Stainless Steel Butterfly Valve

stainless steel electric flanged butterfly valve

butterfly valve dimensions

What Are The Types Of Stainless Steel Butterfly Valve?

1. Wafer Type Stainless Steel Butterfly Valve:
   • This type of valve is designed to be installed between two flanges in a pipeline.
   • It has a slim profile and is secured in place by the flange bolts, making it a compact and space-saving solution.
2. Lug Type Stainless Steel Butterfly Valve:
   • The lug type valve has threaded holes in the body, allowing it to be bolted directly to the flanges.
   • This design provides a secure attachment and makes the valve suitable for bidirectional flow.
3. Double Flanged Stainless Steel Butterfly Valve:
   • This valve features flanged ends on both sides, enabling easy installation between standard pipeline flanges.
   • The double-flanged design offers a reliable and leak-tight connection.
4. High Performance Stainless Steel Butterfly Valve:
   • These valves are engineered for demanding applications that require enhanced performance and reliability.
   • They often feature advanced design elements, such as triple eccentric disc geometry, to provide tight shutoff and improved flow control.

What Is Stainless Steel Butterfly Valve?

A Stainless Steel Butterfly Valve is a type of industrial valve that uses a rotary disc to regulate the flow of fluids. The valve is characterized by its simple and compact design, making it a popular choice for a wide range of applications. The stainless steel construction provides excellent corrosion resistance, allowing the valve to withstand exposure to harsh chemicals, high temperatures, and other demanding operating conditions. The butterfly valve operates by rotating a disc, which is connected to a shaft, to open, close, or partially restrict the flow. This design offers precise flow control and quick, efficient shut-off capabilities, making it a versatile and reliable solution for various industries, including water treatment, chemical processing, and HVAC systems.

How to Select the Right Stainless Steel Butterfly Valve?

• Size and Pressure Rating: Ensure the valve size and pressure rating match the pipeline specifications to ensure proper flow and system compatibility. Pressure and temperature limits should also be evaluated.
• Body and Disc Material: Choose the appropriate stainless steel grade, such as 304 or 316, based on the fluid compatibility and corrosion resistance requirements of the application.
• Valve Design: Evaluate the valve design features, such as the disc type (e.g., resilient-seated, metal-seated) and the actuation method (e.g., manual, electric, pneumatic), to meet the specific needs of the system.
• End Connections: Select the valve end connections (e.g., wafer, lug, flanged) that are compatible with the existing pipeline configuration and installation requirements.
• By carefully considering these factors, users can select the Stainless Steel Butterfly Valve that provides the optimal performance, reliability, and cost-effectiveness for their particular application.

Features of Stainless Steel Butterfly Valve

• Compact Design:
  Stainless Steel Butterfly Valves feature a compact and space-saving design, making them suitable for installation in tight spaces and crowded piping systems.
• Corrosion Resistance:
  The stainless steel construction provides excellent resistance to corrosion, allowing these valves to withstand exposure to a wide range of chemicals, fluids, and harsh environments.
• Efficient Shut-off:
  These valves offer quick and efficient shut-off capabilities, with the rotary disc mechanism providing precise flow control and reliable sealing when the valve is fully closed.
• Versatile Actuation:
  Stainless Steel Butterfly Valves can be equipped with various actuation methods, such as manual, electric, or pneumatic, to suit different application requirements and control needs.
• Easy Maintenance:
  The simple design and few moving parts of these valves contribute to their low maintenance requirements, making them easy to service and keep in operation.
• Wide Range of Sizes:
  Stainless Steel Butterfly Valves are available in a wide variety of sizes, allowing users to select the appropriate valve for their specific pipeline and flow demands.

Advantages and Disadvantages of Stainless Steel Butterfly Valve

Advantages of Stainless Steel Butterfly Valve:

1. Corrosion Resistance: The stainless steel construction provides excellent resistance to corrosion, making these valves suitable for use in harsh environments and with a wide range of fluids.
2. Compact Design: Stainless Steel Butterfly Valves have a compact and space-saving design, allowing for easy installation in tight spaces.
3. Efficient Shut-off: These valves offer quick and reliable shut-off capabilities, with the rotary disc mechanism providing precise flow control.
4. Versatile Actuation: Stainless Steel Butterfly Valves can be equipped with various actuation methods, such as manual, electric, or pneumatic, to suit different application requirements.
5. Low Maintenance: The simple design and few moving parts of these valves contribute to their low maintenance requirements, making them easy to service and keep in operation.

