When to use a sanitary check valve?
 

Stainless Steel Sanitary Check valves are typically installed to prevent the reversal of flow in a piping system where pumps or filters are installed.  

Sometimes sanitary check valves are used to maintain fluid and pressure within sections of a piping system.  

An example of this would be to help maintain the prime within a pump. Stainless Steel Check valves also help protect all piping components from 

excessive water hammer during pump start-up or initial filling of the pipeline.

are four types of sanitary check valves:

Ball check valves: used for non-viscous and clean fluids where there will be some system backpressure (≥2 PSI) to ensure proper operation.

Y Ball check valves: used for dirtier fluids and fluids having higher viscosities.  Refer to models Sanitary Y-Ball Check Valve(MB45YBCV150).

Air Blow check valves: are used for larger piping systems for higher flow rates.  Refer to models Sanitary air blow check valves(MABCV150T).

Air Relief check valves: are also used for larger piping systems and high flow rates, especially when there are space restrictions.
 

Some stainless steel check valves are available with a spring assist, for applications that have low backpressure, 

dirtier fluids and for applications that benefit from quicker closing. 

Maxpure's design advantage is an all non-alloy construction; for the models that use a spring, 

the material of construction would be either ss304 or ss316L.

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