Powell Valves is an industrial gate valve manufacturer and supplier in various materials such as: bronze, iron, stainless steel and cast steel. Powell Valves features high pressure Gate Valves in two different forms, parallel and wedge-shaped. Parallel Gate Valves are used to control the flow pressure while Wedge Gate Valves are most commonly used and allow for fluids to be tightly shut off. Our gate valves are industry approved for a wide range of industries, from oil & gas to pulp & paper. View Powell Valve's selection of different Gate Valves below or contact us for more information.
How does a gate valve work?
Gate valves are designed to turn the flow of a liquid on or off by restricting or opening the flow with a round or rectangular wedge. Gate Valves can also control the pressure of liquid flow through pipes or valves.
As an experienced gate valve supplier we can provide custom size possibilities. If you require custom sizes, please request a quote.
Why Powell as Your Gate Valve Supplier
Powell has manufactured valves in Cincinnati since 1846. Every gate valve we produce is built in our own facilities and backed by an ISO 9001-certified quality management system. As a gate valve supplier with over 170 years of production history, we have the engineering depth to support both standard and custom requirements. That vertical integration gives us control over material sourcing, machining tolerances, and delivery timelines that sourcing through a trading company cannot match.
We supply gate valves to petrochemical, refining, power generation, pulp and paper, industrial gas, and mechanical construction operations across the U.S. and globally. Whether you need a single replacement valve or volume supply for a capital project, request a quote to get started.
Gate Valves by Material
The right material depends on the media, operating temperature, and corrosion exposure in your system. Powell supplies industrial gate valves in the following:
- Bronze gate valves for water, steam, oil, and marine applications in ASME Class 125 through 300
- Iron gate valves for general-purpose service including HVAC, fire protection, and water distribution in ASME Class 125 through 250
- API 600 cast steel gate valves for high-pressure and high-temperature service in ASME Class 150 through 1500
- API 602 forged steel gate valves for compact, high-integrity piping in ASME Class 150 through 2680
- API 603 corrosion resistant gate valves for chemical processing and corrosive media in ASME Class 150 through 600
- Pressure seal gate valves for applications above Class 600 where bolted bonnet designs are impractical
- Stainless steel cryogenic gate valves and bronze cryogenic gate valves for low-temperature service.
This range of industrial gate valves covers ASME pressure classes from 125 through 2680 and sizes from 1/4" to 42". Working with a single gate valve supplier for this full range simplifies procurement, standardizes documentation, and reduces lead times across a project. View our certificates for full documentation.
Gate Valves FAQs
A gate valve is a linear-motion valve that uses a flat or wedge-shaped gate to start or stop flow in a pipeline. Unlike globe valves, gate valves are designed for full-open or full-closed isolation rather than throttling, providing minimal pressure drop and straight-through flow when fully open.
Choose a wedge gate valve for general on/off isolation service, where its tapered disc creates a reliable seal. Choose a parallel slide gate valve for steam or high-temperature applications with frequent thermal cycling, since its spring-loaded flat discs resist the seat damage that wedge designs can experience under those conditions.
Gate valves use a straight-through design best suited for full on/off isolation, offering minimal pressure drop when open. Globe valves use an S-shaped flow path that creates more resistance but allows precise throttling. If you need to fully stop or start flow, a gate valve is typically the better fit.
Gate valve sizing and pressure ratings depend on the application's piping diameter, operating pressure, and temperature. Industrial gate valves are commonly available from small bore sizes up through large-diameter piping, across a wide span of ASME pressure classes. Confirming your system's specific pressure and temperature conditions ensures the correct class is specified.
Yes. When a standard catalog valve doesn't meet project-specific requirements, manufacturers with in-house modification capabilities can adapt a standard gate valve rather than requiring a full custom build. This typically shortens lead time compared to designing a valve from scratch, since it starts from a proven base design and configuration.