Disadvantages of Stainless Steel Butterfly Valve:

1. Limited Throttling Capability: Stainless Steel Butterfly Valves are not as well-suited for precise flow throttling as other valve types, such as globe valves.
2. Potential for Leakage: The rotary disc design of these valves may be more susceptible to leakage compared to other valve types, especially if the seals and gaskets are not properly maintained.
3. Higher Cost: Stainless Steel Butterfly Valves generally have a higher upfront cost compared to some other valve options, due to the premium materials and manufacturing processes involved.
4. Flow Disturbance: The rotary disc of the Stainless Steel Butterfly Valve can cause some flow disturbance, which may affect the performance of downstream equipment in certain applications.
5. Limited Temperature Range: Depending on the specific design and materials used, Stainless Steel Butterfly Valves may have a more limited temperature range compared to other valve types.

The Specifications of Stainless Steel Butterfly Valve

Specification	Details
Type	Stainless Steel Butterfly Valve
Ball Material	316 Stainless Steel
Attachment Type	Wafer
Thread Standard	ANSI/ASME B16.5
Thread Size	2 inch
Body Material	316 Stainless Steel
Safe for Use With	Water, Steam, Oil, Gas, Chemicals
Handle Type	Lever
Handle Material	Stainless Steel
Maximum Working Pressure	150 psi
Maximum Working Pressure	10 bar
Operating Pressure	0-150 psi (0-10 bar)

The Installation Steps for Stainless Steel Butterfly Valve

1. Pipeline Preparation: Ensure the pipeline is properly aligned and ready, with no debris or residue. Use pipe cutting tools if necessary to trim the pipeline.
2. Valve Positioning: Based on the pipeline size and flow direction, position the Stainless Steel Butterfly Valve correctly, ensuring the valve’s orientation matches the pipeline’s flow direction.
3. Bolt Connection: Use appropriate bolts, washers, and nuts to connect the valve to the pipeline flanges, tightening them evenly to ensure a proper seal. It is recommended to use ANSI/ASME B16.5 standard connection fittings.
4. Moving Parts Inspection: Rotate the valve handle to ensure the disc can open and close smoothly, without any apparent binding or abnormal issues.
5. Leak Testing: Slowly pressurize the system and check the valve’s surroundings for any leakage. If leaks are detected, readjust the connections.
6. Functional Verification: Operate the valve open and close multiple times to confirm its reliable ability to shut off and restore pipeline flow.
7. Record Keeping: Document the valve model, installation date, and the operator’s information for future maintenance and troubleshooting purposes.

The Operation Theory of Stainless Steel Butterfly Valve

1. Operation Principle:
   • Stainless Steel Butterfly Valves use a rotary disc mechanism to control fluid flow.
   • The disc rotates 90 degrees between the fully open and fully closed positions, providing quick and efficient shut-off.
   • The disc’s tight sealing against the valve seat ensures reliable flow control and isolation when the valve is closed.
2. Aluminum Stainless Steel Butterfly Valves:
   • Aluminum Stainless Steel Butterfly Valves are a variant that utilizes an aluminum body instead of a stainless steel body.
   • Aluminum offers a lower weight option, making it suitable for applications where reduced valve weight is desirable, such as in mobile or portable equipment.
   • The aluminum construction provides good corrosion resistance, though not to the same extent as the stainless steel version.
3. Stainless Steel Butterfly Valve Flanges:
   • Stainless Steel Butterfly Valves are typically available with wafer-style or lug-style flanges for installation.
   • Wafer-style flanges fit between two pipeline flanges, held in place by the bolts that connect the pipeline flanges.
   • Lug-style flanges have protruding bolt holes, allowing the valve to be installed independently and then connected to the pipeline.
   • The stainless steel flanges provide corrosion resistance and a secure connection to the pipeline.
4. Actuation Options:
   • Stainless Steel Butterfly Valves can be equipped with various actuation methods, including manual, electric, or pneumatic.
   • The choice of actuation depends on the application requirements, such as the need for remote operation, precise control, or fast response times.
5. Applications:
   • Stainless Steel Butterfly Valves are widely used in a variety of industries, including chemical processing, water treatment, food and beverage, and HVAC systems, due to their versatility, durability, and corrosion resistance.