Brass Extension Nipple kfa² 1/2" (20 mm) model 170-202-98

Brass extension nipple kfa² 1/2" (20 mm) model 170-202-98 is a threaded plumbing adapter designed to extend or connect 1/2-inch (20 mm) pipe fittings. Manufactured from brass, this coupling provides corrosion-resistant mechanical strength and reliable thread engagement for household and light commercial water systems, radiators, valves and general repair tasks.

Advantages

The brass construction ensures durability and resistance to corrosion in typical potable water and heating environments. Precision-cut threads provide a tight mechanical fit that minimizes the risk of leaks when paired with appropriate sealing materials. Its compact 1/2" (20 mm) size allows straightforward integration into existing installations and enables quick on-site modifications or repairs without the need for specialized tools.

Suitable for

• Extending or connecting 1/2" (20 mm) pipe fittings in domestic plumbing
• Connecting radiators, valves and shut-off fittings
• Repairing or modifying water supply lines in kitchens and bathrooms
• Light commercial plumbing applications requiring threaded brass connectors

Key specifications

• Material: Brass (corrosion-resistant)
• Threaded connection: 1/2" (20 mm) standard plumbing thread
• Shape: Straight extension nipple
• Intended use: Mechanical threaded join for water and heating systems
• Typical operating environment: Domestic and light commercial potable water and heating installations

How to use

Ensure mating threads are clean and free of debris before installation. Apply an appropriate sealing method such as PTFE tape or liquid thread sealant to the male threads to achieve a watertight connection. Screw the extension nipple into the female fitting by hand until snug, then tighten with an appropriate wrench to the manufacturer-recommended torque or until the joint is secure without over-tightening. After installation, pressurize the system and inspect the joint for leaks; if leakage occurs, depressurize, disassemble and reapply sealant or retighten as needed.

Usage recommendations

Use appropriate thread sealants compatible with potable water systems and avoid excessive torque to prevent thread damage. For installations in aggressive water conditions or where electrolytic corrosion is possible, consider isolating dissimilar metals with suitable fittings or dielectric unions. Follow local plumbing codes and safety practices when integrating into water or heating systems.