Ball valve 1/2" with pressure nut

Product detailed description

This ball valve is commonly used in residential and commercial buildings for regulating flow in water supply and central heating systems. It is typically installed at points requiring frequent manual shut-off, such as at pipe junctions, near radiators, or at the inlet of circulation pumps. The compact design allows for easy integration into tight spaces, making it suitable for both new installations and retrofit projects.

The pressure nut ensures a secure connection and facilitates quick installation. The inclusion of two wing nuts (coloured blue and red) provides clear visual indication of open and closed positions, which is especially useful in systems with multiple valves. The brass construction offers good corrosion resistance, making it appropriate for use with potable water and heated systems.

Technical parameters

EAN	5903887101349
Code	ZKWSP-15WW

The nominal pressure of 25 bar indicates the maximum pressure the valve can safely handle under normal operating conditions. This value is essential when selecting components for high-pressure applications. The 1/2 inch thread size ensures compatibility with standard piping in domestic and light commercial systems. These parameters help ensure proper system performance and longevity.

Installation and connection

To install the valve, first ensure the system is depressurised and drained. Align the 1/2 inch male thread with the corresponding female thread on the pipe or fitting. Apply a small amount of thread sealant if required by local standards. Tighten the connection using an appropriate wrench, ensuring not to overtighten and damage the threads. After installation, verify that the valve operates smoothly by rotating the pressure nut and checking for leaks. Common installation errors include cross-threading during assembly and failure to align the valve correctly within the system layout.

Compatibility and accessories

This valve is compatible with standard brass and steel piping systems designed for water supply and heating. It is suitable for use with copper, PPR, and steel pipes that have 1/2 inch female threads. No additional accessories are included with the valve. For complete installation, standard pipe fittings and sealing compounds may need to be sourced separately.

Technical background for designers

The ball valve operates via a pivoting ball inside the body, which blocks or allows flow depending on its position. The brass body provides good mechanical strength and thermal conductivity, making it suitable for both cold and hot water applications. The pressure nut enhances sealing and simplifies manual operation. When integrating into a system, consider the overall pressure drop and ensure that the valve is positioned for easy access during maintenance. The service life of the valve depends on the quality of installation, regular inspection for leaks, and the absence of abrasive media in the system.

Service and operation

Routine checks should include inspecting the valve for signs of leakage around the pressure nut and ensuring smooth rotation of the wing nuts. If resistance is encountered during operation, disassemble the valve carefully and clean the internal components. Reassembly requires care to avoid damaging the sealing surfaces. No specific service intervals are provided in the product documentation. Always ensure the system is depressurised before performing any maintenance tasks.

Frequently asked questions

Can this ball valve be used in a central heating system?
Yes, the valve is suitable for central heating systems due to its nominal pressure rating and brass construction.

Is the pressure nut adjustable for different pipe thicknesses?
No, the pressure nut is fixed and designed for standard pipe connections with 1/2 inch threading.

Are the wing nuts colour-coded for identification?
Yes, the valve includes one blue and one red wing nut for visual indication of open and closed positions.

Can this valve be used with plastic piping systems?
Yes, provided the plastic piping has a 1/2 inch female thread compatible with the valve’s male thread.