An in-line water hammer arrester comprises a housing connectable at each end to a piping system, a fluid channel disposed within the housing to permit fluid to flow from the piping system through the housing and back into the piping system, a piston and a pressurized chamber. When a pressure spike occurs, the piston is pushed against the pressurized chamber allowing an expanded area for water flow until the pressure spike is dissipated and the piston returns to its resting position. When used with flexible hoses and tubing typically found with household appliance water supply lines, the in-line arrester is easily installed by a crimping or clamping type connector and takes up little space.

An in-line water hammer arrester comprises a housing connectable at each end to a piping system, a fluid channel disposed within the housing to permit fluid to flow from the piping system through the housing and back into the piping system, a piston and a pressurized chamber. When a pressure spike occurs, the piston is pushed against the pressurized chamber allowing an expanded area for water flow until the pressure spike is dissipated and the piston returns to its resting position. When used with flexible hoses and tubing typically found with household appliance water supply lines, the in-line arrester is easily installed by a crimping or clamping type connector and takes up little space.

An outlet pipe includes a discharge pipe having an inlet end for receiving fluid and an outlet end for passing fluid, a connector attached to the discharge pipe to cover the inlet end, and a wear module arranged in a cavity limited by the discharge pipe and the connector. The connector has an interface surface for attachment to an outlet face of a valve providing the fluid, and the wear module has a conduit so that at least the discharge pipe and the conduit mutually define a flow channel passing fluid from the interface surface to the outlet end.

An outlet pipe includes a discharge pipe having an inlet end for receiving fluid and an outlet end for passing fluid, a connector attached to the discharge pipe to cover the inlet end, and a wear module arranged in a cavity limited by the discharge pipe and the connector. The connector has an interface surface for attachment to an outlet face of a valve providing the fluid, and the wear module has a conduit so that at least the discharge pipe and the conduit mutually define a flow channel passing fluid from the interface surface to the outlet end.

A novel passive surge water hammer protection system, which is useful for Automated Surge Water-Hammer Transients control, protection and for preventing water hammer transients from occurring in a water pipeline & pumping plant. The present SCT invention creates two differential HGLs at same junction/node, Upstream level at (16) and Downstream level at (10) inside the circular vertical loop (4)=(1,16,9,10,11,2) an unequal column separation, vertical differential (16,10) is developed, this simple passive method to force the minimum negative pressure from below the pipe invert level to minimum positive pressure (16,10) which is well above the pipe invert level (HGL-3).

A novel passive surge water hammer protection system, which is useful for Automated Surge Water-Hammer Transients control, protection and for preventing water hammer transients from occurring in a water pipeline & pumping plant. The present SCT invention creates two differential HGLs at same junction/node, Upstream level at (16) and Downstream level at (10) inside the circular vertical loop (4)=(1,16,9,10,11,2) an unequal column separation, vertical differential (16,10) is developed, this simple passive method to force the minimum negative pressure from below the pipe invert level to minimum positive pressure (16,10) which is well above the pipe invert level (HGL-3).