SQK A352 LCB Carbon Steel Check Valve

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MOQ : 5 Units

SQK A352 LCB Carbon Steel Check Valve Specification

Structure
Bolted Cover

Material
A352 LCB Carbon Steel

Power
Manual

Pressure
Class 150 to 1500

Media
Water, Oil, Gas

Working Temperature
-46C to 345C

Port Size
2 inch to 24 inch

Surface
Anti-corrosive painted

Shape
Swing Type

Application
Oil, Gas, Water and Steam systems

Face to Face Standard
ASME B16.10

Leakage Class
Class IV / V

Disc Material
ASTM A352 LCB Carbon Steel

Bonnet Type
Bolted Bonnet

Seat Type
Metal / Soft Seated

End Connection
Flanged / Butt Weld

Operation
Non-return (automatic)

Design Standard
API 6D / BS EN 14341

Body Test Pressure
Hydrostatic

Seat Test Pressure
Hydrostatic / Air

Size Range
DN50 to DN600

SQK A352 LCB Carbon Steel Check Valve Trade Information

Minimum Order Quantity
5 Units

Supply Ability
200 Units Per Month

Delivery Time
7 Days

About SQK A352 LCB Carbon Steel Check Valve

SQK A352 LCB Carbon Steel 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.

Superior Non-return Performance

Designed for automatic operation, the SQK A352 LCB Check Valve prevents backflow in pipelines, ensuring efficient and unidirectional fluid movement. Its advanced swing-type structure and quality-tested components contribute to minimal leakage (Class IV/V), reliability, and enhanced system safety.

Durable Construction for Critical Applications

Fabricated from ASTM A352 LCB Carbon Steel, this check valve withstands rigorous environments and pressures. The bolted bonnet and anti-corrosive surface treatment provide longevity and resistance against harsh media in oil, gas, water, and steam pipelines, supporting both above- and below-ground installations.

Versatile Connection and Sizing Options

With flanged or butt weld end connections and compatibility with a wide size range (DN50 to DN600), this valve is adaptable to various industrial piping layouts. Its compliance with major industry standards ensures easy integration and dependable service in different applications.

FAQs of SQK A352 LCB Carbon Steel Check Valve:

Q: How does the SQK A352 LCB Carbon Steel Check Valve operate in fluid systems?

A: The valve operates automatically as a swing-type check valve, allowing fluid to flow in one direction and preventing backflow without manual intervention. This ensures the protection of equipment and maintains steady system operation.

Q: What ensures the leakage resistance and safety of this check valve?

A: Leakage resistance is achieved through Class IV or V seat tightness, with options for both metal and soft seats. Combined with a hydrostatically tested body and seat, the valve offers enhanced sealing and operational safety.

Q: When should I use a metal seated versus a soft seated valve configuration?

A: Metal seats are preferable for high-temperature or abrasive applications, while soft seats provide superior tightness and are suitable for lower temperature or less aggressive media. Selection depends on your specific service conditions.

Q: Where can the SQK A352 LCB Check Valve be installed?

A: This valve is suitable for installation in various pipelines carrying water, oil, gas, or steam, including refineries, power plants, and water distribution facilities, particularly where non-return protection is essential.

Q: What is the process for ensuring the valves performance and reliability?

A: Each valve undergoes hydrostatic testing for both body and seat, as per ASME and API standards, verifying structural integrity and leak tightness before reaching the customer.

Q: What benefits do the anti-corrosive painted surface and robust structure provide?

A: The anti-corrosive paint offers additional protection against rust and external environmental factors, while the strong bolted bonnet and LCB carbon steel construction ensure the valves long service life with minimal maintenance.

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