100 PSI Check Valves
The 100 PSI Check Valves are for the alum output or the discharge from the pump. The 100 PSI is needed to push material out of 500′ of hose. 1/2″ check valves are the most common, but it can also come in 3/8″ and stainless steel.
There are also a set of 100 PSI Check Valves (upper and lower) that connect directly to the Alum Pump which are considered to be upper and lower check valves.
Please specify which you are looking for when placing the order.