Insulating steam pipe valves, joints, couplings

Salvatore DiChristina

Subject: Steam boiler pipe insulation.


I have 2 inch pipes and 1 1/2" pipes leading to/from my boiler with a number of valves, joints and unions (couplings) that are larger than the 2" and 1 1/2" pipes attached to the boiler. Where can I get and what size fiberglass insulation do I need to cover the valves, joints and unions that are of several larger sizes than the pipes? The insulation I have for the 2" pipe is 1/2' thick by 3'foot lengths FIBR*54. Must I insulate the pipes that are attached at the boiler level?

pfitter_23

Pipe insulation

Try Here:
https://www.statesupply.com/displayCategory.do?Id=2062

Salvatore DiChristina

Pfitter

Thank you for your kind response. 1 more question. What about the large couplings that join 2 straight pipes together on a 2" and 1 1/2" pipes. Is there a product built for those and if it is a coupling on a 2" pipe must i know the size of the coupling or just order insulation for a coupling on a 2" pipe? As you can tell I am truly a novice at this. Thank you again

Salvatore DiChristina

Salvatore DiChristina

pfitter_24

Insulation

Sal,

As a general rule a "Coupling" is not much larger than the pipe. The insulator just streaches the piece over it. Pros staple the seams in addition to the self stick adhisive. If what you have is a flange then, yes they make a piece for that. Measure the od.

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