Recent Blogs
Butterfly Throttle Valve: Projected Opening Geometry
Calculate ideal thin-disc projected opening area and its change with angle. An entered area multiplier provides a comparison value, not valve flow or sizing.
Pneumatic Pinch Valve: Nameplate Differential Pressure Check
Pinch valves seal fluid by squeezing a flexible elastomer sleeve. Learn how they work, where mining and pharma teams use them, and how to size...
Gate Valve: Travel and Projected Opening Calculator | FIRGELLI
Explore ideal gate-valve travel and the circular bore area uncovered by a straight gate. Calculate effective lead, travel, projected opening and turns left.
Diaphragm Valve Mechanism Explained: How It Works, Parts, Cv Sizing Formula and Animated Diagram
See how a weir-type diaphragm valve opens and seals. Calculate the Cv and Kv needed for a liquid duty, with a separate lift-position preview.
Rotary Valve Mechanism: How It Works, Parts, Diagram, Formula, and Industrial Uses Explained
Rotary Valve explained — how the spinning port directs flow, sizing math, and real applications in 2-stroke engines, pneumatics, and pharma powder dosing.