviceable joints in industrial lines.
  • Pump station pipework installs the UPVC lap joint flange at equipment nozzles for easy disassembly.
  • Chemical process plants rely on the UPVC lap joint flange for corrosion-free flanged transitions.
  • Water treatment systems choose the UPVC lap joint flange where lines must be opened for cleaning.
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