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Class 300 Swing Check Valve

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MOQ : 5 Units

Class 300 Swing Check Valve Specification

Structure
Swing check, Bolted Cover

Material
Carbon Steel / Stainless Steel

Power
Manual

Pressure
Class 300

Media
Water, Oil, Gas

Working Temperature
-29C to 425C

Port Size
2 inch to 24 inch

Surface
Anti-corrosive painted / Shot blasted

Shape
Swing type

Application
Oil & Gas, Petrochemical, Water Treatment, Power Plants

Gasket
Spiral Wound Stainless Steel + Graphite

Ends
Raised Face (RF) / RTJ

Body Test Pressure
740 psi (51 bar)

Size Range
DN50 to DN600

Face to Face
ANSI B16.10

End Connection
Flanged (ANSI B16.5)

Design Standard
API 6D / BS 1868

Seat Test Pressure
540 psi (37 bar)

Operation
Non-return / One way flow

Bolting Material
Alloy Steel / Stainless Steel

Disc Material
Forged Steel / Stainless Steel

Body Material
WCB / CF8 / CF8M

Class 300 Swing Check Valve Trade Information

Minimum Order Quantity
5 Units

Supply Ability
200 Units Per Month

Delivery Time
7 Days

About Class 300 Swing Check Valve

Class 300 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.

Reliable Non-Return Operation

The swing check valve ensures reliable non-return or one-way flow in process systems. Its swing-type disc design operates automatically to prevent unwanted reverse flow, protecting pumps and integral equipment. Manufactured to meet stringent API 6D / BS 1868 standards, it is suitable for applications where maintaining directionality of flow is critical.

Durable Materials & High Pressure Rating

Constructed from premium materials such as Carbon Steel (WCB), Stainless Steel (CF8, CF8M), and forged steel discs, the valve offers high resistance to corrosion and mechanical stress. Rated for Class 300 pressure and tested up to 740 psi on the body and 540 psi on the seat, it is designed for durability and safe operation across a wide temperature range (-29C to 425C).

Versatile Applications in Key Industries

Ideal for oil & gas, petrochemical, water treatment, and power generation sectors, the swing check valve provides secure isolation for water, oil, or gas media. Its range in sizes and compatible end connections (RF or RTJ) makes installation straightforward, while anti-corrosive finishes and robust bolting ensure long service life even in challenging environments.

FAQ's of Class 300 Swing Check Valve:

Q: How does a Class 300 Swing Check Valve help prevent backflow in pipelines?

A: This valve features a swing-type disc that automatically closes when reverse flow occurs, preventing backflow and ensuring fluids only move in one direction. This protects critical equipment and maintains the integrity of the system.

Q: What materials are available for the body and disc of the valve?

A: The valve body is available in WCB (carbon steel), CF8, or CF8M (stainless steel), while the disc can be made from forged steel or stainless steel. These material options provide versatility and resilience against corrosion and pressure demands.

Q: When should a swing check valve be chosen over other types of check valves?

A: Swing check valves are preferred in applications with low to moderate velocities and where minimal pressure drop is desirable. They are effective in horizontal installations and suitable for media such as water, oil, and gas in industrial processing plants.

Q: Where can this swing check valve be installed within industrial systems?

A: It can be installed in main pipeline networks, pump outlet lines, and at critical junctions in oil & gas, petrochemical, water treatment, and power plant systems, wherever reliable non-return operation is required.

Q: What is the process for testing the valve's integrity and performance?

A: Each valve undergoes body test pressure at 740 psi and seat test pressure at 540 psi based on stringent industry standards to ensure performance under working conditions. Testing procedures are in accordance with API 6D or BS 1868 norms.

Q: How does the valve's bolted cover and gasket design enhance maintenance and sealing?

A: The bolted cover allows easy access for maintenance, while the spiral wound stainless steel + graphite gasket ensures a reliable, leak-proof seal, even under high pressure and temperature conditions.

Q: What are the main benefits of using this swing check valve in industrial applications?

A: Key benefits include enhanced process safety through non-return operation, compatibility with various media, long-lasting durability due to high-grade materials and anti-corrosive surface, and compliance with international standards for pressure and temperature.

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