Propane Regulators and Appliances

[WNYBill]

I am adding to my outdoor kitchen. I have a 100 lb propane cylinder with a regulator that says output 10.2-13 WC. I have run a copper line and have it connected to a flat top grill, a fish cooker and a BBQ grill. The Blackstone flat top is brand new and the way it is plumbed I have to use the regulator that came with it. I am not getting enough propane volumn, I can light one burner but when I try to light the 2nd burner the first goes out. Blackstone says I am turning the gas on too fast and a safety device trips and shuts the volumn down. I have a problem understanding that. Is there a possibility I am constricting flow by useing 2 regulators? The other appliances work, one without a regulator aand the other with one.

 

[WNYBill]

The regulator on the tank is a normal Integral Twin Stage Regulator. The regulators on the appliances are the usual ones that connect to a 20 Lb cylinder.

 

[Steve@Advance]

If the fish cooker and BBQ will run at the same time, I would say you have sufficient pressure and volume.

If the grill won't run by itself, something is wrong.

What does the owners manual say about required pressure? If it is within the 10-13 WC it should work.

The safety device they are talking about is designed to restrict the flow if it senses an over volume of gas passing through the regulator. As in more than could ever be required for normal operation, as in a broken line or open connection.

That can false trip sometimes on initial start up when the lines are empty and the bottle gets opened quickly, the initial rush can trip it, but it should be a one time event. Once everything is up to pressure it shouldn't matter how fast you open the burner valve.

I suspect something is wrong with the regulator in the flat top, or there is a restriction in the line feeding the regulator. If you get good flow at the regulator, I would contact the seller, see if they will exchange it.

 

[grizz02]

how big of copper line and how far?

 

[JMOR]

10.2-13 is pressure that appliance needs, i.e., the regulator output pressure to the appliance & I say that is too low to be feeding the input to a regulator.

 

[David G]

I do not know if this applies, but I piped mine into house propane and threw away the regulators and tanks.

 

[Russ from MN]

My guess your regulator and tubing is too small.

 

[David G]

I would doubt you want two regulators, put a gauge on it.

 

[guido]

Hello WNYBill,

You need to remove the appliance regulator. All you need is a connection to the 100# tank, which has the regulator, and it will feed all other appliances minus their respective regulators,

Guido.

 

[moresmoke]

If you look at the regulator on the Blackstone, there is probably a tiny office hole on the inlet. Your already reduced pressure propane can?t flow enough volume through there.

You need to lose one of the regulators.

 

[WNYBill]

Thanks for the replies. Can't run 2 regulators, I am guessing that the 11 WC from the cylinder is not enough to work the appliance regulator. Anyway, by using the cylinder Integral Twin Stage Regulator and getting rid of the appliance regulator, everything works.

Bill

 

[WNYBill]

Everything is working correctly now. I was trying to run gas through 2 regulators.... that doesn't work. I am operating off the tank regulator and have removed all the applicance regulators. I am using quick disconnect with ball valve to change appliances.

Bill