Older animat mixing valve leaking at stem...

[webbie]

OK, you real experts. Stump the Chump. A friend sent me this:

"I have a Amimat 1 1/2" - 4 way mixing valve on my heating system. (from Finland)(25 or more years old). I got it from Charlie Reichner back when I was selling Tarms.

The valve developed a leak out of the stem and I do not see a packing nut or way to stop the leak.

Do you know anyone who is knowledgeable about these older valves - or someone who might have parts? I searched the web and did not find much."

????

 

[BoilerMan]

Can it be disassembled from the bottom? If so, it should have one or two "O" rings on the valve stem which can be replaced with standard service ones. I like to use a small amount of silicone based dielectric grease for assembly lube as it won't swell the rubber.

TS

 

[webbie]

He fixed it! I'm putting his results here for posterity....

"
this was a 1/2" x 5/16" x 3/32" o-ring. (probably metric but who can measure that way.) All the 1/2" o-rings I found at the first seven stores were either 1/16" or 1/8" thick. The 1/16" ones leaked. The 1/8" ones would not allow the stem to fit back in. I went to home depot, lowes, 3 hardware stores, auto parts stores etc. Finally found it at a hydraulic supply house. The guy gave it to me for free.
It also requires a gasket. I didn't even try to find that. Used permatex form a gasket - it worked well."

 

[rkusek]

Great! Always like when you can fix old stuff. Repaired an alternator on my 26 yr old JD 332 diesel garden tractor myself. 2 bearings on eBay for $19 shipped and a loaned bearing puller from the parts store. New one was 400 bones.

 

[BoilerMan]

O rings are always pesky the find in the correct size. There is a diesel shop which I go to if I need to find weird metric sizes (I'm a European car guy).

Glad to hear all is well. Permatex is holding MANY fluids in their correct places in my cars and my heating system as well!

TS