"Do It Yourself" Oven Safety Valve System

[lowracer]

<font color="#FFFFFF" size="1">[ March 09, 2006 11:19 PM: Message edited by: lowracer ]</font>

[stoveman]

Hi Mark, Here you go with the photo's, Great!

Ok, The 1800 Pilot is a universal pilot. It can be mounted vertical or horizontal and can be used on Natural or LP gas and be connected with 3/16" or 1/4" tubing. So that explains the extra parts.

It is the installers choice. The Two small pieces with the very small holes are the Orifices for either Natl. or Propane. You put the desired Orifice in the bottom of the Pilot before you install the tubing. The smallest hole is for LP and the biggest is for Natural.

In the package with the Pilot, you have received two brass nuts and two ferrules for either 3/16" or 1/4" tubing.

The brass knurled part on the pilot is used to adjust the air for the pilot flame.

[stoveman]

Mark,
I'm so glad you have decided to do this project. Your photos are so good and they are worth the 1000 words! I just haven't had the time to go thru this project. Your additions to this thread will be a great.

The safety valve mounting and plumbing in the service cabinet is fairly straight forward, but I have plumbed the pilot and mounted it in several different ways. I have enlarged the pilot hole in the bottom of the oven to the 1" diameter that Chambers used and ran the pilot and connections up thru the hole and tied it down with a homemade bracket.

I've also, drilled holes in thru the side of the oven, ran the plumbing thru and mounted the pilot with a homemade bracket. It's just needs to be located about the same place as the old one.

One time I just drilled one additional 1/2' hole next to the original pilot hole and ran the thermocouple thru the new hole and the gas tube thru the old one. I prefer the new holes thru the side because you don't have to mess around under the stove.

I think I have hesitated to add this info earlier, because I was afraid that many new owners would bounce off the walls when I said to drill holes in their new oven. But, it's no big deal. The rock wool is packed so tight that it won't fall out and the constant burning pilot must have additional combustion air. The heat loss thru the new holes is replaced by the heat produced by the new pilot.

Also, remove the old flash tube mounted to the burner. Put the screws back into the burner to plug the holes.

Again, Thanks for documenting and pictures of your progress. Regards, Sam

[stoveman]

Here are some Aluminium tubing part numbers for Robertshaw tubing in case you want to order from an appliance parts business like Patriot supply. These numbers are for packages of 5 feet of tubing.


P/N 11-292 3/16" Aluminium tubing
P/N 11-293 1/4" Aluminium tubing
P/N 11-017 3/8" Aluminium tubing

[lowracer]

<font color="#FFFFFF" size="1">[ March 09, 2006 11:19 PM: Message edited by: lowracer ]</font>

[stoveman]

Ace Hardware is a good local source for Aluminium tubing and brass compression fittings. Here are some of the Ace part numbers to help find the needed supplies:


P/N 41901 3/8" Aluminium Tubing $1.49 per foot
P/N 41090 1/4" Aluminium tubing $1.29 per foot
P/N 41217 3/8" Brass Ferrules 3 in package
P/N 4038527 3/4" male pipe Thread to 1/8" MPT Hex Bushing
P/N 41235 Coupling 1/8" MPT to 3/16" Compression
P/N 41236 Coupling 1/8" MPT to 1/4" compression

[stoveman]

You are Right On! kinda. The last 3 items make up the pilot gas source connection. For this, you need the 3/4" black pipe Tee, The 4038527 to reduce the 3/4" Tee opening to 1/8" pipe, then either 41236 or 41235 that will screw into the 4038527.


While at Ace, look for a small Tubing Cutter and a tool called a Tube Bender. The Tube Bender is a great help in making tight bends in the tubing without collapsing the tube. Need one for 3/8" and 1/4". These look like a coil spring about 8" long. I bought a set at Lowe's years back.

The only item I haven't been able to find Retail is the Plug for the hole in the rear of the Thermostat where we remove the old pilot tube. It is 3/16" compression threads. You seem to be a good scrounge, maybe you can find a retail source. To better describe what we need, look at the 41236, it has 1/8" pipe threads on one end and 3/16" compression threads on the other. We need a Plug that has the 3/16" compression threads. Thanks, Sam

[chipperhiker]

Sam, where exaclty are we using 1/8" pipe?

-jenn

[stoveman]

The last 3 items make up the pilot gas source connection. For this, you need the 3/4" black pipe Tee, The 4038527 to reduce the 3/4" Tee opening to 1/8" pipe thread, then either 41236 or 41235 that will screw into the 4038527. Then connect either 3/16 or 1/4" pilot tubing to 41236 0r 41235.

[lowracer]

<font color="#FFFFFF" size="1">[ March 09, 2006 11:21 PM: Message edited by: lowracer ]</font>