Product Handbook 2026 - Volume 1

General information Useful calculation data

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Local regulations may restrict the use of this product to below the conditions quoted. In the interests of development and improvement of the product, we reserve the right to change the specification without notice. © Copyright 2019

TI-GCM-11 CM Issue 2

Condensate Pipe Sizing

1. Drain lines to traps.

Types 2 and 3 will usually contain flash steam whilst types 1 and 4 will not. The condensate pipe sizing chart can be used to size all of the above types, and is suitable for lines up to 100 m long.

2. Discharge lines from traps. 3. Common discharge lines. 4. Pumped lines.

Condensate pipe sizing Condensate pipes operate in 4 basic ways:

Condensate pipe size mm

500

400 350 300

250

200

100 000

100 150

50 000

15 20 25 32 40 50 65 80

20 000

10 000

5 000

2 000

1 000

500

7.5 21

Example 1

10

200

100

6

50

20

10

250

50

5 10 20 30 40

20 10 15 5

200 180 160 140 120

11.5.18

2 1

1 2

0 0.5

0.5 0

100

Example 1 - Drain lines to traps: Scenario: Drain 500 kg/h from process to trap. How to size: Enter the top chart at 500 kg/h and draw a line horizontally across to the pipe size. Result: If the selection sits between two sizes, choose the smaller size (15 mm).

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