The Complete Guide to Butterfly Valve Dimensions

Getting familiar with your butterfly valve size details plays a very crucial role to ensure your industrial operations perform at their most optimum level, at their most efficient, and are at their safest, whether you’d wish to use those butterfly valves for fluid control systems, HVAC systems, or water treatment facilities.  

So, in this guide presented to you with XINTAI Valve, you will explore the importance of these dimensions, why they matter, and general charts for these valves’ sizes in the industry and for our catalog. In summary, you will know:

– Why butterfly valve dimensions matter

– Sizes of various types of butterfly valves

– XINTAI’s butterfly valve size chart

Butterfly Valve Size Guides: Why Do They Matter?

Such valves are useful for a wide range of industrial applications, primarily due to their simplicity, reliability, and cost-effectiveness.

With regards to their structure, these valves consist of a rotating disk on their axis laid out across the pipe’s diameter for flow regulation, just like how your engine’s strangulate work.

Knowing the dimensions of these valves is essential in several aspects of its function, in many ways:

1. For Performance

Investing in butterfly valves, but with the wrong sizing leads to inefficient flow control, affecting your system’s pressure and flow rates.

• Flow rate stats: The size of valves influences the amount of fluid that can flow through them. Too small a valve for the necessary flow rate causes too much friction. If this happens, pressure drops.
• Pressure ratings: You should know also that butterfly valves are rated from specific pressure levels, but these depend on the butterfly valve dimensions standard. Larger valves usually support higher pressure ratings.

2. For Installation

This should be a no-brainer, since you really cannot install the valves right if they do not have the right dimensions. This is important with regards to flange compatibilities and butterfly valve face-to-face dimensions.

• Flange compatibilities: The size of the flange must align with the flage of your pipe. This ensures secure and leak-proof connectivity.
• Face-to-face distance: With incorrect face-to-face measurements, adjustments and additional installation may be necessary, increasing time and cost.

3. For Maintenance

Save time on maintenance by ensuring your butterfly valves’ sizes are correct. This provides proper sealing and flow properties, minimizing wearing and tearing. Here are the concepts at play:

• Seal integrity: Precise valve dimensions ensure seals work perfectly, preventing leaking and reducing too high a maintenance cost.
• Longer life: Properly sized valves won’t experience strain, which means better longevity and fewer breakdowns.

Various Butterfly Valve Dimensions

Butterfly valves are never a one-size-fits-all. There are various types and designs, each according to their specific applications, environments, and installation pre-requisites. Here’s a look at these valves and their dimensions. This way, you can shop them right.

1. Wafer Butterfly Valve

These are very compact, installed in-between two overlaps with the use of bolts passing across the body. Very lightweight, so they are perfect for low-pressure systems. Read on for the butterfly valve wafer type dimensions.

Dimensions:

• 2 inches to 24 inches in diameter
• Disc thickness between 3/16 to ¼ inches
• Designed to handle up to 150 psi pressure range

2. Lug Type Butterfly Valve

Meanwhile, these valves are characterized by their threaded inserts, hence the name, that paves the way for easier installation, ideal for industries with lots of isolation needs. The lug type butterfly valve dimensions are as follows.

Dimensions:

• Sizes range from 2 up to 24 inches in diameter
• Able to handle pressures up to 300 psi, but depends on materials and construction

3. Concentric Butterfly Valve

On the other hand, they feature discs wherein the center is aligned with the center of the valve’s body and stem. With this layout, it is used to control flow in low-pressure and low-temperature systems.

Dimensions:

• Smaller in size
• Diameter is from 2 to 12 inches
• Excellent for HVAC and water systems

4. Single Offset Butterfly Valve

Basing from this name, this valve’s disc center is said to be offset from the centerline of the valve stem, enhancing sealing performance by reducing wearing between the disc and the valve’s seat. So, the body is made from strong iron or steel.

Dimensions:

• Sizes range from 4 to 24 inches
• Working pressures up to 150 psi

5. Double Offset Butterfly Valve

As for their design, there are two offsets, respectively for the disc and stem, then the other for the seat. The former is for two parts. This design specifically reduces the wear and stress on the sealing components, suitable for high-pressure and high-temperature conditions. Used in chemical facilities and power plants.

Dimensions:

• Sizes are from 6 to 48 inches
• Can handle pressures from 150 psi to 600 psi, depending on the material

6. Triple Offset Butterfly Valve

With this label, there are three offsets in play: one for the disc, the other for the stem, and the last for the sealing surface geometry. Use this valve for chemical processing, oil refining, and the like.

Dimensions:

• Larger in size, from 6 to 48 inches
• Could handle up to 1500 psi

7. Flanged Butterfly Valve

You know these valves with flanges attached to the valve’s body. This way, they can get bolted straightforward onto your pipelines’ flanges.

Dimensions:

• Sizes are from 4 to 72 inches
• Pressures can range from 150 to 1500 psi, depending on the construction

8. Plastic Butterfly Valve

Made from the toughest materials, these valves can resist rusting without adding weight to your surroundings. These characteristics make them an economical choice for handling fluids that won’t cause rust.

Dimensions:

• Sizing is from 1 inch to 12 inches
• Pressure ratings up to 150 psi

9. Stainless Metal Butterfly Valve

Used in food and pharmaceutical industries, these valves require the highest resistance against rusting. However, you must maintain them regularly.

Dimensions:

• From 2 to 36 inches
• Pressure ratings up to 300 psi

XINTAI’s Butterfly Valve Size Chart

While XINTAI’s catalog does not have every butterfly valve discussed above, its main range of these valves are high-performing. Find out their features and sizes:

• Centerline Wafer-Type Butterfly Valve: Made from materials like titanium alloy, their sizes are 3 to 48 inches.
• Double Eccentric Butterfly Valves: Also made from titanium alloy plus other materials, their sizes range from 3 inches to 72 inches.
• Triple Eccentric Butterfly Valves: Crafted with special materials, their sizes are also from 3 to 72 inches.

Why Choose XINTAI

XINTAI Valve should be your top choice when you are looking for butterfly valves made from the strongest materials and can perform for the specifications of your industrial processes. Take note that every product in our catalog follows the recommended certifications, such as those for the API 609 butterfly valve dimensions. We also adhere to ISO, ANSI, and related standards. Let us know your requirements. Speak with our team today.