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A351 CN7M Alloy 20 Swing Check Valve

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MOQ : 5 Units

A351 CN7M Alloy 20 Swing Check Valve Specification

Structure
Swing Check Valve

Material
A351 CN7M Alloy 20

Power
Manual

Pressure
Up to 150 Class, 300 Class, 600 Class

Media
Liquids, Chemicals

Working Temperature
-29C to 120C

Port Size
2 to 24

Surface
Anti-corrosive Finish

Shape
Swing Type

Application
Chemical Processing, Petrochemical, Pharmaceutical, Food and Beverage, Pulp and Paper

Connection Type
Flanged Ends

Corrosion Resistance
Excellent for acidic and chloride environments

Body Material
Alloy 20 (Nickel-Iron-Chromium)

Internal Coating
Optional Epoxy/Glass lining

Leakage Class
Class VI (Bubble Tight) as per API 598

Seat Type
Metal or Soft Seated

Operation Type
Swing (Gravity Operated)

Face to Face Dimension
As per ASME B16.10

Installation Position
Horizontal / Vertical (as per application)

Design Type
Full Port, Reduced Port (As Specified)

Testing
100% Hydrostatic & Pneumatic

Flow Direction
Unidirectional

End Connection Standard
ANSI/ASME B16.5

A351 CN7M Alloy 20 Swing Check Valve Trade Information

Minimum Order Quantity
5 Units

Supply Ability
200 Units Per Month

Delivery Time
7 Days

About A351 CN7M Alloy 20 Swing Check Valve

A351 CN7M Alloy 20 Swing Check Valve

The API BS 1868 series of Swing Check Valves is exceptionally sturdy, rugged and durable, with a reputation for quality, integrity, and long service.

They are designed for tight sealing and ease of operation. The valves are available flanged & butt-weld ends in pressure rating from ASME Class 150 to Class 2500, and in a variety of materials of construction.

Check Valves are of swing-type and bolted-cover construction. They conform to BS 1868 and also meet the general requirements of API 600, including shell wall thickness.

Main features :

Bolted body-cover design, seal welded & Valves with pressure seal cover
Bolted body-cover joints provided with spiral-wound stainless steel gasket and graphite filler for maximum protection against leaks
Die-formed graphite inner packing rings and braided graphite end rings with Inconel wire reinforcement and corrosion inhibitor
T-head stem-disc connection of gate valve fully meets strength requirements of API 602 and API 598
Rolled ACME thread on the stem for smooth operation
Tapered shoulder on the stem for back seating
Self-aligning type gland assembly with stud-and-nut tightening
Integral hard-faced body seat for globe and check valves
Spring-loaded disc on check valves suitable for no horizontal applications too
Gate and globe valves can be offered with electrical actuators
Austenitic SS forging for body and bonnet of Cryogenic valves, resulting in excellent impact strength, minimal heat loss, and resistance to corrosion
Valves can be offered to NACE MR-0175 and other special NACE requirements

Cast steel ASME B16.34 Swing Check Valves Pressure Seal Bonnet design

The ASME B16.34 Swing Check, and Y Type Swing Check Valves feature a pressure seal bonnet design for high-pressure services. These valves are extensively used in high pressure and high-temperature steam, oil, gas, chemical, and water applications in thermal power plants, fertilizer plants, petrochemical plants, and refineries. These valves are available in butt weld ends in pressure ratings of Classes 900, 1500 and 2500, and come in carbon steel and alloy steel construction.

Precision Design for Reliable Performance

Engineered to exceed industry standards, this swing check valve features an alloy 20 body for exceptional corrosion resistance. It supports both horizontal and vertical installation, adapting seamlessly to any pipeline configuration. Tested for 100% hydrostatic and pneumatic integrity, it guarantees leak-free operation and durability in demanding conditions.

Versatile Applications Across Industries

From chemical processing to food and beverage production, the Alloy 20 Swing Check Valve is built for versatility. Its robust design and bubble-tight sealing make it suitable for a wide range of media, including aggressive liquids and chemicals. The valve's anti-corrosive surface and epoxy/glass-lined options extend operational lifespan in harsh environments.

FAQ's of A351 CN7M Alloy 20 Swing Check Valve:

Q: How does the Alloy 20 Swing Check Valve prevent backflow in pipeline systems?

A: The swing (gravity operated) mechanism allows the valve to open with forward flow and close automatically when flow reverses, thus preventing backflow and protecting equipment downstream.

Q: What are the main benefits of choosing an Alloy 20 body for this check valve?

A: Alloy 20 provides excellent resistance to acidic and chloride-rich environments, making it ideal for industries handling corrosive chemicals. This significantly extends valve service life and reduces maintenance costs.

Q: When should the valve be installed horizontally versus vertically?

A: The valve is suitable for both positions; installation direction depends on pipeline layout and flow requirements. Ensure the flow arrow matches the process direction for optimal operation.

Q: Where is this swing check valve typically used?

A: It is commonly installed in chemical processing plants, petrochemical facilities, pharmaceutical manufacturing, food and beverage systems, and pulp and paper industries owing to its corrosion resistance and bubble-tight sealing.

Q: What process is followed in testing valve performance?

A: Each valve undergoes rigorous hydrostatic and pneumatic testing, as per API 598, to ensure bubble-tight (Class VI) leakage performance and structural integrity before shipment.

Q: How is the end connection standard ensured?

A: The flanged ends comply with ANSI/ASME B16.5, ensuring compatibility with industry-standard piping and facilitating secure, leak-proof connections.

Q: What port sizes and pressure classes are available for this valve?

A: The valve is manufactured in sizes ranging from 2" to 24" and pressure ratings of 150 Class, 300 Class, and 600 Class, with options for full or reduced port, as specified for the application.

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