QRC Valves

Resources

valve diagram with labels

Pressure Seal Valves – Working Principle, vs. Bolted, Gaskets

The design of pressure seal valves is specifically for high-pressure applications typically in excess of 1,000 psi and are therefore normally only available in pressure classes of 600# and above. These valves are unique because as their internal pressure increases, the body-bonnet joint seal improves. This is in complete contrast to other types of valves …

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series of valves covered in ice

Cryogenic Valves – Uses, Types, Standards, and Testing

Cryogenic valves can withstand and operate effectively at extremely cold temperatures. They serve in a variety of fields including the petrochemical and aerospace industry, where there is a need to handle fluids at such temperature levels. Although the definition of cryogenic temperature varies according to industry, it is common to see cryogenic valves operate between …

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Triple Offset Butterfly Valve – Benefits, Drawing, vs Other Offsets

Choosing the right type of butterfly valve is key to every application. The available range of butterfly valves from equipment manufacturers includes concentric, single (1x) offset, double (2x) offset, and triple (3x) offset butterfly valves. In this article, you will learn the benefits of a triple offset butterfly valve, see a sample drawing, and realize …

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Valve Corrosion – Causes, Allowance, & Prevention

Valves, typically composed of metal, serve as a conduit to a variety of fluids. As such, a valve frequently encounters corrosion. Material selection, corrosion allowance, operating condition, and impact of fluids must be considered in respect to corrosion. In this article, you will learn the causes of valve corrosion, the concept of corrosion allowance, and …

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blowdown valve diagram

Blowdown Valve – Working Principle, Types, Diagram, Applications

A blowdown valve’s main function is to control a continuous or intermittent flow of steam or fluid under high differential pressure. When installed in a system, they drain solid contaminants from the fluid. In this article, you will learn the working principle of a blowdown valve, review a blowdown valve diagram, and its use in …

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Valve Testing – Hydrostatic, Pneumatic, Shell, Seat, Fire…

The realization of safe and smooth operations of industrial processes is heavily reliant on valves performing their function with precision. Thus, valve testing ensures that these valves meet design specifications for the duration of their operational life. Generally, valve testing simulates operating conditions in a controlled environment to ensure fit for service valves. However, testing …

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Swing Check Valve – Diagram, Types, and Applications

A swing check valve allows forward flow and blocks the reverse flow. It provides a strong option for uni-directional homogenous flow applications. In this article, you will review a swing check valve diagram, operating principles, types, k-values, installation concerns, and applications. Swing Check Valve Diagram The swing check valve consists of a valve body, seat, …

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Valve Trim – What It Is, Plug Profiles, Parts, Chart, and Selection Process

Valve trim refers to the operating parts of a valve that are usually exposed to the process fluid. In this article, you will learn more about the meaning of valve trim, review a valve trim chart, learn about the material selection process, and review the selection process in action by comparing two common trims: trim …

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API Monograms

NEWS & RESOURCES SEPTEMBER 08, 2021 API Monograms API has a monogram program: API does monograms for API 600, API 602, and API 594.As of February 2019, API does NOT yet have a monogram for API 623 (globe valves).A list of manufacturing facilities that have the right to apply API monograms can be obtainedfrom: https://mycerts.api.org/Search/CompositeSearch As of …

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