Peter Munro Posted February 21, 2011 Share Posted February 21, 2011 Thanks for all those interesting replies. Unfortunately, I was not referring to inboard Schwimmers but rather a reservoir (remote from the soundboard) having a floating pan instead of ribs - one often sees older double rise bellows converted to this type, presumably because it is less expensive than re-leathering the original. My original question in regard to this was in relation to calculation of size. I have seen quite small reservoirs of this type supplying quite large divisions, although with internal disc valves controlling the input of wind from the blower - presumably because these are faster acting than an external roller blind or guillotine. Sorry if I didn't make myself clear in the previous post. PM Link to comment Share on other sites More sharing options...
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