8 inch Butterfly Valve

Advantages of 1 in Ball Valves

• Inline quarter-turn valve shuts air flow to air line on or off
• Solid brass body for long-life corrosion resistance
• Can also be used as moisture drain on system
• Adjustable stem packing nut

The Parameter of 8″ Butterfly Valve

1. Valve Size: 8 inches, suitable for medium-sized pipelines.
2. Pressure Rating: Typically ANSI 150 or ANSI 300, ensuring compatibility with various pressure levels.
3. Temperature Range: Standard operating temperature ranges from -20°C to 200°C (-4°F to 392°F), suitable for most industrial applications.
4. Body Material: Constructed from durable materials such as stainless steel, carbon steel, or ductile iron.
5. Disc Material: Made of corrosion-resistant materials like stainless steel or ductile iron for longevity.
6. Seat Material: Utilizes resilient materials such as EPDM or PTFE for reliable sealing.
7. Actuation Type: Compatible with manual, pneumatic, or electric actuators for flexible operation.
8. End Connection: Available with flanged, wafer, or lug end connections for easy installation.
9. Leakage Rate: Engineered to meet industry standards for minimal leakage, ensuring efficient operation.
10. Fire Safety: May feature fireproof seat design and metal-to-metal seals to withstand high temperatures.
11. Compliance: Complies with industry standards such as API, ANSI, and ISO for quality assurance.
12. Maintenance: Designed for easy maintenance with features like replaceable seats and seals, reducing downtime.
13. Accessories: Compatible with various accessories like positioners, limit switches, and actuators for enhanced functionality.

The Operation Theory of 8″ Butterfly Valve

The operation theory of an 8″ Butterfly Valve involves the rotation of a disc perpendicular to fluid flow for control. This design, akin to INTEC Duoball Valve, ensures efficient regulation compliant with API 608 standards. Manufactured by leading industrial valve manufacturers like DSI, known for forged steel valves, it’s often featured in their gate valve catalogue.

The Parameters Table of 8″ Butterfly Valve

Parameter	Description
Valve Size	8 inches
Pressure Rating	ANSI 150, ANSI 300, etc.
Temperature Range	-20°C to 200°C (-4°F to 392°F)
Body Material	Stainless steel, carbon steel, ductile iron
Disc Material	Stainless steel, ductile iron, aluminum
Seat Material	EPDM, PTFE, metal-to-metal
Actuation Type	Manual, pneumatic, electric
End Connection	Flanged, wafer, lug
Leakage Rate	Meets or exceeds industry standards
Fire Safety	Fireproof seat design, metal-to-metal seals
Compliance	API 608, ANSI, ISO
Maintenance	Replaceable seats and seals for easy upkeep
Accessories	Compatible with various actuators, limit switches

Relevant Information about 8″ Butterfly Valve

1. Rotor: The rotor is the rotating part of the valve responsible for controlling the flow of fluid. In a butterfly valve, it’s the disc that pivots to open or close the flow path.
2. Stator: The stator refers to the stationary part of the valve, typically the valve body and seat. It provides support and creates a sealing surface for the rotor to operate against.
3. Universal Joint: The universal joint connects the actuator to the valve shaft, allowing for rotational movement. It ensures that the motion from the actuator is accurately transmitted to the valve.
4. Shaft Seal: The shaft seal prevents leakage along the valve shaft where it passes through the valve body. It’s a crucial component for maintaining the integrity of the valve and preventing fluid loss.
5. Driving System: The driving system consists of the actuator and associated mechanisms that provide the force to operate the valve. It can be manual, pneumatic, or electric, depending on the application requirements.