Drain water ball valve 3/4"

Product detailed description

Drain water ball valves are essential components in central heating systems, particularly in installations where larger circuits require efficient draining. This valve is commonly used in boiler rooms, larger radiator circuits, and main distribution branches. It allows for controlled and reliable draining of water from the system during maintenance or seasonal shutdowns. The valve is designed to handle the thermal and hydraulic conditions typical of central heating systems, ensuring long-term performance and ease of operation.

Installers working on residential or commercial heating systems often encounter the need to drain large sections of the system. The Hydroland Z.SP-20 is specifically engineered for such applications, where a higher flow rate is required to quickly and efficiently remove water. The valve is suitable for use in systems operating under normal central heating conditions, with water as the working medium and temperatures up to 120°C.

Technical parameters

Size	DN20, G3/4
Ball diameter	14 mm
Maximum pressure	1 MPa (10 bar)
Hydraulic strength	2.5 ± 0.1 MPa
Maximum operating temperature	120 °C
Working medium	water from central heating
Body length	75.5 mm
Weight	0.200 kg
Material	brass, chrome-plated ball, PTFE
EAN	5900308730782
Warranty	2 years
Code	Z.SP-20
Brand	Hydroland

The technical parameters of the Z.SP-20 are crucial for proper sizing and selection. The DN20 size and G3/4 thread allow for integration into standard central heating piping. The 14 mm ball diameter ensures a larger flow cross-section compared to smaller valves, making it suitable for larger circuits. The maximum operating pressure of 1 MPa (10 bar) and hydraulic strength of 2.5 ± 0.1 MPa indicate the valve's ability to withstand typical system pressures and occasional surges. The maximum operating temperature of 120°C ensures compatibility with central heating water temperatures.

Installation and connection

To install the Z.SP-20, ensure the pipeline is clean and free from debris. The valve is connected using a G3/4 thread, which requires a compatible female thread on the pipe. Apply a suitable thread sealant to prevent leaks. The valve should be installed in a position that allows for easy access during operation and maintenance. Ensure the valve is aligned with the pipeline to avoid stress on the connections. Common installation mistakes include incorrect thread orientation, failure to use a sealing compound, and installing the valve in a location that restricts access. Always verify the direction of flow and ensure the valve is fully open during installation to prevent damage to the internal components. After installation, perform a pressure test to confirm the integrity of the connections.

Compatibility and accessories

The Z.SP-20 is compatible with standard central heating systems using copper or steel piping with G3/4 threads. It is typically used in conjunction with other drain valves, isolation valves, and pressure relief devices. For larger installations, it may be necessary to use multiple valves to ensure complete draining of the system. No specific accessories are required for the operation of this valve, but it is recommended to have a set of standard plumbing tools for installation and maintenance. Related products include other drain ball valves of different sizes and isolation valves for system segmentation.

Technical background for designers

The Z.SP-20 operates on the principle of a ball valve, where a spherical disc with a bore is used to control the flow of water. The ball is seated between two PTFE seals, which provide a tight closure when the valve is closed. The ball is made of chrome-plated brass, which offers resistance to corrosion and wear. The PTFE material ensures a smooth operation and a reliable seal. The valve is integrated into the central heating system as a draining point for larger circuits. The material properties of the components ensure compatibility with the thermal and hydraulic conditions of the system. The service life and efficiency of the valve are influenced by the quality of installation, the operating conditions, and regular maintenance. The valve is designed for use with water from central heating systems and is not suitable for other media.

Service and operation

The Z.SP-20 requires minimal maintenance due to its robust design and high-quality materials. Regular checks should be performed to ensure the valve operates smoothly and remains leak-free. The compression nut should be inspected for tightness and adjusted if necessary. No specific service intervals are required, but it is recommended to perform a visual inspection during routine system maintenance. During operation, the valve should be operated fully open or fully closed to avoid partial seating, which can lead to wear and leakage. If the valve becomes difficult to operate, it may indicate the need for cleaning or lubrication of the stem. Always ensure the system is depressurised before performing any maintenance on the valve.

Frequently asked questions

Can the Z.SP-20 be used with central heating water at 120°C?
Yes, the valve is designed for use with central heating water at a maximum operating temperature of 120°C, as specified in the technical parameters.

Is the Z.SP-20 suitable for larger radiator circuits?
Yes, the valve is specifically designed for larger circuits, including radiator circuits, where a higher flow rate is required for efficient draining.

Can the Z.SP-20 be connected to a steel pipe with a G3/4 thread?
Yes, the valve is equipped with a G3/4 thread, making it compatible with steel pipes that have a matching female thread.

Does the Z.SP-20 require a sealing compound during installation?
Yes, it is recommended to use a suitable sealing compound on the thread to ensure a leak-free connection and prevent future leaks.