Home |
Search |
Today's Posts |
|
Metalworking (rec.crafts.metalworking) Discuss various aspects of working with metal, such as machining, welding, metal joining, screwing, casting, hardening/tempering, blacksmithing/forging, spinning and hammer work, sheet metal work. |
Reply |
|
LinkBack | Thread Tools | Display Modes |
|
#1
Posted to rec.crafts.metalworking
|
|||
|
|||
bbq tank adaptors
There's a cheap gizmo that purports to let you fill a small propane tank
from your bigger bbq tank. Are these legit? |
#2
Posted to rec.crafts.metalworking
|
|||
|
|||
bbq tank adaptors
On Tuesday, March 15, 2016 at 2:42:54 PM UTC-4, unk wrote:
There's a cheap gizmo that purports to let you fill a small propane tank from your bigger bbq tank. Are these legit? I have had one for many years. Used it earlier this week. I have a wood stove in the basement and use a small hand held torch to start the fire. The little tanks tend to leak after they have been refilled once or twice, so I install a torch on them after refilling. Also the propane does not readily flow into the small tank even thought the tank is lower than the bigger tank. So I put the small tank in the freezer ( with torch istalled, So when I take it out the pressure in the small tank is low. Works best if the small tank is about 1/4 full. Dan |
#3
Posted to rec.crafts.metalworking
|
|||
|
|||
bbq tank adaptors
On 03/15/2016 11:39 AM, unk wrote:
There's a cheap gizmo that purports to let you fill a small propane tank from your bigger bbq tank. Are these legit? Of course they are; I bought one from HF a half-dozen years ago, but they've been around a lot longer. Hook it up, invert the tank, then open the valve for a few minutes to let the liquid go in to the smaller tank. Just remember that it's not legal (DOT) to transport a refilled one-pound container. Jon |
#4
Posted to rec.crafts.metalworking
|
|||
|
|||
bbq tank adaptors
"unk" wrote in message ... There's a cheap gizmo that purports to let you fill a small propane tank from your bigger bbq tank. Are these legit? http://www.harborfreight.com/propane...kit-61555.html |
#5
Posted to rec.crafts.metalworking
|
|||
|
|||
bbq tank adaptors
On Tue, 15 Mar 2016 18:29:46 -0400, "Jim Wilkins"
wrote: "unk" wrote in message ... There's a cheap gizmo that purports to let you fill a small propane tank from your bigger bbq tank. Are these legit? http://www.harborfreight.com/propane...kit-61555.html I'll see you and raise you one @ $6.68. http://tinyurl.com/j5r4uny without the middle man. I haven't used mine with the new OPD-valved tank yet, but looking at a bare OPD valve, I see that it will still work with an inverted tank. How safe is it to use a pair of needle nosed pliers to open the pressure relief valve to completely fill the small tank? That's the only "iffy" part, since it's steel on steel with propane gas rushing past it. Has anyone machined a brass lifter? -- Our main business is not to see what lies dimly at a distance but to do what lies clearly at hand. --Thomas Carlyle |
#6
Posted to rec.crafts.metalworking
|
|||
|
|||
bbq tank adaptors
On 3/15/2016 2:39 PM, unk wrote:
There's a cheap gizmo that purports to let you fill a small propane tank from your bigger bbq tank. Are these legit? I made one years ago by soldering spare connectors together. Depending upon how much propane you use in a torch, the $18 cost might take a while to recover. As Dan said, refilled tanks tend to leak & need to have torches permanently attached. The small tanks are labeled "Not for refill" - if that matters to you. The propane only flows from the large tank to the small one if the pressure in the large one is greater than it is in the small one. (And the large tank must be upside down.) Since the propane is liquid in the tanks, this means that the temperature of the large one must be higher than the small one. I'm not sure if OPD tanks will work upside down - anybody know for sure? Bob |
#7
Posted to rec.crafts.metalworking
|
|||
|
|||
bbq tank adaptors
On Tue, 15 Mar 2016 19:41:55 -0400, Bob Engelhardt
