Manual Butterfly Valve Manufacturer|Manual Operated Butterfly Valve

Butterfly valves are essential components in fluid control systems, offering a reliable and cost-effective solution for regulating flow in various industrial applications. Among the different types of butterfly valves, the **Manual Butterfly Valve** stands out for its simplicity, durability, and ease of operation. This article provides an in-depth analysis of the manual butterfly valve, covering its features, advantages, technical specifications, applications, and the company behind its production.

Understanding Manual Butterfly Valves

A **Manual Butterfly Valve** is a type of quarter-turn valve that uses a disc to control the flow of fluids. Unlike electric or pneumatic actuators, manual valves are operated by hand, making them ideal for applications where automation is unnecessary or cost-prohibitive. The two primary manual operation methods are lever-operated and gear-operated systems, both of which fall under the broader category of manual butterfly valves.

Key Features of Manual Butterfly Valves

Manual butterfly valves are designed with a focus on simplicity and efficiency. Their **simple structure** ensures minimal maintenance and long service life. The disc, typically made of durable materials, rotates within the valve body to either allow or block fluid flow. The **compact design** of these valves makes them suitable for installations with limited space, while their **lightweight construction** facilitates easy handling and installation.

Comparing Manual and Pneumatic Actuator Butterfly Valves

While **Pneumatic Actuator Butterfly Valves** offer automated control, manual valves provide a more straightforward and economical alternative. The following table highlights the key similarities between the two types:

Material	Pressure Rating	Applications	Installation
Body: Grey Cast Iron, Ductile Cast Iron, Stainless Steel 304/316, Carbon Steel Disc: Ductile Cast Iron (Nickel-plated or Nylon coated), Stainless Steel 304/316, Aluminum Bronze Stem: Stainless Steel 410/416/304/316 Seat: EPDM, BUNA-N, PTFE, Viton, Hypalon, Neoprene, Metal Seated	CLASS 125/150; PN10/16/25; 5K/10K/16K	API 609, BS5155, MSS SP-67/68, EN593	Flange alignment, no gaskets between flanges, bolts tightened after full opening

Advantages of Manual Butterfly Valves

Manual butterfly valves offer several advantages that make them a preferred choice in many industries:

• Easy Installation: The straightforward design allows for quick and hassle-free installation, reducing downtime and labor costs.
• Cost-Effective: Without the need for complex actuation systems, manual valves are more affordable than their automated counterparts.
• Reliability: With fewer moving parts, manual valves are less prone to mechanical failures and require minimal maintenance.
• Space Efficiency: Their compact size makes them suitable for applications where space is a constraint.

Technical Specifications

The technical specifications of manual butterfly valves are designed to meet industry standards, ensuring compatibility and performance across various applications. Key parameters include:

Material Compatibility

• Body Materials: Grey Cast Iron, Ductile Cast Iron, Stainless Steel 304/316, Carbon Steel
• Disc Materials: Ductile Cast Iron (Nickel-plated or Nylon coated), Stainless Steel 304/316, Aluminum Bronze
• Stem Materials: Stainless Steel 410/416/304/316
• Seat Materials: EPDM, BUNA-N, PTFE, Viton, Hypalon, Neoprene, Metal Seated

Pressure Ratings

• CLASS 125/150
• PN10/16/25
• 5K/10K/16K

Standards Compliance

• API 609
• BS5155
• MSS SP-67/68
• EN593

Applications of Manual Butterfly Valves

Manual butterfly valves are widely used in various industries due to their versatility and reliability. Some common applications include:

• Water Treatment: Controlling flow in municipal water supply systems and wastewater treatment plants.
• HVAC Systems: Regulating air and water flow in heating, ventilation, and air conditioning systems.
• Chemical Processing: Managing the flow of corrosive and non-corrosive fluids in chemical plants.
• Power Generation: Controlling cooling water and steam flow in power plants.
• Food and Beverage: Ensuring hygienic flow control in food processing and beverage production.

Installation Guidelines

Proper installation is crucial to ensure the optimal performance of manual butterfly valves. Follow these steps for a successful installation:

1. Flange Alignment: Space out the flanges to allow the valve to pass easily. Ensure the disc is in a half-opened position.
2. No Gaskets: Avoid fitting gaskets between the flanges to prevent misalignment.
3. Bolt Installation: Place all bolts with the disc in a half-opened position. Do not tighten the nuts immediately.
4. Final Tightening: Open the valve fully to verify pipeline alignment, then tighten the nuts.

Company Background: Ningjin Thriveon Valve Co., Ltd.

**Ningjin Thriveon Valve Co., Ltd.**, a leading manufacturer of industrial valves, has been at the forefront of valve technology for over a decade. The company specializes in producing high-quality butterfly valves, including **manual butterfly valves**, that meet international standards. With a commitment to innovation and customer satisfaction, Ningjin Thriveon has established itself as a trusted name in the global market.

As a manufacturer, Ningjin Thriveon adheres to rigorous quality control measures to ensure that every product meets the highest standards of performance and durability. Their **manual butterfly valves** are designed to withstand harsh environments and provide reliable operation in diverse applications.

Conclusion

Manual butterfly valves are a versatile and cost-effective solution for fluid control in various industries. Their simple design, ease of installation, and compliance with international standards make them a preferred choice for many applications. When selecting a manual butterfly valve, it is essential to consider factors such as material compatibility, pressure ratings, and industry-specific requirements.

For more information about **manual butterfly valves** or to explore the product range offered by **Ningjin Thriveon Valve Co., Ltd.**, visit their official website. Whether you are in the water treatment, HVAC, or chemical processing industry, Ningjin Thriveon provides reliable solutions tailored to your needs.

References

[1] National Institute of Standards and Technology (NIST). https://www.nist.gov. Retrieved from NIST's official website for standards and guidelines.