โJul-04-2015 02:12 PM
โJul-07-2015 07:05 PM
wa8yxm wrote:Dutch_12078 wrote:
By Federal Law POL valves were discontinued in 2000 and can no longer be refilled.
I took a POL tank into the propane service just a few months ago.. it came back Acme but it went in POL
Another thing.. The ACME fitting (OPD) has a valve inside the outlet that cuts off flow if no hose/device is attached.. OR if it's not firmly attached.. Some older POL fittings may not depress this valve (Though I have never heard of that)
Good luck.
โJul-07-2015 05:03 PM
Dutch_12078 wrote:
By Federal Law POL valves were discontinued in 2000 and can no longer be refilled.
โJul-07-2015 11:14 AM
โJul-06-2015 05:38 PM
Old-Biscuit wrote:
OPD......Overfill Protection Device. Basically an internal float that shuts off at 80% liquid level. Device is designed to help prevent overfilling of a propane cylinder
Doesn't stop flow of propane out of cylinder only into cylinder when filling.
ACME nut...large green nut on hose.
*Has a 'nipple' that opens a spring activated shutoff valve inside propane cylinder service valve. Propane will not flow out of cylinder unless hose is attached and nipple is holding spring loaded valve open.
*Has a 'thermal bushing' that will melt if temps exceed 240*F. When it melts the 'nipple' slips back about 1/4" allowing spring activated valve in cylinder service valve to close.
*Has a flow limiting device...excess flow. Basically a ball bearing that moves towards back of ACME nut when you open cylinder service valve. Then will move back to center position when downstream system is pressurized.
This excess flow device will close off if hose breaks...leak occurs.
(But if you open cylinder service valve quickly.....ball bearing may not return to center position allowing flow. Just close service valve...wait 30 seconds. Open valve slowly)
2 stage LP Regulator
1st stage reduces cylinder pressure to 15 PSI. 2nd stage reduces to 0.4 PSI.
Regulators are typically rated to flow 200,000 PLUS btu per hour...otherwise they wouldn't be able to supply enough propane flow for all propane appliances.
100% of propane devices should be in service to set regulator for 11"WC (can be done with at least 50%)
No flow from cylinder....
ACME nut not on properly...nipple isn't opening the cylinder service valve spring activated shutoff
OR
Opened cylinder service valve to quickly and tripped the flow device inside ACME nut.
โJul-06-2015 07:51 AM
โJul-05-2015 11:56 PM
โJul-05-2015 03:07 PM
โJul-05-2015 02:14 PM
Dutch_12078 wrote:Old-Biscuit wrote:wa8yxm wrote:Crazy Ray wrote:
People keep saying NEW OPD Valves, there not new became law Oct 1998. IS THAT NEW? JMO
Hey... I was made in 1950 So 1998 is NEW to me.
And there are still alot of POL tanks out there.
By Federal Law POL valves were discontinued in 2000 and can no longer be refilled.
POL only valves were phased out, but every externally ACME threaded OPD LP tank valve I've seen is also threaded internally for a POL connection. Even the valve on the 2015 manufactured 40# tank I purchased a few months ago.
โJul-05-2015 01:43 PM
Old-Biscuit wrote:wa8yxm wrote:Crazy Ray wrote:
People keep saying NEW OPD Valves, there not new became law Oct 1998. IS THAT NEW? JMO
Hey... I was made in 1950 So 1998 is NEW to me.
And there are still alot of POL tanks out there.
By Federal Law POL valves were discontinued in 2000 and can no longer be refilled.
โJul-05-2015 12:58 PM
wa8yxm wrote:Crazy Ray wrote:
People keep saying NEW OPD Valves, there not new became law Oct 1998. IS THAT NEW? JMO
Hey... I was made in 1950 So 1998 is NEW to me.
And there are still alot of POL tanks out there.
โJul-05-2015 11:47 AM
Crazy Ray wrote:
People keep saying NEW OPD Valves, there not new became law Oct 1998. IS THAT NEW? JMO
โJul-05-2015 09:11 AM
โJul-05-2015 07:54 AM
Crazy Ray wrote:
People keep saying NEW OPD Valves, there not new became law Oct 1998. IS THAT NEW? JMO
โJul-04-2015 11:57 PM