wrote: On 3/15/2016 2:39 PM, unk wrote: There's a cheap gizmo that purports to let you fill a small propane tank from your bigger bbq tank. Are these legit? I made one years ago by soldering spare connectors together. Depending upon how much propane you use in a torch, the $18 cost might take a while to recover. As Dan said, refilled tanks tend to leak & need to have torches permanently attached. The small tanks are labeled "Not for refill" - if that matters to you. The propane only flows from the large tank to the small one if the pressure in the large one is greater than it is in the small one. (And the large tank must be upside down.) Since the propane is liquid in the tanks, this means that the temperature of the large one must be higher than the small one. I'm not sure if OPD tanks will work upside down - anybody know for sure? Bob They will not work upside down. |
#8
Posted to rec.crafts.metalworking
|
|||
|
|||
bbq tank adaptors
On 3/15/2016 8:20 PM, Gunner Asch wrote:
On Tue, 15 Mar 2016 19:41:55 -0400, Bob Engelhardt ... I'm not sure if OPD tanks will work upside down - anybody know for sure? They will not work upside down. OK, in that case there is another option. Both tanks can be right side up, but propane gas is transferred, not liquid propane. The pressure (temperature) in the big tank is greater than the small tank & gas flows in. It condenses there because of the lower temperature, keeping the pressure lower. This will take much longer. The constant evaporation in the big tank and condensation in the small means that the big tank is cooling and the small heating, lowering the pressure difference. So, it may be necessary to heat the large & cool the small while transferring. E.g., large in sun & small in ice bath. It's beginning to sound like a lot of trouble, isn't it? Bob |
#9
Posted to rec.crafts.metalworking
|
|||
|
|||
bbq tank adaptors
On Tue, 15 Mar 2016 20:56:46 -0400, Bob Engelhardt
wrote: On 3/15/2016 8:20 PM, Gunner Asch wrote: On Tue, 15 Mar 2016 19:41:55 -0400, Bob Engelhardt ... I'm not sure if OPD tanks will work upside down - anybody know for sure? They will not work upside down. OK, in that case there is another option. Both tanks can be right side up, but propane gas is transferred, not liquid propane. The pressure (temperature) in the big tank is greater than the small tank & gas flows in. It condenses there because of the lower temperature, keeping the pressure lower. This will take much longer. The constant evaporation in the big tank and condensation in the small means that the big tank is cooling and the small heating, lowering the pressure difference. So, it may be necessary to heat the large & cool the small while transferring. E.g., large in sun & small in ice bath. It's beginning to sound like a lot of trouble, isn't it? Bob I just have a hose that connects to my 20 lb tank - and my torch connects directly to the hose. Takes the 1 lb tank and refilling out of the equation. |
#11
Posted to rec.crafts.metalworking
|
|||
|
|||
bbq tank adaptors
|
#12
Posted to rec.crafts.metalworking
|
|||
|
|||
bbq tank adaptors
|
#13
Posted to rec.crafts.metalworking
|
|||
|
|||
bbq tank adaptors
"Bob Engelhardt" wrote in message
... On 3/15/2016 8:20 PM, Gunner Asch wrote: On Tue, 15 Mar 2016 19:41:55 -0400, Bob Engelhardt ... I'm not sure if OPD tanks will work upside down - anybody know for sure? They will not work upside down. OK, in that case there is another option. Both tanks can be right side up, but propane gas is transferred, not liquid propane. The pressure (temperature) in the big tank is greater than the small tank & gas flows in. It condenses there because of the lower temperature, keeping the pressure lower. This will take much longer. The constant evaporation in the big tank and condensation in the small means that the big tank is cooling and the small heating, lowering the pressure difference. So, it may be necessary to heat the large & cool the small while transferring. E.g., large in sun & small in ice bath. It's beginning to sound like a lot of trouble, isn't it? Bob The nights are predicted to drop below 20F this weekend. Perhaps you could insulate the larger tank with bubblewrap etc and leave them out overnight. --jsw |
#14
Posted to rec.crafts.metalworking
|
|||
|
|||
bbq tank adaptors
On Tuesday, March 15, 2016 at 8:23:53 PM UTC-4, Gunner Asch wrote:
