Compare the functions and applications in this category, then use the catalogue filters to narrow your requirement. Each topic includes detailed selection information and an enquiry form.
Ball, gate and plug valves control isolation by moving a closure element across the flow path. Their internal geometry, seat design and operating mechanism affect flow resistance, sealing and suitability for the process medium.
Pipeline isolation, process-unit boundaries and equipment connections use these valve families. The intended isolation duty and operating conditions determine the appropriate construction.
Globe valves regulate flow through movement of a plug relative to a seat. Control valves combine a selected valve body and trim with an actuator and control accessories to regulate a process variable.
Pressure, flow, temperature and level control loops use control valves. Multiple operating cases are needed to assess both normal regulation and limiting conditions.
Butterfly valves use a rotating disc for flow control or isolation. Check valves respond to flow and pressure conditions to reduce reverse flow. These two valve families have distinct functions despite their common use in piping systems.
Utility-water networks, cooling systems and process lines use butterfly valves, while check valves often protect pumps and other equipment against reverse-flow conditions.
Safety and relief valves are pressure-protection devices selected to discharge fluid under defined relieving conditions. Their capacity and configuration depend on the protected system and the approved relief design basis.
Pressure vessels, process equipment and utility systems may require these devices. The fluid phase and credible relieving scenarios determine the required protection duty.
Actuators convert electrical, pneumatic or hydraulic energy into valve movement. Positioners regulate the actuator response to a control signal, helping the valve achieve the commanded position within its mechanical and control arrangement.
Automated isolation and modulating control valves use these components. Replacement work needs compatibility with the installed valve, mounting and control system.
Needle valves provide small-bore flow adjustment or isolation using a tapered stem and seat. Instrument manifolds combine multiple valve functions in a compact assembly for connecting, isolating or equalizing measurement instruments.
Pressure transmitters, gauges and instrument tubing systems commonly use these components. Connection arrangements must match both the instrument and the process installation.
Diaphragm valves use a flexible membrane as the closure element, while pinch valves compress a flexible sleeve. The flexible material separates or limits contact between the process fluid and other operating components.
Compatible corrosive liquids, slurries and certain utility services use these designs. Solids, temperature and chemical exposure are important to the life of the flexible element.
Rupture discs, also called bursting discs, are non-reclosing pressure-relief elements installed in matched holders. Their specified burst behavior forms part of the pressure-protection design for the connected equipment.
Vessels and process systems may use rupture discs alone or in an engineered arrangement with other relief devices. The system design determines the application.
