Do Water Hammer Arresters require access panels?
The ‘all stainless steel’ constructed units with internal stainless steel bellows are guaranteed for the life of the piping system. Because of their construction, longevity and years of successful operation, we are comfortable with stating that no access is required. The piston type unit should be accessible or be provided with an access panel. Piston units have moving parts sealed by an o-ring which means at some time in the future, replacements or maintenance will be required. Although, some piston units have life time guarantees and have no access panel requirement, at some point access will be required or they will be left as is in a failed state.
