Blog- Wenzhou Yixin Valve Co., Ltd.

Email For Us

yixin@yixin-valve.cn

Call For Us

Call : +86-15067890985

Get A Quote

Blog

Blog Aug 18, 2025

API 602 Valve Size Reference and Dimensions Guide

API 602 Valve Size Reference and Dimensions Guide Introduction API 602 is the international standard for compact forged steel gate, globe, and check valves , commonly used in oil & gas pipelines, chemical plants, and high-pressure appli ...

Blog Aug 17, 2025

Valve Appearance Inspection Standards

Valve Appearance Inspection Standards 1. Introduction Before delivery or installation, industrial valves must undergo appearance inspection to ensure that they are free from visible defects, contamination, or damages that could affect per ...

Blog Aug 17, 2025

What to Do If a Check Valve Leaks in Reverse (Practical Guide)

What to Do If a Check Valve Leaks in Reverse (Practical Guide) 1. The Function of a Check Valve A check valve (also called a non-return valve or one-way valve) is designed to prevent reverse flow in a piping system. It is widely used at ...

Blog Aug 15, 2025

Butterfly Valve Selection and Installation Process for Chemical Plants

Butterfly Valve Selection and Installation Process for Chemical Plants Introduction In chemical processing plants, butterfly valves are widely used for regulating and isolating fluid flow due to their compact design, quick operation, and co ...

Blog Aug 14, 2025

5 Common Causes of Gate Valve Leakage and How to Fix Them

5 Common Causes of Gate Valve Leakage and How to Fix Them Introduction In industrial and pipeline systems, gate valves are widely used for isolating flow. However, even the most robust valves can experience leakage over time. Understanding ...

<< <

> >>

A total of 14pages, with68 articles

Blog

Double Block And Bleed Valve

Double Block and Bleed Valve (DBB Valve) – Comprehensive Overview A Double Block and Bleed Valve is a specialized isolation valve designed to provide two independent sealing barriers and an intermediate cavity bleed within a single, compact assembly. This configuration allows operators to isolate a section of the pipeline, drain the trapped medium between the seals, and verify zero leakage before performing maintenance or testing. By combining these functions into one body, DBB valves minimize space usage, reduce weight, and lower potential leak points compared to conventional multi-valve setups. Typical Operating Conditions DBB valves are widely used in critical process environments where safety, leak prevention, and operational efficiency are paramount: Oil & Gas Pipelines – Ensuring secure isolation during pigging operations, meter calibration, and section maintenance. Offshore Platforms – Handling high pressures, corrosive seawater exposure, and limited installation space. Petrochemical Plants – Isolating hazardous fluids in refining, cracking, and distillation units. Power Generati ...

Trunnion Ball Valve

A forged steel trunnion mounted ball valve is a heavy-duty valve designed for reliable shutoff and control in high-pressure, high-temperature, and demanding process conditions. Unlike floating ball designs, the ball in a trunnion-mounted configuration is supported at both the top and bottom, reducing operating torque and minimizing seat wear. The use of forged steel enhances mechanical strength, structural integrity, and resistance to pressure-induced deformation, making these valves ideal for critical applications in the oil & gas, petrochemical, power generation, and industrial sectors. Typical Operating Conditions Forged steel trunnion mounted ball valves are commonly used in: High-Pressure Pipelines – Transporting crude oil, natural gas, refined products, and chemical fluids. Offshore and Subsea Systems – Handling extreme pressure, corrosive seawater exposure, and space-limited environments. Refineries and Petrochemical Plants – Isolating and controlling process fluids in hydrocracking, reforming, and catalytic units. Power Plants – Managing high-temperature steam and cooling water systems. ...

Pigging Valves

Pigging Valves – Comprehensive Overview Overview A Pigging Valve is an integrated device combining the functions of a pig launcher/receiver and a valve. It is widely used in crude oil, refined products, natural gas, and chemical pipeline systems for pipeline cleaning, internal inspection, and maintenance without dismantling the pipeline. Compared to traditional pig launchers and receivers, pigging valves are compact, space-saving, and allow fast pig launching or receiving, improving operational safety and efficiency. Key functions: Launching or receiving pipeline pigs Removing deposits such as wax, scale, or rust from pipeline interiors Supporting in-line inspection pigs for pipeline integrity assessment Reducing operational footprint and installation cost Working Principle The pigging valve has a specially designed internal chamber and switching mechanism. When open, the valve aligns the pig chamber with the pipeline bore, allowing the pig to enter or exit the line. When closed, the chamber is isolated from the pipeline, enabling safe loading or removal of the pig. ...

Cryogenic Ball Valve

Cryogenic Ball Valve – Comprehensive Overview A cryogenic ball valve is a specialized isolation valve designed to operate at extremely low temperatures, typically ranging from -196°C (-321°F) up to ambient temperature . These valves are engineered to handle liquefied gases such as LNG, liquid nitrogen, liquid oxygen, liquid hydrogen, and other cryogenic fluids, ensuring safe and reliable shutoff while preventing leakage during storage, transfer, and processing. Unlike standard ball valves, cryogenic designs incorporate extended stems to keep the stem packing away from the cold zone, reducing heat transfer and preventing seal damage from thermal contraction. Special seat and body materials are selected to maintain toughness, sealing integrity, and dimensional stability under cryogenic conditions. Typical Operating Conditions Cryogenic ball valves are widely used in: LNG Terminals and Storage Tanks – Isolating pipelines and transfer lines for liquefied natural gas. Air Separation Units – Controlling the flow of liquid oxygen, nitrogen, and argon. Hydrogen Production and Storage – Managing liquid hydrogen in energy and aeros ...

API Standard Flanged Globe Valve

API Standard Flanged Globe Valve – Comprehensive Overview An API standard flanged globe valve is a crucial component in fluid control systems, designed to provide precise throttling and reliable shutoff in various industrial applications. Manufactured to meet API (American Petroleum Institute) standards , these valves ensure consistent quality, durability, and performance, particularly in oil & gas, petrochemical, power generation, and water treatment industries. Construction and Material Flanged End Connections : Designed according to ASME B16.5 standards, the flanged ends facilitate secure, leak-proof connections to piping systems, enabling easy installation and maintenance. Robust Body Materials : Typically constructed from cast steel (WCB, WCC), stainless steel, or alloy steels, offering excellent mechanical strength and corrosion resistance across a range of service conditions. Trim Components : Equipped with durable seating surfaces, often stainless steel or hardened alloys, to ensure tight shutoff and long service life. Bonnet Types : Bolted bonnet or pressure-seal bonnet options are available depending on pres ...

We Provide Best Services
Agent

Email For Us

Call For Us

API 602 Valve Size Reference and Dimensions Guide

Valve Appearance Inspection Standards

What to Do If a Check Valve Leaks in Reverse (Practical Guide)

Butterfly Valve Selection and Installation Process for Chemical Plants

5 Common Causes of Gate Valve Leakage and How to Fix Them

Categories

Hot products

Double Block And Bleed Valve

Trunnion Ball Valve

Pigging Valves

Cryogenic Ball Valve

API Standard Flanged Globe Valve

New Products

Follow Us

Useful Link

Products

Newsletter

Contact Us