The patent technology of Butterfly Valve

The patent technology of a butterfly valve typically refers to innovations and improvements related to the design, materials, actuation, and sealing mechanisms of butterfly valves. Butterfly valves are quarter-turn valves that use a rotating disc to regulate the flow of fluids. Over the years, various aspects of their design have been patented to improve efficiency, durability, control, and cost-effectiveness.

Here’s an overview of the types of patented technologies often associated with butterfly valves:

1. Valve Disc and Shaft Design

Innovations: Improved disc shapes for better fluid dynamics, reduced torque, and minimized pressure drop.

Patents May Include:

Offset disc designs (single, double, triple offset)

Shaft-to-disc connection mechanisms

Disc materials or surface treatments to enhance corrosion resistance

2. Sealing Mechanisms

Innovations: Enhanced sealing for high-pressure or high-temperature applications.

Common Patented Features:

Triple offset sealing (metal-to-metal sealing for zero leakage)

Resilient seat designs (elastomeric seats for better shutoff)

Self-adjusting or pressure-assisted seals

3. Valve Actuation and Control

Innovations: Actuation methods for automation and remote control.

Related Patents:

Pneumatic, electric, or hydraulic actuators

Position indicators and smart control systems (e.g., IoT integration)

4. Body and Construction Materials

Innovations: Use of composite materials, corrosion-resistant alloys, or manufacturing techniques.

Patents Might Cover:

Lighter-weight valve bodies with equal or greater strength

Methods for bonding lining materials (like PTFE or rubber) to the valve body

5. Application-Specific Designs

For industries such as:

Food and beverage (sanitary butterfly valves)

High-temperature steam or gas (metal-seated designs)

Marine or chemical processing (corrosion resistance)

Examples of Real Patent Titles (Summarized)

“Triple Offset Butterfly Valve with Self-Centering Disc”

“Resilient Seated Butterfly Valve with Low Operating Torque”

“High Performance Butterfly Valve for Cryogenic Applications”

Finding Butterfly Valve Patents

If you're interested in exploring existing patents:

Use databases like Google Patents, USPTO, or Espacenet

Search terms like “butterfly valve”, “offset butterfly valve”, “sealing butterfly valve”, “butterfly valve actuator”

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