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Related Literature
EN-DS-02E - U.I.P. Standard System - below grade
EN-DS-04E - U.I.P. System PE casing above grade

EN-DS-03E - U.I.P. system - Spiwrap above grade

EN-DS-08E - U.I.P. System - PVC casing - above & below grade - chilled water

Urecon | Celebrating 40 Years | 1969-2009

Freeze Protection

Urecon pre-insulated pipe and heat trace systems are commonly used in industrial applications where freeze protection or temperature maintenance is required.

Pipe can be installed on pipe racks, sleepers or even shallow buried. With our system, the pipe is insulated in the factory and arrives on site ready to install.

Urecon's unique method of insulating 'over the bell' of socket joined PVC and CPVC (or push-on DI) pipe means no more bare pipe joints or expensive joint kits.  See Bell x Spigot or Push On Joints.

Time to Freeze and Heat Loss for U.I.P.® Pre-Insulated Pipe

Nominal
Pipe Diameter
Pipe Ambient -18C (0F) Pipe Ambient -34C (-30F)
Time to Freeze HRS. Heat Loss Time to Freeze HRS. Heat Loss
mm in No Insulation 50 mm (2 in)
U.I.P.®
(watts/m) No Insulation 50 mm (2 in)
U.I.P.®
(watts/m)
19 0.75 1 18 1.7 1 9 3.1
25 1 1 40 2.0 1 21 3.6
30 1.25 1 40 2.2 1 21 4.1
40 1.5 1 50 2.4 1 26 4.4
50 2 1 71 2.8 1 38 5.1
75 3 1 121 3.6 1 64 6.5
100 4 2 175 4.3 1 93 7.8
150 6 3 295 5.7 2 156 10.4
200 8 6 413 7.0 3 219 12.8
250 10 9 542 8.3 5 286 15.2
300 12 13 665 9.5 7 352 17.5
350 14 15 744 10.3 8 392 18.9
400 16 20 862 11.5 10 456 21.0
450 18 28 996 12.5 14 514 23.5
500 20 36 1180 13.6 18 609 25.6

Note:

  1. No safety factor included; results are nominal; assumes initial water temperature of 1.11C (34F).
  2. To convert watts to BTU, multiply by 3.414.
  3. To convert meters to feet, multiply by 3.28.
  4. Values are approximate and are based on schedule 40, steel pipe.