Ball drain valve with coupling and cap 3/4" kfa² 705-010-20

Ball drain valve with coupling and cap 3/4" kfa² 705-010-20 is a compact manual drain and shut-off fitting designed for plumbing systems. The valve uses a ball mechanism to provide a straightforward, reliable flow control and sealing function. With a standard 3/4" threaded connection and a protective cap on the coupling, it is intended for controlled draining and maintenance tasks in water installations, heating systems, boilers and radiators where a compact drainage point and leak-tight performance are required.

Advantages

The ball mechanism offers low-resistance flow and positive shut-off, reducing the risk of drips after closure. The included coupling simplifies connection to hoses or temporary discharge lines, while the protective cap prevents contamination and accidental opening when the valve is not in use. Manual operation requires no power source and allows quick intervention for draining, purging or isolating sections of a system. The compact construction facilitates installation in confined spaces and makes routine maintenance easier.

Suitable for

• Draining and venting domestic water lines
• Servicing boilers, radiators and heat exchangers
• Temporary connection to hoses for system flushing
• Isolating small sections of plumbing for repair or replacement

Key specifications

• Connection size: 3/4" threaded inlet/outlet
• Operating type: manual ball valve
• Includes coupling for hose connection and protective cap
• Application: cold and hot water plumbing, heating system drainage
• Compact body suitable for tight installation spaces

How to use

Install the valve into the plumbing system at the desired drainage or service point using the standard 3/4" threaded connection. Before starting, ensure the system pressure is reduced and water supply is isolated according to local safety practices. To open, turn the valve handle to the open position to allow controlled drainage through the coupling; to close, return the handle to the closed position until the ball seats and flow stops. Attach a hose to the coupling when directing drain water to a safe disposal point and secure the protective cap when the valve is not in use to prevent contamination.

Usage recommendations

Use the valve for routine draining and maintenance only within the pressure and temperature limits of the installation. Avoid using excessive force on the handle and check seals and connections periodically for wear. If freezing temperatures are expected, fully drain and protect the valve and attached hoses to prevent damage. For installations in aggressive environments or where specific approvals are required, verify material compatibility and applicable regulations before use.