| Globe Valve |
A linear-motion valve uses a plug or disc that moves toward or away from a stationary seat inside a contoured body. |
The plug position changes the effective flow area through the seat, allowing precise regulation of fluid flow. |
Linear or equal-percentage trims are commonly selected according to process requirements. |
High control accuracy, wide trim selection, good shutoff capability, and suitability for demanding pressure and temperature service. |
Higher pressure loss, larger size and weight, and generally higher purchase and maintenance cost than rotary valves. |
Steam, boiler feedwater, cooling water, chemical dosing, refinery processes, and general industrial process control. |
Excellent |
Projects prioritizing accurate modulation, stable control, and broad service flexibility over compactness. |
| Ball Valve |
A quarter-turn rotary valve uses a spherical closure element with a drilled passage. |
Rotating the ball changes the alignment between the bore and the pipeline; characterized V-port or segmented-ball designs improve throttling. |
V-port and segmented-ball designs can provide approximately equal-percentage control; standard full-port balls are mainly isolation devices. |
Compact construction, low pressure loss, fast actuation, tight shutoff, and good resistance to many corrosive or dirty fluids when properly specified. |
Standard full-port designs may provide poor low-flow control; seats can be damaged by severe cavitation, flashing, or abrasive solids. |
Gas, hydrocarbon, water, slurry-compatible services, high-pressure process lines, and applications requiring tight shutoff. |
Very good with characterized trim |
Installations needing a compact rotary valve, low flow resistance, and reliable shutoff together with moderate-to-high control performance. |
| Butterfly Valve |
A quarter-turn valve uses a circular disc mounted on a shaft inside the pipeline. |
The disc rotates within the flow path, changing the open area and therefore the flow rate. |
Usually approximately equal-percentage in control configurations, depending on disc and seat geometry. |
Lightweight, compact face-to-face dimensions, economical at large diameters, and relatively easy to automate. |
Disc remains in the flow path, which can create pressure loss; very low-flow control and high-pressure shutoff may be less effective than with other designs. |
Large-diameter water, HVAC, air, gas, cooling systems, wastewater, and low-to-moderate pressure services. |
Good in suitable range |
Large pipelines where low weight, short installation length, and cost-effective automation are major priorities. |
| Diaphragm Valve |
A flexible diaphragm moves against a weir or straight-through body, isolating the actuator and valve mechanism from the process fluid. |
The diaphragm flexes to reduce or increase the flow passage. |
Generally suitable for modulating service when the valve and diaphragm geometry are correctly selected. |
Excellent fluid isolation, no exposed stem or packing in the process stream, and good suitability for corrosive, sanitary, or contaminated fluids. |
Diaphragm materials and pressure-temperature limits restrict service; diaphragms are wear components and may require periodic replacement. |
Chemical processing, pharmaceutical and food systems, ultrapure water, corrosive fluids, slurries, and sanitary applications. |
Good |
Processes where contamination prevention, leak minimization, or separation of the actuator from the medium is essential. |
| Plug Valve |
A quarter-turn rotary valve uses a cylindrical or tapered plug with one or more flow passages. |
Rotating the plug aligns or misaligns the passage with the pipeline; eccentric or characterized designs can improve control performance. |
Often approximately equal-percentage in specialized control versions; basic plug valves are commonly used for on-off service. |
Strong quarter-turn operation, compact flow path, and suitability for some dirty, viscous, or abrasive services with appropriate lining and materials. |
High operating torque can occur; lubrication, seal wear, and friction may be concerns depending on design and process conditions. |
Oil and gas, chemical service, wastewater, viscous fluids, and applications requiring a robust rotary closure element. |
Moderate to good |
Services requiring a rugged rotary valve and a flow path that can handle challenging media when properly engineered. |
| Pinch Valve |
A flexible elastomeric sleeve is compressed by an external mechanism to restrict or stop flow. |
Pinching the sleeve reduces its internal opening; the process fluid contacts mainly the sleeve rather than metal valve internals. |
Generally nonlinear; best control performance is achieved within the manufacturer’s recommended operating range. |
Excellent resistance to abrasive solids, suspended particles, and corrosive media; minimal dead space and low risk of clogging. |
Sleeve life depends on abrasion, temperature, chemical compatibility, and cycling frequency; precise control may be limited. |
Mining slurry, wastewater, bulk solids, abrasive mixtures, powders, and corrosive particulate service. |
Fair to good |
Processes dominated by abrasive or solids-laden media where protecting metal internals is more important than fine throttling accuracy. |
| Axial-Flow Valve |
A streamlined body uses an axial plug, sleeve, or piston that moves along the pipeline centerline. |
The internal element changes the annular flow area while keeping the flow path relatively straight. |
Can be engineered for linear or equal-percentage response with suitable trim. |
Low noise potential, reduced turbulence, compact installation in certain layouts, and good performance in high-capacity gas or liquid service. |
Specialized construction, higher engineering requirements, and potentially higher procurement cost and maintenance complexity. |
Natural gas transmission, compressor stations, high-capacity pipelines, pressure-reduction systems, and severe-service applications. |
Excellent |
Large-capacity systems requiring efficient flow handling, controlled pressure reduction, or reduced turbulence in a streamlined passage. |
| Three-Way Control Valve |
A multi-port globe or rotary body combines one common port with two branch ports. |
The closure element divides flow between two outlets or mixes two inlet streams, depending on the body configuration. |
Commonly selected for mixing or diverting control; the actual characteristic depends on port arrangement and trim. |
Combines flow routing and regulation in one valve, reducing the need for separate piping components in some systems. |
More complex flow interaction, potential cross-flow issues, and less suitability for simple isolation compared with two-way valves. |
Heating and cooling loops, heat exchangers, temperature control, bypass systems, and process mixing or diversion. |
Good |
Systems requiring controlled mixing, diverting, bypassing, or temperature regulation within a compact valve arrangement. |
| Angle Valve |
A globe-style body changes the flow direction by approximately 90 degrees between inlet and outlet. |
A linear-moving plug regulates the opening through the seat while the angled body manages the piping layout. |
Linear or equal-percentage characteristics are available depending on trim selection. |
Useful for flashing, cavitation-prone, erosive, or high-pressure-drop service; can simplify piping and reduce the need for an elbow. |
May require careful orientation and support; pressure loss and body stresses must be evaluated for severe service. |
High-pressure liquid service, steam, boiler systems, flashing applications, and installations requiring an integrated directional change. |
Excellent |
High-energy process lines where pressure-drop management, erosion resistance, or a 90-degree piping configuration is needed. |