|
|
12-28-2008, 03:07 PM
|
#29
|
Senior Member
Join Date: Aug 2001
Location: North America somewhere
Posts: 30,982
|
Well__, If propane101.comis correct, I've been wrong about OPD valves until tonight. That webpage says OPD valves only work when filling a cylinder, valve open-no flow and when not attached to a hose.
This means RV Wizard-Mike was probably correct when he posted his first comment. The propane cylinders would have flowed propane to fuel the fire as long as the hose connection was intact.
__________________
2000 Winnebago Ultimate Freedom USQ40JD , ISC 8.3 Cummins 350, Spartan MM Chassis. USA IN 1SG 11B5MX,Infantry retired;Good Sam Life member,FMCA. " My fellow Americans, ask not what your country can do for you, ask what you can do for your country. John F. Kennedy
|
|
|
|
Join the #1 RV Forum Today - It's Totally Free!
iRV2.com RV Community - Are you about to start a new improvement on your RV or need some help with some maintenance? Do you need advice on what products to buy? Or maybe you can give others some advice? No matter where you fit in you'll find that iRV2 is a great community to join. Best of all it's totally FREE!
You are currently viewing our boards as a guest so you have limited access to our community. Please take the time to register and you will gain a lot of great new features including; the ability to participate in discussions, network with other RV owners, see fewer ads, upload photographs, create an RV blog, send private messages and so much, much more!
|
12-29-2008, 04:51 AM
|
#30
|
Senior Member
Winnebago Owners Club
Join Date: Aug 2004
Location: Zephyrhills, FL
Posts: 935
|
<BLOCKQUOTE class="ip-ubbcode-quote"><div class="ip-ubbcode-quote-title">quote:</div><div class="ip-ubbcode-quote-content">Originally posted by Ray,IN:
The propane cylinders would have flowed propane to fuel the fire as long as the hose connection was intact. </div></BLOCKQUOTE>And would have continued to do so if the rubber supply hose burns off - allowing the tank to vent. Which is a lot better than flames impinging upon a full tank, heating up the contents and causing a BLEVE - Boiling Liquid Expanding Vapor Explosion.
Let's face it. Once an RV gets burning, there's not much that can be done to stop it unless the fire dept. has a truck right there with a bunch of water. I've seen the results, both as a firefighter and spectator.
__________________
'14 Winnebago Vista 35F, '14 GMC Terrain BlueOx Towing Pkg, SMI Stay-n-Play 49 States & 7 Provinces visited in MH | WIT W112365
|
|
|
12-29-2008, 05:41 AM
|
#31
|
Senior Member
Texas Boomers Club
Join Date: Jul 2000
Location: Cypress, Texas USA
Posts: 8,854
|
In regard to excess flow devices. The following is taken from an RV manufacturer's owner's manual. Note especially the last paragraph:
<BLOCKQUOTE class="ip-ubbcode-quote"><div class="ip-ubbcode-quote-title">quote:</div><div class="ip-ubbcode-quote-content">Your propane system is equipped with a Type I cylinder connector. This connector makes it as easy to connect and disconnect as a garden hose.
The Type I connection system uses the excess flow pigtail hose, distinguished by the large green nylon swivel nut. The green swivel nut attaches to the outside of the cylinder valve with right hand threads. Tighten the swivel nut by hand. DO NOT use tools.
The safety features of this system prevent gas from flowing unless the connection is tight and will limit excessive gas flow. In cases of extreme heat, 240° to 300°F, at the connection, the connection to the cylinder will be shut down. </div></BLOCKQUOTE>
Rusty
|
|
|
12-29-2008, 01:30 PM
|
#32
|
Senior Member
Join Date: Aug 2001
Location: North America somewhere
Posts: 30,982
|
Someone must be wrong here, either the RV manufacturer or the author of propane101. Given Derek Gore's penchant for documenting everything he says, I suspect he is correct. I will phone my contact with NFPA and inquire about OPD operation.
__________________
2000 Winnebago Ultimate Freedom USQ40JD , ISC 8.3 Cummins 350, Spartan MM Chassis. USA IN 1SG 11B5MX,Infantry retired;Good Sam Life member,FMCA. " My fellow Americans, ask not what your country can do for you, ask what you can do for your country. John F. Kennedy
|
|
|
12-29-2008, 02:42 PM
|
#33
|
Senior Member
Join Date: Aug 2001
Location: North America somewhere
Posts: 30,982
|
I forgot about my Propane hose fire Dec 24. I have a propane smoker grill that I seldom use. I got it out, fired it up, put the turkey in, got a beer to sit and wait. I must have dozed off for a while because when I looked at the smoker the hose from the cylinder was on fire, not broken or cut, but weather-cracked. The hose had melted on one side with flames about 4" high (smoker burner still burning on high).
This tells me that the regulator was working properly, and - that the OPD valve does not close when the hose burns.
__________________
2000 Winnebago Ultimate Freedom USQ40JD , ISC 8.3 Cummins 350, Spartan MM Chassis. USA IN 1SG 11B5MX,Infantry retired;Good Sam Life member,FMCA. " My fellow Americans, ask not what your country can do for you, ask what you can do for your country. John F. Kennedy
|
|
|
12-29-2008, 03:18 PM
|
#34
|
Senior Member
Winnebago Owners Club
Join Date: Aug 2004
Location: Zephyrhills, FL
Posts: 935
|
Yes, the OPD is just that - to prevent the tank from being overfilled.
If, during an RV fire a gas line burns through or disconnects - say at the gas stove or gas heater the device at the tank will still be working to keep the gas pressure regulated. The gas would ignite but not be like a blowtorch. It would look pretty much like your counter-top gas range. In the fire we witnessed at Red River Ranch in Oklahoma I saw the propane burning where the refigerator had been. In the orangish glow of the rest of the fire there was a well defined bluish gas flame present.
__________________
'14 Winnebago Vista 35F, '14 GMC Terrain BlueOx Towing Pkg, SMI Stay-n-Play 49 States & 7 Provinces visited in MH | WIT W112365
|
|
|
12-30-2008, 03:49 AM
|
#35
|
Senior Member
Texas Boomers Club
Join Date: Jul 2000
Location: Cypress, Texas USA
Posts: 8,854
|
Are we confusing the function of OPDs and excess flow valves? These are not one and the same. The source for the text previously quoted is HERE. An excess flow POL is shown HERE.
Rusty
|
|
|
|
|
Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
|
|
Posting Rules
|
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts
HTML code is Off
|
|
|
|
» Recent Discussions |
|
|
|
|
|
|
|
|
|
|
|
|
|