A350 LF2 Alloy Steel PIston Type Lift Check Valve

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MOQ : 5 Units

A350 LF2 Alloy Steel PIston Type Lift Check Valve Specification

Structure
Piston Type Lift Check

Material
A350 LF2 Alloy Steel

Power
Manual

Pressure
Class 150 to Class 1500

Media
Water, Oil, Gas

Working Temperature
-46C to 425C

Port Size
1/2 inch to 12 inch

Surface
Anti-corrosive, Shot Blasted

Shape
Straight Pattern

Application
Oil & Gas, Refinery, Petrochemical, Power Plant, General Industries

Seat Test Pressure
Up to 55 bar

Operation
Non-Return

Trim Material
Stainless Steel / Alloy Steel

Face to Face Dimension
ASME B16.10

End Connection
Flanged

Body Test Pressure
Up to 75 bar

Pressure Rating
Class 150 / 300 / 600

Bonnet Type
Bolted Bonnet

Standard
ASTM A350 LF2

Leakage Class
API 598

Disc Design
Piston Guided

A350 LF2 Alloy Steel PIston Type Lift Check Valve Trade Information

Minimum Order Quantity
5 Units

Supply Ability
200 Units Per Month

Delivery Time
7 Days

About A350 LF2 Alloy Steel PIston Type Lift Check Valve

A350 LF2 Alloy Steel PIston Type Lift 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 Engineered for Reliability

This piston type lift check valve ensures consistent, energy-efficient non-return flow control under varying pressures, protecting machinery and pipelines from reverse flow. High testing standards, robust construction, and a range of pressure ratings make it suitable for mission-critical industries such as refineries, power plants, and petrochemical operations.

Robust Material and Design

Manufactured from ASTM A350 LF2 alloy steel and featuring a bolted bonnet, this valve ensures extended durability and leak-tight operation even under extreme process conditions. The piston-guided disc design and anti-corrosive, shot-blasted surface add to its long service life in challenging environments.

Adaptable to Multiple Applications

With a temperature tolerance from -46C to 425C and port sizes from 1/2 inch to 12 inch, this valve fits a broad spectrum of pipeline configurations across oil & gas, water, and general industrial media, making it a flexible choice for distributors, exporters, and manufacturers in India and beyond.

FAQs of A350 LF2 Alloy Steel PIston Type Lift Check Valve:

Q: How does the piston type lift check valve prevent reverse flow?

A: The piston type lift check valve operates automatically, allowing fluid to flow in one direction by lifting the piston when there is forward pressure. In the event of backflow, the piston descends, sealing the valve and preventing reverse movement of fluids, thus protecting downstream equipment.

Q: What materials are used in the construction of this valve?

A: The valve body is crafted from ASTM A350 LF2 alloy steel, with trim components available in stainless steel or alloy steel. This combination delivers high strength, excellent corrosion resistance, and durability in demanding industrial environments.

Q: When should this valve be used in a pipeline system?

A: This lift check valve is ideal for applications requiring reliable non-return capabilities in high-pressure lines, such as oil & gas, petrochemical processing, power generation, and general industries, especially where pipeline integrity and equipment protection are critical.

Q: Where can the A350 LF2 piston type lift check valve be installed?

A: The valve is suitable for installation in pipelines conveying water, oil, or gas, and is widely utilized in facilities like refineries, power plants, and petrochemical units across India and international markets.

Q: What is the process for installing this valve?

A: The valve should be installed in a horizontal or vertical position with the flow arrow pointing in the direction of normal fluid flow. Ensuring proper flange alignment and torqueing bolts as per ASME standards guarantees leak-free operation. It is advisable to follow the manufacturers guidelines during installation.

Q: Which standards and pressure classes does this valve meet?

A: It complies with ASTM A350 LF2 material standards, has flanged ends per ASME B16.10, and is available in Class 150, 300, 600, and up to 1500 pressure ratings. Leakage is controlled to API 598 requirements for assured sealing efficiency.

Q: What are the main benefits of using this lift check valve?

A: Key benefits include reliable non-return protection, broad media compatibility, high pressure and temperature endurance, anti-corrosive surface treatment, and ease of maintenance due to its bolted bonnet structure. The valves design extends equipment lifespan by minimizing the risk of damage from backflow.

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