I'm not sure if OPD tanks will work upside down - anybody know for sure? Bob They will not work upside down. I think some will work and others will not. Dan |
#15
Posted to rec.crafts.metalworking
|
|||
|
|||
bbq tank adaptors
On Tue, 15 Mar 2016 18:00:55 -0700 (PDT), "
wrote: On Tuesday, March 15, 2016 at 8:23:53 PM UTC-4, Gunner Asch wrote: I'm not sure if OPD tanks will work upside down - anybody know for sure? Bob They will not work upside down. I think some will work and others will not. Dan The reason the change over to OPD tanks..was to shut off the fuel if the tank was in any position other than vertical. This to prevent fires if the tank got kicked over. There is a float in the bottom of the new three cornered valve that shuts off the fuel if the tank is other than vertical. Which makes the capacity of the 5 gallon tank slightly smaller..I've heard they are 4.5 gallons..but..who knows? Gunner |
#16
Posted to rec.crafts.metalworking
|
|||
|
|||
bbq tank adaptors
On 03/15/2016 07:08 PM, Gunner Asch wrote:
On Tue, 15 Mar 2016 18:00:55 -0700 (PDT), " wrote: On Tuesday, March 15, 2016 at 8:23:53 PM UTC-4, Gunner Asch wrote: I'm not sure if OPD tanks will work upside down - anybody know for sure? Bob They will not work upside down. I think some will work and others will not. Dan The reason the change over to OPD tanks..was to shut off the fuel if the tank was in any position other than vertical. This to prevent fires if the tank got kicked over. There is a float in the bottom of the new three cornered valve that shuts off the fuel if the tank is other than vertical. Which makes the capacity of the 5 gallon tank slightly smaller..I've heard they are 4.5 gallons..but..who knows? OPD is "Overflow Prevention Device", which was an improvement on the old system by which a tube extended down from the valve to limit the amount of liquid that could be filled into the tank. Unfortunately, some of the tubes would slip out (hot/cold cycles), leading to the tanks getting filled to the top. I have no trouble refilling my 1# propane tank from the upside-down larger OPD-equipped tank, maybe some of them use a different mechanism, I dunno. Jon |
#17
Posted to rec.crafts.metalworking
|
|||
|
|||
bbq tank adaptors
On Tue, 15 Mar 2016 17:20:30 -0700, Gunner Asch
wrote: On Tue, 15 Mar 2016 19:41:55 -0400, Bob Engelhardt wrote: On 3/15/2016 2:39 PM, unk wrote: There's a cheap gizmo that purports to let you fill a small propane tank from your bigger bbq tank. Are these legit? I made one years ago by soldering spare connectors together. Depending upon how much propane you use in a torch, the $18 cost might take a while to recover. As Dan said, refilled tanks tend to leak & need to have torches permanently attached. The small tanks are labeled "Not for refill" - if that matters to you. The propane only flows from the large tank to the small one if the pressure in the large one is greater than it is in the small one. (And the large tank must be upside down.) Since the propane is liquid in the tanks, this means that the temperature of the large one must be higher than the small one. I'm not sure if OPD tanks will work upside down - anybody know for sure? Bob They will not work upside down. Are you sure? I haven't tried it yet, but judging by the configuration, they sure as hell will. They're just like a carb float valve, so they should allow continuous flow upside down. http://www.propane101.com/opdcylindervalves.htm They prevent overfilling by shutting off the inlet when the liquid propane gets high, just like a carb needle valve. -- Our main business is not to see what lies dimly at a distance but to do what lies clearly at hand. --Thomas Carlyle |
#18
Posted to rec.crafts.metalworking
|
|||
|
|||
bbq tank adaptors
On Wed, 16 Mar 2016 06:16:55 -0700, Larry Jaques
