Brass All Copper Check Valve in Nine Sizes with Horizontal or Vertical Configuration

This all copper check valve is engineered for straightforward integration into water, heating, and other fluid systems requiring reliable one-way flow control. Its primary function is to prevent backflow, safeguarding against potential contamination or damage to pumps and other equipment. Available in a comprehensive range of nine specific sizes – from the smaller DN15 (4 points) and DN20 (6 points) up to the larger DN100 (4 inch) – it is designed to match a wide array of pipe diameters commonly found in domestic and light commercial settings. The brass construction provides a practical balance of durability and corrosion resistance for typical applications, while the threaded connection ensures a secure and sealed installation without the need for specialist tools.

Features and Construction

This valve's design prioritises functional compatibility and installation flexibility. The core construction from brass allows it to perform consistently in environments with potable water and in central heating systems where corrosion resistance is a practical benefit. The availability of two distinct body configurations addresses different spatial and piping layout requirements on-site.

Material and Build

The valve body is manufactured from brass, a copper-zinc alloy known for its good machinability and resistance to corrosion from water and many common chemicals. This material choice makes the valve suitable for use in standard plumbing, heating, and some irrigation applications. The internal mechanism is a simple check valve design, allowing flow in one direction only and automatically closing to block reverse flow, which requires no external power or control to operate.

Size and Practical Fit

The product is offered in a precise selection of sizes to ensure a correct fit for various pipework. The sizing uses both metric (DN) and imperial inch classifications for clarity: DN15 (4 points), DN20 (6 points), DN25 (1 inch), DN32 (1.2 inch), DN40 (1.5 inch), DN50 (2 inch), DN65 (2.5 inch), DN80 (3 inch), and DN100 (4 inch). It is essential to select the valve size that corresponds exactly to the outer diameter of your existing pipes to guarantee a proper seal and avoid leaks. The threaded connection on both ends is designed to screw directly onto corresponding male or female pipe threads.

Uses and Placement

This check valve serves a fundamental protective role in numerous fluid systems. Its installation is a standard practice to maintain system integrity, prevent siphoning, and protect sensitive components downstream. The choice between the horizontal and vertical model variants allows installers to adapt to the physical constraints and orientation of the pipe run.

Event or Professional Use

In commercial or professional settings, such as in irrigation systems, boiler feed lines, or industrial process water lines, these valves are used to isolate sections of a system and prevent backflow contamination. The availability of larger sizes like DN80 (3 inch) and DN100 (4 inch) caters to these higher flow-rate applications. The threaded connection facilitates maintenance and replacement as part of routine system servicing.

Everyday Home Use

For domestic plumbing, a common application is installation on the outlet side of a pump (like a sump pump or boosting pump) to prevent water from draining back into the pump when it switches off, which can cause water hammer and unnecessary pump cycling. It is also used in central heating systems to maintain correct circulation direction. The smaller sizes, such as DN15 (4 points) and DN20 (6 points), are typically used for these household applications.

Benefits and Buying Value

The value of this product lies in its specific sizing, material suitability, and configuration options, which together provide a targeted solution for flow control needs. It avoids the complexity of more expensive, actuated valves by offering a simple, automatic, and reliable mechanical function.

Reuse and Low Maintenance

As a mechanical device with no internal wearing parts under normal conditions, the check valve requires minimal ongoing maintenance once correctly installed. Its brass construction is chosen for its longevity in typical water environments. If system changes are required, the valve can be unscrewed and reused elsewhere, provided the thread size matches the new application.

Why Choose This Product

This valve is selected for applications where precise size matching is critical and where installers need the flexibility of a horizontal or vertical body style. The clear model naming convention (e.g., DN25 1 inch) removes guesswork when ordering. Its all-copper/brass build is a practical choice for systems where metallic materials are specified or preferred over plastics, particularly in higher temperature or pressure scenarios common in heating systems.