UPVC Blind Flange for Industry

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The UPVC Blind Flange for Industry is a solid blind flange with no center bore, designed for permanent or temporary sealing of flanged pipe ends in chemical and water treatment systems.
  • Diameter Range: DN15 – 400mm
  • Pressure Rating: PN10, PN16
  • Applicable Standards: ISO 1452-3, ASTM D2467
  • Stock Availability: In stock
  • Sample Policy: Free sample available
  • Lead Time: 5–30 days

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The UPVC Blind Flange for Industry is a solid closure flange used to seal flanged pipe ends in chemical and industrial water treatment piping systems. Its one-piece UPVC construction provides a leak-proof and corrosion-resistant end cap.

UPVC Blind Flange for Industry
Size DN Dimensions (mm) Number of bolt hole n Nominal Pressure
PN(kg/cm²)
D0 d1 da H
15(20) 95.00 65.00 14.00 12.50 4 PN16
20(25) 105.00 75.00 14.00 13.40 4 PN16
25(32) 115.00 85.00 14.00 14.40 4 PN16
32(40) 140.00 100.00 18.00 14.40 4 PN16
40(50) 150.00 110.00 18.00 16.40 4 PN16
50(63) 165.00 125.00 18.00 16.20 4 PN16
65(75) 185.00 145.00 18.00 17.50 4 PN16
80(90) 200.00 160.00 18.00 18.00 8 PN16
100(110) 220.00 180.00 18.00 22.00 8 PN16
125(140) 250.00 210.00 18.00 27.00 8 PN16
150(160) 285.00 240.00 22.00 28.00 8 PN16
200(225) 340.00 295.00 22.00 29.50 8 PN10
250(280) 405.00 350.00 22.00 33.00 12 PN10
300(315) 445.00 400.00 22.00 31.50 12 PN10
350(355) 510.00 450.00 24.00 40.00 16 PN10
400(400) 570.00 500.00 27.00 33.00 16 PN10
500(500) 670.00 620.00 27.00 45.00 20 PN10
600(630) 813.00 725.00 30.00 53.00 20 PN10

Key Features of UPVC Blind Flange for Industry

  • Solid construction: has no center bore for complete sealing of flanged interfaces.
  • One-piece injection: is integrally molded, providing high strength with no leak paths.
  • Flanged connection: is bolted to a mating flange with a gasket seal.
  • Chemical resistant: all-UPVC construction makes suitable for corrosive industrial environments.

Manufacturing Process of UPVC Blind Flange for Industry

Each is one-piece injection molded from UPVC with a flat flange face and standard bolt holes. No center bore ensures complete sealing.

Critical Process Parameters of UPVC Blind Flange for Industry

Every is checked against these parameters:

  • Flange face flatness.
  • Bolt circle and hole diameter conform to standards.
  • Blind flange thickness meets pressure rating requirements.

Raw Material Characteristics of UPVC Blind Flange for Industry

  • Material: UPVC
  • UPVC suitable up to 60°C; PVC-C version suitable up to 93°C
  • High mechanical strength and pressure resistance
  • Chemical resistant

Typical Applications of UPVC Blind Flange for Industry

  • The fitting provides permanent sealing of flanged pipe ends in chemical piping.
  • is used for temporary isolation of flanged interfaces.
  • The fitting protects reserved interfaces from contamination.
  • serves as an end cap during pipeline pressure testing.

Application Scenarios of UPVC Blind Flange for Industry

  • Sealing and isolation of flanged interfaces in industrial piping — is the standard closure piece.
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