Valve Types

What Is a High-Pressure Valve? A high-pressure valve is a valve engineered to safely control, isolate, or regulate fluids operating at elevated pressure levels, typically at ASME Class 600 and above, where standard industrial valve construction would be inadequate to contain the internal stress without deformation, fatigue, or sealing failure. It features reinforced body construction […]

What Is a Cryogenic Valve? A cryogenic valve is a valve specifically engineered to operate at extremely low temperatures, typically below −40°C and often down to −196°C for liquefied gas service. It incorporates extended bonnets, low-temperature-qualified materials, and specialized sealing systems to maintain structural integrity, sealing performance, and operational reliability under conditions that would cause

Swing vs Lift Check Valve: What Is the Difference? Swing and lift check valves are automatic non-return valves that differ in disc movement mechanism, internal flow path, and resulting performance characteristics. A swing check valve uses a hinged disc that swings open in an arc with forward flow and closes by gravity and reverse pressure.

Rising vs Non-Rising Stem: What Is the Difference? Rising and non-rising stems are two valve stem configurations that differ in external motion, thread location, and installation space requirement. A rising stem moves axially upward as the valve opens, with externally threaded stem and yoke nut providing visible position indication. A non-rising stem rotates in place

Full Port vs Reduced Port Valve: What Is the Difference? Full port and reduced port valves differ in the diameter of the internal bore through the closure element relative to the connected pipeline inside diameter. A full port valve has a bore equal to the pipe’s inside diameter, minimizing pressure drop and allowing pipeline pigging

Lug vs Wafer Butterfly Valve: What Are the Key Differences? Lug and wafer butterfly valves differ primarily in body design and installation method. A wafer butterfly valve is clamped between two pipe flanges using through-bolts that span both flanges, while a lug butterfly valve features threaded inserts around its body perimeter that allow each flange

What Is a Floating Ball Valve? A floating ball valve is a quarter-turn rotary valve in which the ball is not mechanically anchored by trunnion shafts but is held in position by two seat rings and the upper stem connection. Line pressure acting on the upstream ball face forces the ball slightly downstream against the

What Is a Trunnion Mounted Ball Valve? A trunnion mounted ball valve is a quarter-turn rotary valve in which the ball is mechanically anchored by upper and lower trunnion shafts to reduce operating torque and distribute pressure loads across the valve structure. It is designed for high-pressure and large-diameter applications where floating ball designs would

“`html Check vs Globe Valve: What Are the Key Differences? Check valves and globe valves differ fundamentally in function and actuation. A check valve automatically permits flow in one direction and prevents reverse flow without any external control input. A globe valve is a manually or power-actuated valve designed to regulate or stop flow using

Butterfly vs Ball Valve: What Are the Key Differences? Butterfly valves and ball valves are both quarter-turn rotary valves, but they differ fundamentally in closure element geometry and resulting performance characteristics. A butterfly valve uses a rotating disc that remains in the flow path at all positions, while a ball valve uses a spherical element