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Audio and Video Talk
Valves / Vacuum Tubes
Valve etiquette and care
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<blockquote data-quote="charles" data-source="post: 499958" data-attributes="member: 2759"><p>Use Isoprophyl Alcohol to get the fingermarks off. Available at some chemists.</p><p></p><p>Agree with Steerpike that the European valve printing comes off very easy. To clean these valves full of dust and grime is a delicate task. </p><p></p><p>First let the tap water just slowly flow over the valve, then some of the accumulated dust may disappear.</p><p></p><p>Then clean it bit by bit with soft soap solution but be VERY CAREFUL when cleaning the printing part.</p><p></p><p>I have cleaned hundreds of valves and also "lost" some of the printing.</p><p></p><p>Some Philips EL34 valves have acid etched numbers (xfr..) on the glass so even if the printing part is gone one could still identify the valve by this number.</p></blockquote><p></p>
[QUOTE="charles, post: 499958, member: 2759"] Use Isoprophyl Alcohol to get the fingermarks off. Available at some chemists. Agree with Steerpike that the European valve printing comes off very easy. To clean these valves full of dust and grime is a delicate task. First let the tap water just slowly flow over the valve, then some of the accumulated dust may disappear. Then clean it bit by bit with soft soap solution but be VERY CAREFUL when cleaning the printing part. I have cleaned hundreds of valves and also "lost" some of the printing. Some Philips EL34 valves have acid etched numbers (xfr..) on the glass so even if the printing part is gone one could still identify the valve by this number. [/QUOTE]
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Audio and Video Talk
Valves / Vacuum Tubes
Valve etiquette and care
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