Softener causes water hammer or banging pipes during regeneration

Safety: High water pressure can be hazardous. If unsure, consult a plumber.

Steps:

• Measure pressure: Use a pressure gauge on a nearby faucet to check static water pressure. If above 80 psi (5.5 bar), install or adjust a pressure-reducing valve.
• Secure piping: Ensure pipes near the softener are properly strapped and supported to reduce movement.
• Install hammer arrestor: Consider adding a water hammer arrestor near the softener or main line to absorb shock.

Resolution: If noise persists, consult a plumber to evaluate the plumbing layout. The softener valve itself is usually not defective but may accentuate existing water hammer issues.