The Landi Renzo CNG regulator is a 2 stage unit. In order to keep the regulator from freezing up, while reducing the CNG flow to a usable pressure, inlet and outlet ports are provided. These ports allow antifreeze, tapped from the heater lines, to warm the regulator. |
Right out of the block I ran into a problem. The branch line, on the "Y" tee, was 1/2" and the supplied hose was 3/8". So an adapter was going to have to be made. |
Here I am cutting a piece of 1/2" copper water line. This will match the branch line diameter. |
The copper transitional piece is chucked in the lathe and each end is cleaned up. |
I picked this brass fitting up at the hardware store. It has a sweet 3/8" barb on one side which fits the 3/8" hose perfectly.
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I chucked it in the lathe and cut the threaded end down to fit the inside diameter of the copper transitional piece. |
Here the pieces are fitted, prepped for soldering and soldered.
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A piece of 1/2" hose is fitted to the tee and is ready for the adapter. |
The adapter is complete and assembled on the branch "Y" tee. A perfect solution to an encountered problem. |
Here both of the finished adapters are shown. |
This is a nice trick for installing the "Y" tee. Using a pair of needle nosed vice grips clamp the heater line above the below the proposed splice.
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Then use cutters that provide a clean straight cut. These are tree pruners, believe it or not they provide a perfect cut. |
Don't forget to place a rag under the hose. The hose is cut and a little antifreeze is caught in the rag. |
Unfortunately it required 10 gear clamps to do the deed. It looks like a mess. I should of used a different clamping system. What was I thinking. |
I found that the inlet and outlet lines needed to travel all the way across to the other side of the engine compartment. This is the making of a rubber insulator. |
Every place the hoses were exposed to ware damage, a rubber insulator was added, to protect the hoses. |
Finally we arrive at the regulator. A couple of zip ties make for a neat job.
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I clamped the lower hose first and then poured antifreeze into the top hose until all the air was purged out. The upper hose was then clamped. |