For those of you running two stage pumps, do you leave your transfer valve set in the pressure or volume setting? Just curious as to why you use this particular setting; tradition, manufacturer's recommendation, department SOP or what? In my department we always left the pumps in pressure until we started pumping more than half the capacity of the pump, at which time we switched over to volume. This was done of course to cause the least amount of strain on the engine. Recently, we have eliminated small booster lines which required high pressures (our smallest lines are 1 3/4") and we use LDH to supply engines or master streams (no more duel 2 1/2"s}. We do not pump more than 200 PSI through the LDH. Because of this I have started leaving my engine in the volume position. I just like the idea of having maximum flow capacity immediately available without having to worry about switching over. Is my thinking flawed or does anyone else do this?
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Mike Gentili, Capt.
New Bedford Fire Dept.
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Mike Gentili, Capt.
New Bedford Fire Dept.
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