Resources

Valves are critical components in the chemical industry as they perform several functions. This article reviews common valves in the chemical industry, material compatibility considerations, and how chemical injection valves work.

An emergency shutdown valve, frequently referred to as a safety shutdown valve, quickly halts fluid flow in an emergency or potentially hazardous situation. In this article, we review the working principles of the shutdown valve, closing time, and types.

Actuators perform important functions in valves, especially control valves. Common operations performed include fully opening, fully closing, and providing precise control for flow regulation. In this article, we review the operations of a direct acting and a reverse acting actuator and compare the two.

Globe valves are one of the most common valves in every industry because of their ability to start, stop, and throttle fluid flow. In this article, we review what dictates flow direction, the flow characteristics of a globe valve, and its CV values.

Automated valves do not require manual efforts for their operation. Rather, they possess an actuator and control system that automatically performs the opening, closing, and regulation of the valve. Benefits of this system include increase in efficiency and operator safety. In this article, we review how automated valves work, as well as the functioning of automated gate, globe, and butterfly valves.

Stainless steel valves are one of the most common types because they offer great durability at a relatively low cost. In this article, you will learn more about stainless steel valves and compare them vs other valve materials.

A check valve is common in control applications to ensure that the flow of liquid or gas is in only one direction. This article discusses the functions of a check valve in industry, its application in various types of systems, and functionality vs a non-return valve.

WCB in valve means Weldable Cast Steel with a B grading. In this article, we discuss the meaning of WCB designation, review WCB material specifications, and compare WCB vs. WCC.

RPTFE stands for Reinforced Polytetrafluoroethylene and provides a common valve seat coating material. This is largely because it has several desirable attributes that ensure the long-term integrity of the seat. In this article, we review RPTFE seat use, its temperature range, and compare RPTFE vs PTFE.

The CV of valves refers to their flow coefficient and provides one of the important parameters when selecting a valve for an application. Moreover, its value quantifies a valve’s ability to pass flow. In this article, you will learn more about CV, how to calculate it, and review a CV valve chart.