Valve

Globe valves and gate valves are two of the most common valve types used in industrial applications. While they may appear similar in some contexts, their internal structures, functions, and application scenarios are significantly different. This article outlines their differences in detail from multiple dimensions to help engineers and users make informed choices. 1. Operating […]

1. Risks and Principles of Small Opening Operation Control valves operating at small openings often encounter critical issues due to dramatic changes in internal fluid dynamics. Key problems include: 1.1 Severe Throttling Erosion When the valve throttling gap is extremely narrow, fluid velocity surges. This high-speed flow erodes the plug and seat surfaces intensely—particularly in

In industrial pipeline systems—especially within chemical plants—selecting the right type of valve is critical to ensuring process safety, efficiency, and maintainability. Among the most commonly used are gate valves and globe valves, each with distinct structural features, sealing mechanisms, and application scenarios. This article provides an in-depth comparison to assist engineers, procurement professionals, and operators

1. Introduction: What is Control Valve Preventive Maintenance? Control valve preventive maintenance (PM) refers to the systematic and scheduled servicing of control valves to prevent failures, ensure reliability, and maintain optimal performance. It involves inspecting, cleaning, lubricating, calibrating, and testing all critical components of the valve assembly on a routine basis. 2. Key Benefits of

Solenoid valves are widely used in automation systems to control the flow of fluids or gases. Over time or during troubleshooting, it becomes necessary to test whether a solenoid valve is working correctly. This article outlines key components, step-by-step inspection methods, and safety tips for accurately diagnosing solenoid valve performance. 1. Main Components to Inspect

Introduction Shut-off valves serve as the final control element in Safety Instrumented Systems (SIS), playing a vital role in ensuring process safety. Due to their direct role in executing safety actions, shut-off valves are also among the most failure-prone components within the SIS safety loop. Depending on their structure and actuation mechanism, shut-off valves respond

Introduction Valves are essential components in chemical process systems, responsible for regulating the flow of gases, liquids, or slurries. The selection and placement of valves significantly impact plant safety, operational efficiency, equipment reliability, and maintenance costs. This guide outlines comprehensive principles for selecting and installing valves in chemical plants, with detailed consideration of fluid properties,

In chemical plants, choosing between pneumatic and electric valves depends greatly on specific operational requirements and conditions. Each valve type offers distinct advantages suited to various industrial scenarios. This article explores why chemical plants utilize both pneumatic and electric valves rather than relying solely on pneumatic valves. 1. Safety and Explosion-proof Requirements Pneumatic Valves: Pneumatic

Control valves play a critical role in petrochemical plant design, directly impacting operational efficiency, safety, and cost. Selecting the right type of valve—whether pneumatic, electric, or electro-hydraulic—can be challenging due to varying application requirements. This article provides an in-depth analysis of these three types of valves, discussing their working principles, advantages, disadvantages, and suitable use

The Positive Crankcase Ventilation (PCV) valve is a small yet crucial component in an automobile’s engine. It plays a vital role in maintaining engine performance, controlling emissions, and ensuring proper ventilation of the crankcase. Let’s delve into its purpose, working principles, location, common issues, and maintenance requirements. Understanding the Purpose of the PCV Valve During