1-1/4" Pressure Relief Valve Fitting For Inline Use, 1/2" NPT

This valve should be used in conjunction with the 128-5000 pop off valve.

316L Stainless Steel Quick Engine Flush Connector

Our engineering team has developed this attractive easy to use quick connect thru-hull flushing system. These 316L stainless steel flushing thru-hulls allow the quick connection of a garden hose to this fitting in mere seconds. While the opposite end of the thru-hull features a 1/2" NPT female connection that can be connected into the inlet side of your cooling system or sea strainer. When the garden hose is removed this unit looks like a simple thru-hull yet has a spring loaded internal check valve.

Quick Engine Flushing Adapter Replacement

Replacement flushing adapter for 620-913300.

Adjustable  Water Pressure Relief Valve 1/2" NPT

This spring loaded adjustable water pressure relief valve is perfect for bleeding off excess engine water pressure caused by pressure spikes in an engines cooling system.  water flows freely when water pressure exceeds the set designated pressure.  Keep high pressure spikes from damaging your engine.

Adjustable from 7-25 PSI.