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Old 08-22-2007, 12:11 AM   #1
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Regulator bench testing


I have a used Fisher Type R966 propane regulator, dated 5-76.

Can I bench test it for leaks and function before installing it on trailer? Or send it out for testing?

I know how to adjust pressure after install (using the manometer plans found here)

Did anyone ever find the “Fisher rebuild” guy?

I also intend to change out all three flex lines.

I have experienced the short life $40 "new" Marshall regulator disappointments.
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Old 09-09-2007, 11:15 PM   #2
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Quote:
Originally Posted by walter1
I have a used Fisher Type R966 propane regulator, dated 5-76.

Can I bench test it for leaks and function before installing it on trailer? Or send it out for testing?

I know how to adjust pressure after install (using the manometer plans found here)

Did anyone ever find the “Fisher rebuild” guy?

I also intend to change out all three flex lines.

I have experienced the short life $40 "new" Marshall regulator disappointments.
There never has been a LPG regulator rebuild kit, and I doubt there ever will be.

The risk is huge.

Even Robert Shaw will tell you "DON'T."

Andy
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Old 09-27-2007, 10:03 PM   #3
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But...How do you bench test the Fisher?

I have the same kind of Fisher that needs new hoses. Do you know how we can test these before reinstalling them? Just curious. Want to do the right (SAFE) thing. Thanks!
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Old 09-27-2007, 10:55 PM   #4
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I have the same kind of Fisher that needs new hoses. Do you know how we can test these before reinstalling them? Just curious. Want to do the right (SAFE) thing. Thanks!
Test the Fischer regulator, "after" installation.

The proper way to set the regulator pressure is to have the manometer hooked up to a stove burner.

Run the furnace if possible, and the water heater at the same time.

The correct pressure is 11 to 13 inches of water column pressure.

Setting it to 12.5 inches, is preferred, especially if you will be in the mountains at all.

Setting a regulator with a small flow of LPG, can be very mis-leading.

I have seen regulaors that with, as an example, one burner going on the stove, seemed fine.

Fired up the furnace and the pressure went to zero.

DO NOT ever take a regulator apart. If it cannot be adjusted properly, throw it away.

Repair parts do not exist for any LPG regulator.

Andy
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Old 09-27-2007, 11:11 PM   #5
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Got it, Big Guy! Yoo Da Man! Thanks.
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