How do you maintain and clean couplings?

• A. Use metal oil on threads.
• B. Hand-tighten with good gaskets; clean threads and swivels with wire brush and warm water.
• C. Use bleach on threads.
• D. Use high pressure spray only.

Answer: (B)

Maintaining and cleaning couplings focuses on keeping sealing surfaces clean and the gasket in good condition so the connection seals reliably under pressure. The recommended approach is to use a good gasket and tighten by hand until snug, which helps prevent leaks without risking crushed gaskets or damaged threads that can come from overtightening. Cleaning the threads and swivels with a wire brush and warm water removes dirt, rust, and debris that would prevent a proper seal or cause binding, while a gentle brush avoids scratching or gouging critical surfaces. After cleaning, dry everything and inspect the gasket for cracks or wear, replacing it if needed. Avoid bleach or harsh chemicals on the threads, as they can corrode metal and degrade seals, and don’t apply oil to the threads, which can attract dirt and contaminate the connection. High-pressure spray can damage seals or force water past the gasket, so use a gentler cleaning approach. This method helps ensure a tight, reliable seal and longer-lasting couplings.