T E C H N I C A L A N D I N S T A L L A T I O N
19
From Table:
Maximum resistance allowed for a straight length of 22mm copper discharge pipe (D2) from a G1/2
temperature relief valve is 9.0m.
Subtract the resistance for 4 No. 22mm elbows at 0.8m each = 3.2m
Therefore the permitted length equates to: 5.8m
5.8m is less than the actual length of 7m therefore calculates the next largest size.
Maximum resistance allowed for a straight length of 28mm pipe (D2) from a G1/2 temperature relief
valves equates to 18m.
Subtract the resistance of 4 No. 28mm elbows at 1.0m each = 4.0m
Therefore the maximum permitted length equates to: 14m
As the actual length is 7m, a 28mm (D2) copper pipe will be satisfactory.
WARNINGS:
•
Under no circumstances should the factory fitted temperature/pressure relief valve be removed
other than by a competent person.
•
No control or safety valves should be tampered with or used for any other purpose.
•
The discharge pipe should not be blocked or used for any other purpose.
•
The tundish should not be located adjacent to any electrical components.
NOTES:
