Recent Blogs
Disc Valve for Large Gas Pipes: How It Works, Parts, Diagram & Sizing Explained
Disc valves shut off and throttle large gas pipelines using a rotating disc. Learn sizing, Cv, torque, and failure modes for transmission and utility service.
Throttle Valve Mechanism Explained: How It Works, Parts, Diagram, and Cv Flow Formula
How a Throttle Valve regulates fluid flow in engines, hydraulics, and HVAC — working principle, sizing formula, worked example, and failure modes from FIRGELLI.
Pinch Valve Mechanism Explained: How It Works, Parts, Diagram, Uses & Sleeve Sizing Formula
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 Mechanism Explained: How It Works, Parts, Diagram & Sizing Calculator
Gate Valve explained — how the wedge seals, where it beats ball and globe valves, sizing math, and named applications across pipelines, refineries, and water...
Diaphragm Valve Mechanism Explained: How It Works, Parts, Cv Sizing Formula and Animated Diagram
How a Diaphragm Valve works, with sizing math, real applications in pharma and water treatment, and troubleshooting tips from FIRGELLI's engineering team.
Butterfly Valve Mechanism: How It Works, Parts, Torque Formula, and Industrial Uses Explained
Butterfly valve explained — disc geometry, torque calculation, seat selection and sizing for water, HVAC, oil & gas, and process pipelines.
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.