Bolted-bonnet Valves

Bolted-bonnet valves are characterized by their removable bonnet, which is secured to the valve body with bolts. This design allows for easier maintenance and repair of the valve internals without removing the entire valve from the pipeline.

Grades:

1. Carbon Steel:
   • A105, A216 WCB: Suitable for general service, providing good strength and durability.
2. Stainless Steel:
   • 304, 316: Offers enhanced corrosion resistance and high-temperature performance.
3. Alloy Steel:
   • A182 F11, F22: For high-pressure and high-temperature applications.

Sizes:

• Diameter: Typically ranges from 2 inches to 48 inches

Applications:

1. Oil and Gas: Used in pipelines and facilities requiring reliable isolation and ease of maintenance.
2. Chemical Processing: Ideal for handling various chemicals with the benefit of easy internal access for maintenance.
3. Water Treatment: Provides reliable shut-off and control in water and wastewater systems, with the advantage of simple repair and maintenance.

These valves are valued for their robust construction and convenience in maintenance, making them suitable for demanding applications where accessibility and reliability are critical.