SQK A351 CF3M Cast Stainless Steel Swing Check Valve

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MOQ : 5 Units

SQK A351 CF3M Cast Stainless Steel Swing Check Valve Specification

Structure
Swing Check Valve

Material
ASTM A351 CF3M Cast Stainless Steel

Power
Manual

Pressure
Class 150 to Class 300 (PN10-PN40)

Media
Water, Oil, Gas, Steam

Working Temperature
-29C to 200C

Port Size
1/2 inch to 12 inch

Surface
Shot Blasted / Pickled

Shape
Straight, Flanged Ends

Application
Industrial pipelines, chemical processing, water treatment, oil & gas

Face to Face Standard
ASME B16.10

Body Material
Cast Stainless Steel

Design Standard
API 6D / BS EN 1074

Testing Standard
API 598

Operation
Non-return, Self-acting

Pressure Rating
Class 150 / Class 300

Disc Material
CF3M Stainless Steel

Cover Material
Cast Stainless Steel

Gasket Material
PTFE

End Connection
Flanged

Size Range
DN50 to DN300

SQK A351 CF3M Cast Stainless Steel Swing Check Valve Trade Information

Minimum Order Quantity
5 Units

Supply Ability
200 Units Per Month

Delivery Time
7 Days

About SQK A351 CF3M Cast Stainless Steel Swing Check Valve

SQK A351 CF3M Cast Stainless Steel 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.

Durable Construction

Manufactured from ASTM A351 CF3M cast stainless steel, both the body and cover of this swing check valve are highly resistant to corrosion and harsh environments. The disc is also made from CF3M, ensuring longevity even under demanding service conditions. This robust construction makes the valve ideal for use with water, oil, gas, and steam.

Versatile Application

Suitable for installation in industrial pipelines, water treatment plants, chemical processing facilities, and oil & gas operations, this valve reliably prevents reverse flow. Its operational flexibility, covering temperatures from -29C to 200C and pressures from Class 150 to Class 300, supports broad application needs.

Strict Standard Compliance

SQK swing check valves are produced in accordance with respected international standards such as API 6D, BS EN 1074, and ASME B16.10 for design and dimensions. Every unit undergoes thorough API 598 testing, ensuring reliable performance, strict quality, and safe operation in critical settings.

FAQs of SQK A351 CF3M Cast Stainless Steel Swing Check Valve:

Q: How does the SQK A351 CF3M Swing Check Valve prevent backflow in pipelines?

A: This swing check valve has a self-acting, non-return mechanism where the disc opens with fluid flow and closes automatically when flow reverses, effectively preventing backflow without external power or manual intervention.

Q: What are the primary applications of this valve?

A: The valve is designed for industrial pipelines, chemical processing plants, water treatment systems, and oil & gas sectors, efficiently handling water, oil, gas, and steam media in these environments.

Q: When should I use a Class 150 vs. Class 300 variant of this valve?

A: Choose the pressure class based on your systems maximum operating pressure. Use Class 150 for lower pressures (up to PN10-PN16) and Class 300 for higher pressure requirements (up to PN40) as specified by your process.

Q: Where can the SQK swing check valve be installed?

A: Thanks to its flanged connections, the valve can be easily installed into straight pipeline arrangements within industrial settings, such as refineries, chemical plants, waterworks, and power stations.

Q: What benefits does the PTFE gasket provide in this valve?

A: PTFE gaskets offer excellent chemical resistance and sealing properties, ensuring leak-free operation and protection against aggressive process media.

Q: What surface treatments are applied to this valve?

A: The valves undergo either shot blasting or pickling processes, improving surface finish, removing impurities, and enhancing resistance to corrosion and wear.

Q: How is product quality confirmed for the SQK swing check valve?

A: Each valve is rigorously tested in accordance with the API 598 standard, which involves pressure and leakage tests to certify operational integrity and safety before shipping.

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