A Guide to Linear Valves – Types, Manufacturers & Applications
What Are Linear Valves?
Linear valves are industrial flow control devices that regulate fluid movement by lifting or lowering a closure element in a straight line.
Unlike rotary valves (such as ball or butterfly valves), linear valves operate through linear motion, offering fine control and precise modulation. Their design is especially well-suited for throttling applications where flow accuracy and reliability are critical.
Whether managing steam, gas, or corrosive media, linear valves play an essential role in industries such as oil & gas, power generation, chemical processing, and HVAC systems.
Types of Linear Valves
Several types of linear valves are used across various applications, each offering unique flow characteristics and advantages:
Gate Valves
Gate valves are designed for fully open or fully closed service. A wedge-shaped gate moves vertically between two seats to isolate flow. These valves are ideal for straight-line flow with minimal pressure drop and are widely used in pipeline isolation.
Globe Valves
Globe valves use a disc that moves against the flow to regulate or shut off fluid. They offer superior throttling capabilities compared to gate valves and are frequently used in steam applications where pressure and flow control are essential.
Diaphragm Valves
Diaphragm valves employ a flexible diaphragm that presses down against a weir or seat to control flow. These are commonly found in hygienic or corrosive environments such as pharmaceutical or food processing lines.
Needle Valves
Needle valves use a slender, tapered point to precisely control small flow rates. Ideal for instrumentation and fine dosing applications, they are often found in laboratory or analytical setups.
Pinch Valves
Pinch valves operate by pinching a rubber tube to control flow. These are effective for slurry, powder, and abrasive media where contamination must be avoided.
Each of these linear valve types offers unique benefits for flow control, sealing integrity, and maintenance efficiency—making it important to choose the right design based on the media and operating conditions.
Top Manufacturers of Linear Valves
When it comes to linear valve manufacturers, two brands stand out for their engineering excellence, product reliability, and global recognition:
Samson Controls is a leading manufacturer of control valves, known for their high-performance linear actuated solutions. The Samson Type 3241 and Type 3251 globe valves are engineered for demanding flow control applications involving steam, liquids, and gases. Their modular design, tight shut-off, and exceptional rangeability make them a trusted choice across chemical, oil & gas, and power sectors.
Samson's valves are often paired with smart positioners and accessories to enhance process efficiency and ensure long-term durability. Their dedication to quality and innovation makes them a global leader in the linear valve market.
ARI Armaturen specialises in German-engineered industrial valves, offering a broad range of globe, gate, and diaphragm valves for steam, thermal oil, and aggressive fluids. Their ARI-FABA Globe Valve series is known for its robust design and ability to operate in high-pressure, high-temperature environments.
With over 70 years of experience, ARI Armaturen’s linear valves are trusted by boiler manufacturers, energy providers, and process plants. They offer tailored valve solutions that meet international standards such as DIN, ANSI, and ISO.
Why Choose Linear Valves?
Here are a few reasons why linear valves are the preferred solution in critical flow control applications:
Excellent throttling performance
Precise flow regulation and minimal leakage
Suited for high-pressure and high-temperature environments
Widely compatible with actuators and positioners
Options for manual, pneumatic, or electric operation
Conclusion
Whether you're working with steam distribution, chemical dosing, or critical process control, linear valves provide unmatched reliability and control. From gate valves for isolation to globe valves for modulation, these valve types form the backbone of many industrial systems.
Top manufacturers like Samson Controls and ARI Armaturen continue to drive innovation in the linear valve space—offering robust, precise, and long-lasting solutions for every sector.
Looking for linear valves for your project? Explore our full range or get in touch for expert advice on selecting the right valve for your application.
