ANSI / ASME Flange Pressure Ratings: Class 150 to 2500
ANSI/ASME B16.5 and B16.47 standards define standardized pressure–temperature limits for flanged piping systems. Each pressure class corresponds to a specific rating that varies based on material group and operating temperature. This article explains these ratings, ranging from Class 150 through Class 2500, outlines the critical differences between B16.5 and B16.47, and provides reference tables based […]
The Standard Types of ANSI/ASME Flanges
ANSI/ASME flanges are the primary connection components which are used in industrial piping systems across oil & gas, petrochemical, power generation, water treatment, and mechanical/HVAC applications.ANSI/ASME B16.5 covers NPS ½” to 24” in pressure classes 150 to 2500. Flange types include: Threaded, Slip-on, Lapped, Blind, and Weld Neck flanges (≤24”).ANSI/ASME B16.47 covers Sizes 26″ to […]
How Do ANSI/ASME Flanges Work?
ANSI/ASME flanges are built specifically for high-pressure piping systems, as they can maintain a reliable seal under demanding conditions. They work by compressing a gasket between two machined flange faces using bolts. This creates a controlled, leak-proof seal that is capable of withstanding internal pressure, temperature changes, vibration, and mechanical loads. This article explains in […]
Slip-On vs Weld Neck Flanges: Pros and Cons
Slip on and weld neck flanges represent two distinct approaches in piping connections, each with specific advantages and trade offs. This guide reviews the pros and cons of slip on and weld neck flanges, explaining how they differ and when each is best suited for specific applications. Overview of Slip-On Flanges Slip-on flanges are designed […]
Understanding ANSI/ASME B16.5 and B16.47 Standards
The American National Standard Institute (ANSI) Sectional Committee B16 has been defining publishing safety and dimensional standards for piping systems since 1922. Sectional Committee B16 was reorganized as an ASME (American Society of Mechanical Engineers) standards committee in 1982 with the first publication of the standards under the ASME/ANSI designation in 1988. Today, these standards […]
Slip-On vs Blind Flanges: What’s the Difference?
Slip on flanges and blind flanges, two of the most common options, serve very different roles within the same piping system. Slip-on flanges provide cost effective connection points for pipes and equipment, while blind flanges ensure a secure closure at the end of a piping line. In this article we explain the basics of each […]
What Are ANSI/ASME Flanges?
ASME/ANSI flanges are standardized components used to connect pipes, valves, pumps, pressure vessels, and other equipment in industrial piping systems. The modern standards governing these flanges are published by the American Society of Mechanical Engineers (ASME). People often call these flanges ‘ANSI flanges,’ but the official design and dimensional requirements fall under ASME, specifically the […]
Advantages of Slip-On Flanges in Piping Projects
In piping projects, slip-on flanges offer several key benefits: lower cost, easier installation, standardized pressure ratings, and the ability to handle large-diameter lines with minimal preparation. They are recognized in standards such as ASME & AWWA, and are available in a wide range of sizes and materials. The advantages of slip-on flanges are summarized below. 1. […]
Slip-On Flanges in Industrial Applications
Slip-on flanges are a practical choice across many industrial settings, valued for their cost-effectiveness, ease of installation, and reliable performance under moderate conditions. Even though they are not designed for the highest pressure or most demanding service lines, they still provide a dependable solution for utility piping, water treatment, HVAC, and other industrial process systems. […]
Guide to Flanges
In this introduction to flanges, we’ll cover what flanges are, how they’re made, and the different ways they connect piping systems. The article also provides an overview of pressure and temperature ratings, material options, and industry standards that guide proper selection and ensure reliable performance of flanges. What Are Flanges and How Do They Work? […]