luglugalugaaen |

seabsea

sea nav gua

Language: en spa ru fra it
sea

form

GET YOUR FREE QUOTE

We will contact you within 24 hours.

Choosing The Right Butterfly Valve

Time: 23-June 2025 | Source: I-FLOW| Share

What Is a Butterfly Valve, and Why Use It
A butterfly valve is a type of quarter-turn valve that uses a rotating disc to regulate flow. Unlike gate or globe valves, it takes up very little space and opens/closes quickly. It’s ideal for large-diameter systems, tight spaces, or where cost and efficiency matter.
You’ll find butterfly valves in everything from HVAC systems and chemical lines to marine and wastewater pipelines.
What Are the Main Types of Butterfly Valves
Concentric (Rubber-Lined): Best for general-purpose use like water, air, or HVAC systems.
Double Offset (High-Performance): Great for moderate pressure/temperature systems such as chemical or food processing.
Triple Offset: Built for high-pressure, high-temperature environments—used in oil, gas, or steam pipelines.
Still not sure? Think about pressure, temperature, and media. These three will help narrow your choices quickly.
Wafer VS Lug: Which Body Style Is Better?
Wafer Butterfly Valve: Slim, economical, and ideal if you're installing between two flanges. Good for systems where you don’t need to isolate one side.
Lug Butterfly Valve: Has threaded bolt holes for bolting directly to flanges—perfect for dead-end service or systems that need one-side disconnection.
If cost is a concern and you don’t need isolation, go wafer. If you're after versatility and better pipeline access, go lug.

What Material Should I Choose
Media TypeSuggested Material
Clean waterCast iron + EPDM seat
Corrosive fluidsStainless steel + PTFE
SeawaterBronze or Duplex Stainless
Steam or OilMetal-seated triple offset
The disc, body, and seat material should all match your working fluid.
Manual or Automated
Use a manual lever or gear operator for simple or small-size installations.
Choose electric or pneumatic actuators for automation, remote control, or integration into process control systems.
Actuated valves are more expensive, but they bring efficiency and safety to large systems or hazardous media.
Any Tips for Sizing the Valve
Consider the flow rate and pressure drop across the valve.
If the valve is for throttling (partially open), look into double offset or triple offset designs for better performance and reduced wear.
Oversized valves can lead to poor control. Undersized valves can restrict flow. Always ask your valve supplier to help with CV calculation if needed.

When Should I Use a Butterfly Valve
①You need a compact, lightweight valve.
②You want quick shut-off and low torque operation.
③You’re handling large volumes at moderate pressure.
④You’re working within a budget and need a cost-effective solution.
They’re not ideal for very high-pressure or tight throttling at low openings. In those cases, a globe valve or triple offset butterfly may serve you better.
Back To The List btn

Related News

What Is The High-Performance Butterfly Valves
19-August 2025

What Is The High-Performance Butterfly Valves

In every industrial plant, there are pieces of equipment that steal the spotlight—massive pumps, reactors, or turbines. But if you take a closer look, the true heroes are often smaller, quieter, and far less glamorous. One of those is the butterfly valve. And while the standard version has served industries for decades, the high-performance butterfly valve is rewriting the rules.

View Details
What Happens When Solenoid Valve Goes Bad
15-August 2025

What Happens When Solenoid Valve Goes Bad

Solenoid valves are small but essential components in many industrial, HVAC, irrigation, and fluid control systems. Acting as electrically controlled switches for liquids or gases, they provide fast, precise control with minimal manual intervention. However, like any mechanical and electrical part, solenoid valves can fail—and when they do, the system’s performance can quickly be affected.

View Details
What Is The Purpose of Duckbill Chcek Valve
13-August 2025

What Is The Purpose of Duckbill Chcek Valve

A duckbill valve is a one-way, non-return flow control device named for its shape, which resembles the beak of a duck. It is designed to allow fluid to flow freely in one direction while preventing reverse flow without the need for mechanical moving parts like springs or levers.

View Details
How To Replace PN25 Ball Valve
11-August 2025

How To Replace PN25 Ball Valve

When a PN25 ball valve fails — whether due to leakage, corrosion, or operational wear — replacing it correctly is critical to maintaining system safety, avoiding costly downtime, and ensuring long-term performance. This article walks you through why, when, and how to replace a PN25 ball valve, with safety tips and best practices from industry standards.

View Details
Is Globe Valve Always The Right Choice
8-August 2025

Is Globe Valve Always The Right Choice

Globe valves are great when you need fine control of fluid flow, but like any tool, they’re not perfect for every job. Before you go ahead and install one, let’s walk through a few reasons why a globe valve might not be your best pick.

View Details
Is Your Ball Valve Bad
8-August 2025

Is Your Ball Valve Bad

Ball valves are built to last, but they don’t live forever. Whether it’s in your home plumbing system or an industrial application, a faulty ball valve can lead to annoying drips, dangerous leaks, or full-on system shutdowns.So how do you know when it's time to replace a ball valve?

View Details