wrote: On Tue, 15 Mar 2016 17:20:30 -0700, Gunner Asch wrote: On Tue, 15 Mar 2016 19:41:55 -0400, Bob Engelhardt wrote: On 3/15/2016 2:39 PM, unk wrote: There's a cheap gizmo that purports to let you fill a small propane tank from your bigger bbq tank. Are these legit? I made one years ago by soldering spare connectors together. Depending upon how much propane you use in a torch, the $18 cost might take a while to recover. As Dan said, refilled tanks tend to leak & need to have torches permanently attached. The small tanks are labeled "Not for refill" - if that matters to you. The propane only flows from the large tank to the small one if the pressure in the large one is greater than it is in the small one. (And the large tank must be upside down.) Since the propane is liquid in the tanks, this means that the temperature of the large one must be higher than the small one. I'm not sure if OPD tanks will work upside down - anybody know for sure? Bob They will not work upside down. Are you sure? I haven't tried it yet, but judging by the configuration, they sure as hell will. They're just like a carb float valve, so they should allow continuous flow upside down. http://www.propane101.com/opdcylindervalves.htm They prevent overfilling by shutting off the inlet when the liquid propane gets high, just like a carb needle valve. That's what the one I dismantled looked like. --- Gerry :-)} London,Canada |
#19
Posted to rec.crafts.metalworking
|
|||
|
|||
bbq tank adaptors
On Tue, 15 Mar 2016 19:41:55 -0400, Bob Engelhardt
wrote: I'm not sure if OPD tanks will work upside down - anybody know for sure? Bob to clarify..OPD tanks do not work upside down, however forklift tanks and other similar tanks do not have the OPD valve. I have (1) standard non OPD tank among a half dozen or so new tanks..which I can still get filled (filler is a friend) and thats what I use to fill 1 lb tanks. If he leaves..Ill be making an adapter to fill them off the forklift tanks. |
#20
Posted to rec.crafts.metalworking
|
|||
|
|||
bbq tank adaptors
On Tue, 15 Mar 2016 19:41:55 -0400, Bob Engelhardt
wrote: On 3/15/2016 2:39 PM, unk wrote: There's a cheap gizmo that purports to let you fill a small propane tank from your bigger bbq tank. Are these legit? I made one years ago by soldering spare connectors together. Depending upon how much propane you use in a torch, the $18 cost might take a while to recover. As Dan said, refilled tanks tend to leak & need to have torches permanently attached. The small tanks are labeled "Not for refill" - if that matters to you. The propane only flows from the large tank to the small one if the pressure in the large one is greater than it is in the small one. (And the large tank must be upside down.) Since the propane is liquid in the tanks, this means that the temperature of the large one must be higher than the small one. I'm not sure if OPD tanks will work upside down - anybody know for sure? Bob OPD won't work upside down. My experience is "used" 1 lb tanks leak - forget about refilled. |
#21
Posted to rec.crafts.metalworking
|
|||
|
|||
bbq tank adaptors
|
#22
Posted to rec.crafts.metalworking
|
|||
|
|||
bbq tank adaptors
On 3/15/2016 7:41 PM, Bob Engelhardt wrote:
.... I'm not sure if OPD tanks will work upside down - anybody know for sure? There are different answers, so I looked into it. OPD's do not retrict upside down flow. From http://www.propane101.com/opdcylindervalves.htm quote Because the OPD valve is not designed to restrict flow out of the cylinder, it's only designed to stop flow into the cylinder during the filling process. OPD equipped propane cylinders _will_ allow liquid propane into gas lines and hoses if tipped over or inverted. Overfill Prevention Devices are not a safety mechanism used or actuated during cylinder usage. /quote There is another safety feature of OPD's - they prevent flow if nothing is attached: quote OPD valves are also designed to only allow propane into and out of the bottle if attached to the appropriate hose end connection. ... OPD valves will not allow propane out of the bottle if it is not hooked up to anything. /quote Bob |
#23
Posted to rec.crafts.metalworking
|
|||
|
|||
bbq tank adaptors
On Tue, 15 Mar 2016 19:41:55 -0400, Bob Engelhardt
