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Installing Brass Tubing Inserts
In a Lauter-Humana Stack

Regarding reaming out the lead tubing, this is a little tricky. Most simply put, the I.D. of the lead tubing is smaller than the O.D. of the brass tubing insert. So, the lead tubing it has to be carefully drilled out to a larger diameter where it passes through the valve block mounting board. I do the job with a manual hand held drill (not an electric drill). The drill bit I use is 0.002" larger than the O.D. of the brass insert. I secure a depth limiter (a brass collar with a set screw) on the bit so I don't accidentally drill the hole too deeply. Here's why: As you know, the lead tubing bends at nearly a 90 degree angle on the back side of the mounting board. If the hole is accidentally drilled too deep, it will poke a hole in the lead tubing. In fact, I only drill out the lead tubing to a depth of 1/2".

What's interesting is how easy it is to drill out the tubing. Basically, you're not drilling lead but rather lead oxide - which is quite a bit softer than the lead. In a sense, you're not really drilling out the lead but rather cleaning off the corrosion that has accumulated over the past eighty plus years. Once this is done, I paint on a layer of Phenoseal around one end of the insert and gently work it into the hole. To insure that each insert goes in the same exact distance, I place a 1/2" metal block next to the insert and gently tap the insert to its final 'resting point'. Then I let the Phenoseal dry thoroughly. Once it's dry, I apply a bead of Phenoseal around the base of each insert with an eye dropper to insure a 100% air tight seal.

I also use Phenoseal to secure the elbows into the block valves. Here again, I do it in two steps (as above). Once to 'cement' it in place and a second time to insure an excellent seal. After that is done, I often paint a thin coat of Phenoseal over the cloth on the block valve. This helps insure that it is also 100% air tight.

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This page was last revised February 8, 2013 by John A. Tuttle, who Assumes No Liability
For The Accuracy or Validity of the Statements and/or Opinions
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Since "Player-Care" is an internet business, I prefer that we correspond via E-Mail (click here to fill out the 'Request Form'). However, if I'm not in the middle of some other activity, you can reach me at 732-840-8787. But please understand that during the hours from 8AM-5PM EST (Mon-Sat), I'm generally quite busy. So, I probably won't answer the phone. If you get the answering machine, please leave a detailed message stating the reason for your call. Also, repeat your name and phone number clearly and distinctly. By necessity, I prioritize everything in my life. And, if you call and just leave your name and number, and ask me to call you back, it might be a day or two before I return your call. Why? Because I don't know why you want me to call and I might not be prepared to assist you in an effective and efficient manner. If you leave me an E-Mail address (which I prefer), spell it out phonetically. The more you do to help me, the more I can help you in return. Don't rush. You have four minutes to record your message.


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