Tray Hydraulics Calculation
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What is the difference between VAVLE (V1) and VAVLE (V4) in the RATING setting of tray hydraulic calculation?
Hahaha they are both float valves, just different types.
VALVE(V1): GLITSCH type V1 valve trays (Flat orifice) The opening is flat. VALVE(V4): GLITSCH type V4 valve trays (Extruded orifice) The opening protrudes downward. Let me give you a picture.
The V1 type valve leg has a short pressure drop and the V4 type valve leg has a long pressure drop. The pressure drop between the two can be about double, but there is not much difference in other aspects.
The V1 type that aspen talks about is what we call the F1 type.