wrote: On 3/15/2016 2:39 PM, unk wrote: There's a cheap gizmo that purports to let you fill a small propane tank from your bigger bbq tank. Are these legit? I made one years ago by soldering spare connectors together. Depending upon how much propane you use in a torch, the $18 cost might take a while to recover. As Dan said, refilled tanks tend to leak & need to have torches permanently attached. The small tanks are labeled "Not for refill" - if that matters to you. The propane only flows from the large tank to the small one if the pressure in the large one is greater than it is in the small one. (And the large tank must be upside down.) Since the propane is liquid in the tanks, this means that the temperature of the large one must be higher than the small one. I'm not sure if OPD tanks will work upside down - anybody know for sure? Bob I generaly rely on one of the almost empty BBQ tanks I buy for $0.50 and a 4 foot adapter hose that usually costs me a buck whenever I need to use one or more "turbo" torches. Last fall I lucked out and bought a full five pound bottle for a dollar - when it is empty it will become my regulated surge tank for an air brush or whatever I need at the moment. --- Gerry :-)} London,Canada |
#24
Posted to rec.crafts.metalworking
|
|||
|
|||
bbq tank adaptors
|
#27
Posted to rec.crafts.metalworking
|
|||
|
|||
bbq tank adaptors
|
#28
Posted to rec.crafts.metalworking
|
|||
|
|||
bbq tank adaptors
On Tue, 15 Mar 2016 18:39:43 -0000 (UTC), unk wrote:
There's a cheap gizmo that purports to let you fill a small propane tank from your bigger bbq tank. Are these legit? It is ilegal to transport a refilled non-refillable tank. |
#29
Posted to rec.crafts.metalworking
|
|||
|
|||
bbq tank adaptors
On Tuesday, March 15, 2016 at 8:04:40 PM UTC-4, Clare wrote:
On Tue, 15 Mar 2016 18:39:43 -0000 (UTC), unk wrote: There's a cheap gizmo that purports to let you fill a small propane tank from your bigger bbq tank. Are these legit? It is illegal to transport a refilled non-refillable tank. I guess you are referring to Canada's legal system. However, in America there may be exemptions regarding chemical storage, handling, transportation, and use. This is enforceable under "national code" from the NFPA (National Fire Protection Association) or per recognized "material safety data manuals" and is enforceable by local residential code or other authorities. Various states may delegate recommended code adoption and enforcement authority to subordinate local jurisdictions and there may be exemptions. Some states enforce these codes much less frequently than others. |
#30
Posted to rec.crafts.metalworking
|
|||
|
|||
bbq tank adaptors
On Tue, 15 Mar 2016 20:04:38 -0400, wrote:
On Tue, 15 Mar 2016 18:39:43 -0000 (UTC), unk wrote: There's a cheap gizmo that purports to let you fill a small propane tank from your bigger bbq tank. Are these legit? It is ilegal to transport a refilled non-refillable tank. Only across state lines. Intra-state is just fine. Isn't that a find little law that Bernz-O-Matic bought a few decades ago? John John DeArmond http://www.neon-john.com http://www.tnduction.com Tellico Plains, Occupied TN See website for email address |
#31
Posted to rec.crafts.metalworking
|
|||
|
|||
bbq tank adaptors
On Tue, 15 Mar 2016 18:39:43 -0000 (UTC), unk wrote:
There's a cheap gizmo that purports to let you fill a small propane tank from your bigger bbq tank. Are these legit? no. Here's how to do it correctly. http://www.neon-john.net/RV/Propane/propane_refill.htm John John DeArmond http://www.neon-john.com http://www.tnduction.com Tellico Plains, Occupied TN See website for email address |
#32
Posted to rec.crafts.metalworking
|
|||
|
|||
bbq tank adaptors
"Neon John" wrote in message
... On Tue, 15 Mar 2016 18:39:43 -0000 (UTC), unk wrote: There's a cheap gizmo that purports to let you fill a small propane tank from your bigger bbq tank. Are these legit? no. Here's how to do it correctly. http://www.neon-john.net/RV/Propane/propane_refill.htm John John DeArmond http://www.neon-john.com http://www.tnduction.com Tellico Plains, Occupied TN See website for email address Thanks a lot, John. --jsw |
#33
Posted to rec.crafts.metalworking
|
|||
|
|||
bbq tank adaptors
On 3/16/2016 9:22 PM, Neon John wrote:
no. Here's how to do it correctly. http://www.neon-john.net/RV/Propane/propane_refill.htm Nice write up |
Reply |
Thread Tools | Search this Thread |
Display Modes | |
|
|
Similar Threads | ||||
Thread | Forum | |||
Electrical adaptors | UK diy | |||
USB Skype Adaptors | Electronics | |||
French Adaptors | UK diy | |||
Adaptors | Electronics | |||
BC to ES Lamp Adaptors . | UK diy |