Discuss NFPA CWBSP Exam Topic 4 Question 29

Antifreeze systems that contain a backflow preventer between the antifreeze piping and the wet pipe system must be

equipped with

Aa relief valve.

Ba sight glass.

Can accelerator.

Dan expansion chamber.

Suggested Answer: D

Antifreeze systems equipped with a backflow preventer must include an expansion chamber to accommodate the expansion of the antifreeze solution due to temperature changes. This prevents excessive pressure buildup that could damage the system or cause unintended discharge.

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24 comments · newest first

Fairy 2 days ago

Still, A is the best choice for safety.

Luisa 7 days ago

True, but we need to see the antifreeze level too.

Horace 12 days ago

Yes, but it doesn't prevent backflow like a relief valve.

Jerry 18 days ago

But can a sight glass help monitor the system?

Fairy 23 days ago

A relief valve is crucial for pressure control.

Luisa 28 days ago

I feel like B) a sight glass makes sense too.

Horace 1 month ago

I think it should be A) a relief valve.

Ula 1 month ago

All options have their merits, but A seems most critical.

Tori 1 month ago

Good point, but we shouldn’t overlook the expansion chamber's role.

Sherell 2 months ago

Exactly, without it, pressure could build up dangerously.

Javier 2 months ago

True, but the relief valve is more essential in this case.

Ula 2 months ago

But what about B) a sight glass? It’s useful for monitoring.

Tori 2 months ago

I’m leaning towards D) an expansion chamber. It helps with thermal expansion.

Sherell 2 months ago

I agree, a relief valve is crucial for pressure control.

Javier 2 months ago

I think it should be A) a relief valve.

Selma 3 months ago

Yup, A is definitely the right choice!

Eura 3 months ago

Seems odd, why would you need a relief valve here?

Vallie 3 months ago

Wait, are you sure about that? I thought it was B) a sight glass.

Sylvie 3 months ago

Totally agree, relief valves are essential!

Gussie 3 months ago

Gotta go with A) a relief valve.

Roxane 4 months ago

I’m really uncertain here. I thought it was an accelerator, but now I’m second-guessing myself.

Gail 5 months ago

I feel like we had a practice question about this, and it was about expansion chambers. Could that be the right choice?

Cherelle 5 months ago

I remember discussing backflow preventers, but I can't recall if they specifically need a sight glass or something else.

Sommer 5 months ago

I think the answer might be A) a relief valve, but I'm not entirely sure. We covered something similar in class.

NFPA CWBSP Exam - Topic 4 Question 29 Discussion