Check valve with brass spindle 1"

Product detailed description

This check valve is commonly used in central heating and plumbing systems to prevent reverse flow of water in the main supply line. It is particularly suited for installation before storage water heaters or at the main inlet of a house or small commercial building. The valve ensures that water flows in one direction only, maintaining system integrity and preventing damage from unintended circulation. The brass spindle provides stability and precision in operation, ensuring the internal disc remains centred and responsive to flow changes.

Typical applications include domestic hot water systems, where the valve is installed to protect the main supply from backflow caused by pressure fluctuations or pump failures. It is also suitable for use in irrigation systems and industrial water circuits where unidirectional flow is critical. The compact dimensions and G1 thread make it compatible with standard pipe configurations, allowing for straightforward integration into existing systems without the need for extensive modifications.

Technical parameters

Thread	G1 (1")
Nominal pressure	10 bar (1,0 MPa)
Maximum operating temperature	100 °C
Dimension B (length)	59 mm
Dimension C (height)	43 mm
Net weight	0,262 kg
EAN	5900308736289
Material	Brass
Warranty	2 years
Certification	Declaration of conformity
Code	ZZ-M25
Brand	Hydroland

The nominal pressure rating of 10 bar (1.0 MPa) ensures the valve can handle typical operating pressures in domestic and light commercial water systems. The maximum operating temperature of 100°C makes it suitable for hot water applications, such as those found in central heating and domestic hot water systems. The G1 thread size is a standard metric thread used in plumbing and heating systems across Europe, ensuring compatibility with common pipe fittings and components. The compact dimensions (length 59 mm, height 43 mm) allow for installation in tight spaces, while the net weight of 0.262 kg indicates a lightweight but durable construction.

Installation and connection

Installation of this check valve requires a G1 male or female thread on the adjacent pipe. The valve should be positioned in the pipeline with the flow direction indicated on the body. It is essential to ensure that the valve is installed in the correct orientation to allow for proper operation. A common mistake is reversing the flow direction, which can lead to improper sealing and potential leakage. Before tightening the connections, apply a suitable thread sealant or PTFE tape to the threads to prevent leaks and ensure a secure fit. After installation, check for any signs of leakage by inspecting the connections and monitoring the system under normal operating conditions.

When connecting the valve, ensure that the surrounding piping is clean and free of debris to prevent damage to the internal components. Avoid over-tightening the fittings, as this can cause thread damage or deformation of the valve body. The valve should be installed in a location that allows for easy access for inspection and maintenance. If the valve is part of a larger system, it is important to verify that the overall system pressure and temperature are within the valve's operational limits to avoid premature failure.

Compatibility and accessories

This check valve is compatible with standard G1 threaded fittings and pipe components used in heating and plumbing systems. It is suitable for use with copper, steel, and plastic pipes that have a G1 thread. No additional accessories are required for installation, as the valve is designed for direct connection to the pipeline. However, it is recommended to use a suitable sealing compound or PTFE tape to ensure a leak-free connection. The valve does not require any special tools for installation, making it a practical choice for on-site assembly.

Technical background for designers

The operating principle of this check valve is based on a disc that is held in place by a brass spindle. When water flows in the correct direction, the disc opens smoothly, allowing the flow to pass. In the event of reverse flow, the disc is forced against the seat by the pressure difference, creating a tight seal that prevents backflow. The brass spindle ensures that the disc remains centred, reducing wear and improving the valve's longevity. The material choice of brass provides good corrosion resistance and mechanical strength, making it suitable for use in water systems with varying temperatures and pressures.

The valve is designed to integrate seamlessly into existing plumbing and heating systems. It is particularly effective in applications where the prevention of backflow is critical, such as in systems with storage heaters or where multiple circuits are connected to a common supply line. The maximum operating temperature of 100°C allows for use in hot water systems, while the nominal pressure of 10 bar ensures compatibility with standard domestic and commercial water pressures. The compact size and lightweight design make it ideal for installations where space is limited.

Service and operation

Regular inspection of the valve is recommended to ensure continued reliable operation. Check for signs of wear, corrosion, or leakage at the connections. If the valve is installed in a system that experiences frequent pressure fluctuations, it is advisable to monitor its performance over time. The valve does not require scheduled maintenance, but it should be inspected during routine system checks. If the valve fails to operate correctly, it may need to be replaced. No specific service intervals are provided, but the valve is covered by a two-year warranty from the manufacturer.

During operation, ensure that the system pressure and temperature remain within the valve's specified limits. Avoid subjecting the valve to excessive mechanical stress or vibration, as this can affect its performance. If the valve is removed for inspection or replacement, handle it with care to avoid damaging the internal components. Reinstall it in the correct orientation and ensure that the connections are properly sealed to prevent leaks.

Frequently asked questions

Can this check valve be used in a hot water system?
Yes, the valve is rated for a maximum operating temperature of 100°C, making it suitable for use in hot water systems such as central heating and domestic hot water circuits.

Is the valve compatible with plastic piping?
Yes, the G1 thread allows for connection to plastic pipes that have a matching thread size. Ensure that the pipe and fittings are compatible with the operating conditions of the system.

Can the valve be installed in a vertical position?
Yes, the valve can be installed in either a horizontal or vertical orientation, provided that the flow direction is correct and the connections are properly sealed.

What is the maximum pressure the valve can handle?
The valve is rated for a nominal pressure of 10 bar (1.0 MPa), which is suitable for most domestic and light commercial water systems.