Cast Iron Check Valves are mechanical devices used to control the flow of fluids, typically in pipelines and plumbing systems. They are constructed from durable cast iron, making them well-suited for applications that require strength and resistance to corrosion. These valves operate based on the principle of allowing fluid to flow in one direction while preventing back-flow in the opposite direction. Cast iron check valves are commonly used in water supply, wastewater, and industrial systems to prevent the reversal of fluid flow, ensuring efficient and reliable operation while minimising the risk of contamination or damage to the system. Their robust construction and dependable performance make them a popular choice for various fluid control applications.

Key features and benefits of Cast Iron Check Valves.

Key Features

Cast iron check valves are known for their robust and long-lasting construction, making them highly resistant to wear, corrosion, and damage from harsh operating conditions. This durability ensures a longer service life.

Key Features

These valves are designed to allow fluid to flow in one direction while preventing reverse flow. This critical function safeguards pipelines and systems from potential contamination or damage caused by back-flow.

Key Features

Cast iron check valves typically require minimal maintenance, which reduces the overall cost of ownership. Their design simplifies operation, and they are often self-actuating, eliminating the need for external power sources.

Key Features

These valves are versatile and find applications in a wide range of industries, including water supply, wastewater treatment, HVAC systems, and industrial processes, thanks to their adaptability and reliability.

Key Features

Cast iron check valves are often more cost-effective than other materials while still providing excellent performance. Their long lifespan and minimal maintenance needs contribute to cost savings over time.

Key Features

Cast iron check valves are available in various types, including swing check, lift check, and dual-plate check valves, as well as different sizes to accommodate diverse system requirements. This variety allows for tailored solutions in different applications.

The AV-5170 / 5170LP are robust and versatile valves designed for controlling fluid flow in pipelines and systems. Constructed from durable cast iron, they offer exceptional strength and resistance to corrosion, making them suitable for a wide range of applications. The PN16 flanged connection ensures compatibility with pipelines operating at pressures up to 16 bar. The EPDM seat, known for its excellent sealing properties and resistance to a variety of fluids, enhances the valves' performance and reliability. This combination of materials and design features makes these valves a dependable choice for preventing backflow and ensuring the smooth and efficient operation of fluid systems.

Size Range:	1 1/2" to 12"
Temperature Range:	-10°C to 120°C
Pressure Rating:	PN16
End Connection:	Flanged PN16
Body Materials:	Cast Iron Body & Swing, EPDM Seat

The AV-5172 / 5172LP is a vigorous and versatile fluid control device specifically designed for applications requiring a secure, tight seal. The cast iron construction provides exceptional durability and resistance to wear and corrosion, making it suitable for a wide range of industries. The PN16 flanged connection ensures compatibility with pipelines and systems designed for this pressure rating. The stainless steel seat enhances the valve's sealing capabilities, preventing backflow effectively while providing longevity and reliability. This valve is an ideal choice for applications where a strong, corrosion-resistant, and dependable check valve with PN16 flanged connections and stainless steel seating is essential.

Size Range:	1 1/2" to 12"
Temperature Range:	-10°C to 300°C
Pressure Rating:	PN16
End Connection:	Flanged PN16
Body Materials:	Cast Iron Body & Swing, Stainless Steel Seat

A cast iron check valve is a non-return valve designed to allow fluid to flow in one direction only, automatically preventing backflow and protecting pumps, pipelines, and equipment.

Check valves use a disc, ball, or swing mechanism that opens with forward flow and closes when reverse flow occurs, ensuring media moves in only one direction without manual operation.

Cast iron check valves are durable, cost-effective, and resistant to wear, making them ideal for water, air, and non-corrosive fluid systems. They also provide excellent flow capacity with minimal pressure drop.

They’re widely used in water treatment plants, HVAC systems, irrigation, fire protection, and industrial piping where non-return flow is essential.

Typical cast iron check valves are rated up to PN16 or ANSI 125, depending on size and manufacturer specifications.

Yes, most cast iron check valves can be installed in horizontal or vertical lines, provided that flow is in the correct direction as indicated by the arrow on the body.

Common types include swing check valves, dual plate wafer check valves, and ball check valves, each suited for different flow conditions and applications.

Standard cast iron check valves are suitable for non-corrosive liquids and gases. For corrosive or aggressive fluids, bronze, stainless steel, or ductile iron valves are recommended instead.

Most models operate effectively between –10 °C and +200 °C, depending on pressure and internal sealing materials.

Select a valve that matches your pipe size and flow rate, ensuring it meets the system’s pressure, temperature, and medium compatibility requirements.

Maintenance is minimal — periodic inspection for debris or wear on the disc and seat helps ensure long-term reliable performance.

Yes, cast iron check valves are available in both flanged (PN16/ANSI 125) and wafer-style designs for space-saving installations.

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