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 > Propane regulator making noise

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12th Man Fan

Flower Mound , Texas

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Posted: 09/17/20 06:17pm Link  |  Quote  |  Print  |  Notify Moderator

Recently I have noticed when I am using the furnace in the RV I am hearing a fairly loud noise comin from the propane regulator. For lack of a better description it sound like a rattle.

My Rv is a 2015. Is it time to replace the regulator already or is this a normal thing.

The other night I could hear it in the bedroom.


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Old-Biscuit

Verde Valley

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Posted: 09/17/20 06:54pm Link  |  Quote  |  Print  |  Notify Moderator

2015...6 yrs old
Time for a New one
Cavagna 924n or Marshall Excelsior MEGR-253


Is it time for your medication or mine?


2007 DODGE 3500 QC SRW 5.9L CTD In-Bed 'quiet gen'
2007 HitchHiker II 32.5 UKTG 2000W Xantex Inverter
On the Road Debt Free April '07
Off the road still Debt Free Jan. '14

time2roll

Southern California

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Posted: 09/17/20 07:04pm Link  |  Quote  |  Print  |  Notify Moderator

I would take the Cavagna over that Marshall any day. Much easier to read and no guesswork.


2001 F150 SuperCrew
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reluyog

Colorado

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Posted: 09/19/20 08:56pm Link  |  Quote  |  Print  |  Notify Moderator

I replaced mine with a commercial grade Rego unit and full flow fittings. Extremely reliable.
[image]
Good luck.


Damian
1983 KW W900, 3406B Cat, RTO14615, 355's
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wopachop

Who run bartertown

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Posted: 09/19/20 09:19pm Link  |  Quote  |  Print  |  Notify Moderator

Wow thats nice. Is that the 7525? Im looking them up online. On my laptop im clicking your picture but cant seem to zoom.

Never seen anyone run the reverse thread like you. Is the idea similar metal will be better than the plastic Acme? Or is the inside diameter of that hose larger? Or both?

edit: oh wait its the inside diameter of the connectors that are larger? Recently got some high flow air compressor fittings. Something new and fun to play with.

time2roll

Southern California

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Posted: 09/19/20 09:52pm Link  |  Quote  |  Print  |  Notify Moderator

I believe the ACME nut is designed to melt in a fire to disengage the pigtail and close the valve to stop further propane release.

reluyog

Colorado

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Posted: 09/20/20 08:19am Link  |  Quote  |  Print  |  Notify Moderator

Hopefully this is a pic that will zoom. The hose connections are just old fashioned style full flow connectors. I rely on the OPD valve overflow protection instead of having another overflow protection valve in the new style hoses.
[image]
[image]Click For Full-Size Image.

NRALIFR

Truck Camping Out West

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Posted: 09/20/20 08:31am Link  |  Quote  |  Print  |  Notify Moderator

The OPD in the cylinder and the excess flow check valve in the pigtails that have the Acme nut are not the same thing. They protect you from two different hazards. The Acme nut also includes a thermal bushing that melts in the presence of fire, and will disconnect the pigtails from the valves.

I’m not familiar with that brand of regulator. Is it two stage?

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reluyog

Colorado

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Posted: 09/20/20 09:36am Link  |  Quote  |  Print  |  Notify Moderator

The way I figure it, if there's a fire, the rubber hoses will become compromised and the opd overflow valve will be applied. I believe it's just a single stage regulator. The key for me is not to restrict the flow of propane, as much as possible anyway.

NRALIFR

Truck Camping Out West

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Posted: 09/20/20 10:39am Link  |  Quote  |  Print  |  Notify Moderator

reluyog wrote:

The way I figure it, if there's a fire, the rubber hoses will become compromised and the opd overflow valve will be applied.


No, it won’t. That’s what the excess flow check valve does that is part of the new style pigtails with the green Acme nut. It prevents unrestricted flow of LP in case the hose is broken. The OPD only prevents overfilling the cylinder. The thermal bushing in the Acme nut, when it melts in a fire, allows the pigtail fitting to back out of the valve on the cylinder (it’s spring loaded) closing off the flow.


reluyog wrote:

I believe it's just a single stage regulator. The key for me is not to restrict the flow of propane, as much as possible anyway.


The reason I asked is because it was my understanding that a dual stage regulator was required on RV’s. Yours may very well be. Like I said, I’m not familiar with that brand. But, what’s OK to do on stationary LP systems (like on a mobile home) isn’t always OK for an RV system. If the green Acme nut (200,000 btu) was not allowing enough LP to flow for you, you could switch to pigtails with a red Acme nut, which can flow up to 400,000 btu.

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* This post was last edited 09/20/20 12:58pm by NRALIFR *   View edit history

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