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Could You Throttle with Butterfly Valves? A Primer on Choosing Valves
2026-04-29
The end-user, industry and application will dictate whether an on/off or throttling service is suitable for project butterfly valves, and whetherbutterfly valvescan be used on throttle is an unanswered question – if you can have more context for your application, that would be a help. Although the butterfly valve is a more compact and economical shape to regulate flow, there are several other types of doors that are suited for very accurate flow control or for use in harsh atmospheres. That gets us to a group of valves that are commonly recommended are not for throttling, but for isolation: gate valves, as well as their complementary counterpart in check valves, which perform different roles in pipeline systems.
The Gate Valve: Isolation Specialist
It’s for full open or full close service. The gate valve is designed for isolation, not throttling. The gate valve was designed to be fully open or fully closed. Unlike butterfly valves, gate valves are mostly used for full open or full close services, not for throttling. Regulating flow with a gate valve is detrimental due to the vibration, cavitation and accelerated wear of the disc and seats. Non Rising Stem Resilient Seat SWING Gate Valve and Bolted Ductile Iron Non-Rising Stem Resilient Seat Swing Gate Valve threaded end are types.
These valves have an elastomer-lined wedge (i.e. the resilient seat) which forms the seal against leakage. The "non-rising stem" design is great for applications where vertical space is limited, the stem moves in and out of the valve body threads into the gate without rising out of the valve body). Widely used in water solutions, the Flanged Gate Valve and the Double Flanged Gate Valve are with strong, bolted ends for secure pipeline connection. The typical example is the Double flanged non-rising stem Resilient Gate Valve, which stands as the ideal combination of flanged ends, a short stem design, and a bubble-tight seal, and hence making it a staple in water systems. Particularly, the Flanged End Water Supply Gate Valve is for high durability and reliability of main supply line and branch line isolations and required minimum pressure drop in full open.
Companion Valves: Check Valves and Air Valves
In such systems, the check valve is critical to ensure that no backflow occurs. They are self-acting, they permit flow only in one direction. The Dual Plate Wafer Check Valve is an economical space-conscious, lightweight Thru Way option between flanges. It features dual spring-loaded plates that close rapidly to prevent water-hammer.
For high performance service, the Dual Plate Wafer Check Valve is available with flanged connections on each side for bolting directly into the line, also known as the Wafer Flanged configuration. The Light Weight Dual Plate Wafer Check Valve is the preferred choice for large diameter lines where weight and cost are predominant concerns ensuring a dependable solution for back flow prevention without the mass of conventional swing check valves.
So are these types of valves used for throttling? Absolutely they can be especially for light to moderate throttling loads. For full unrestricted flow or tight shutoff, the Non-Rising Resilient Seat Gate Valve or the Double Flanged Gate Valve provides better service. To prevent reverse flow in a system, the Dual Plate Wafer Check Valve and the flanged type have significant roles to play. "Knowing what each valve is used for — isolation, throttling or backflow prevention — is fundamental to creating an efficient, safe and long-lasting piping system." The right valve choice guarantees system, long life, and performance.