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sprinkler pipe question

I would defer to the manufacturer's spec's. I can't think of anything off the top off my head otherwise.
 
You can paint it and protect it against corrision, so do not see a problem, as long as it does not corrode the pipe or add that much more wieght to it!!!

8.16.4.2* Protection of Piping Against Corrosion.

8.16.4.2.1* Where corrosive conditions are known to exist due to moisture or fumes from corrosive chemicals or both, special types of fittings, pipes, and hangers that resist corrosion shall be used, or a protective coating shall be applied to all unprotected exposed surfaces of the sprinkler system.

A.8.16.4.2.1

A.8.16.4.2.1 Types of locations where corrosive conditions can exist include bleacheries, dye houses, metal plating processes, animal pens, and certain chemical plants.

If corrosive conditions are not of great intensity and humidity is not abnormally high, good results can be obtained by a protective coating of red lead and varnish or by a good grade of commercial acid-resisting paint. The paint manufacturer's instructions should be followed in the preparation of the surface and in the method of application.

Where moisture conditions are severe but corrosive conditions are not of great intensity, copper tube or galvanized steel pipe, fittings, and hangers might be suitable. The exposed threads of steel pipe should be painted.

In instances where the piping is not readily accessible and where the exposure to corrosive fumes is severe, either a protective coating of high quality can be employed or some form of corrosion-resistant material used.

8.16.4.2.2* Where water supplies or environmental conditions are known to have unusual corrosive properties, piping shall have a corrosion resistance ratio (CRR) of 1 or more, and the system shall be treated in accordance with 23.1.5.

8.16.4.2.3 Where corrosive conditions exist or piping is exposed to the weather, corrosion-resistant types of pipe, fittings, and hangers or protective corrosion-resistant coatings shall be used.

8.16.4.2.4 Where steel pipe is used underground, the pipe shall be protected against corrosion.
 
itsasurewin said:
can you spray fire proofing material into sprinkler piping? Yes or No? code reference if any?
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why would anyone want to spray fire proofing into a pipe system designed to carry water? I would say that you can not spray FP into the piping it would be an obstruction.
 
TheCommish said:
why would anyone want to spray fire proofing into a pipe system designed to carry water? I would say that you can not spray FP into the piping it would be an obstruction.
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Maybe pipe was put up, prior to Fire proofing what should of been done!!!!!
 
NFPA 13 (2007 edition) 6.3.8.2 "All pipe, including specially listed pipe allowed by 6.3.6, shall be marked along its length by the manufacturer in such a way as to properly identify the type of pipe. the markings shall be visible on every piece of pipe over 2ft (610mm) long."

...kinda hard to comply with that requirement with fire proofing sprayed onto it...
 
But goes on somewhere to say you can

Plus steel pipe is not listed like cvpc is

See above sections talking about painting the pipe
 
Gut instinct is no..... Reasons are:

Not listed for that application (PVC piping or Spray on FIre Proofing)

PVC piping will contract and expand as temperature levels do - the Spray on Fire Proofing may react differently to temperature changes

Sprinkler hangers may not support the added weight

Seismic restraints were not designed for the additional mass (load) added to the piping

yada, yada, yada,
 
would not allow it on cvpc, but not much heart burn with steel, as long as it will not cause corrision
 
cda said:
But goes on somewhere to say you canPlus steel pipe is not listed like cvpc is

See above sections talking about painting the pipe
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I can't find anything about sainting the pipe. It says the sprinkler heads can only be painted by the manufacturer and pipe must have a protective coating applied where in a corrosive environment and special types of pipe are not used. Since it's not expressly forbidden does that mean it's permitted or is it not permitted because it's not expressly stated? Either way I'm done playing devil's advocate. As I said before my concern would be the added load to the hangers as long as we're talking about steel pipe.
 
the op needs to supply more info. what fire proofing material is he spraying into the piping? pretty vague to make any response.
 
It is already fireproofed inside::::::

WATER!!!!!!!!!!!!!!

once again, I think someone has put pipe up, prior to the steel I- beams or whatever was fire proofed
 
Our only concern is the heads being blown onto, the weight on pipes and hangers. Overspray or painting is no big deal as long as the heads are free from debris or materials. Now if some contractor sprays the entire piping network due to being lazy, that's a poor contractor and I would use the weight card and heads being covered and have the installing contaractor contract a licensed sprinkler firm or the facility's choice to have it all cleaned off.
 
Heck once it's all fire proof they wont even need the sprinklers..... The pressure in those lines will blow that stuff right off of there when they are turned on.... heh, it's amazing what is done out there isn't it?

ZIG
 
TheCommish said:
why would anyone want to spray fire proofing into a pipe system designed to carry water? I would say that you can not spray FP into the piping it would be an obstruction.
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The pipe was installed before the spray proofing was applied and notice that they covered the sprinkler pipes.
 
tmurray said:
NFPA 13 (2007 edition) 6.3.8.2 "All pipe, including specially listed pipe allowed by 6.3.6, shall be marked along its length by the manufacturer in such a way as to properly identify the type of pipe. the markings shall be visible on every piece of pipe over 2ft (610mm) long."...kinda hard to comply with that requirement with fire proofing sprayed onto it...
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Yeah I saw this requirement and qouted it. Also, noted the added weight and to check every single sprinkler head for overspray residue.
 
itsasurewin said:
Yeah I saw this requirement and qouted it. Also, noted the added weight and to check every single sprinkler head for overspray residue.
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Above ground steel pipe is not listed
 
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