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Pipeline Pump Flange Dimensions by Size, DN25 to DN400 — Blog
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Pipeline Pump Flange Dimensions by Size, DN25 to DN400

Model: ISG, IRG, IHG, ISW pipeline pumps

Flange outside diameter, bolt circle and bolt holes for ISG, IRG, IHG and ISW pipeline pumps from DN25 to DN400, for ordering counter flanges and pipe.

Specifications
Inlet / Outlet DiameterDN25 to DN400
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Product Overview

The questions that come right after an order are often about connections: what flange is on the pump, and what should the installer buy to meet it. These are the flange sizes on our pipeline pumps.

Flange sizeOutside diameter D (mm)Bolt circle D1 (mm)Bolt holes
DN25115854 × Φ16
DN321401004 × Φ16
DN401501104 × Φ18
DN501651254 × Φ18
DN651851454 × Φ18
DN802001608 × Φ18
DN1002201808 × Φ18
DN1252502108 × Φ18
DN1502852408 × Φ22
DN20034029512 × Φ22
DN25040535512 × Φ26
DN30046041012 × Φ26
DN35052047016 × Φ26
DN40058052516 × Φ30

These follow the common PN16 drilling, so standard PN16 counter flanges fit.

Check before you buy

  • The flange size usually equals the first number of the model: an ISG65-160 has DN65 flanges
  • A few high-flow (I) builds use the next flange size up; for example the 125-315(I) family carries DN150 flanges. Check the model in the selection table or ask us
  • If your pipework uses another standard, such as ANSI, order adaptor flanges or tell us before production

Find your model in the selection table.

Typical Applications

  • ordering counter flanges
  • hoses and pipework for pipeline pumps

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