Help with RO parts

[xcaret]

Hi

Found a box with some RO parts but have no clue about what these are for; one is obvious a pressure switch and another a pressure gauge but the black boxes I'm clueless.
Also, are RO membranes built-in flow restrictor?

Thanks

 

[Marc]

Looks like a solenoid valve and a pressure switch.

Pressure switch triggers the solenoid valve to open or close. Not sure how it's set up just from the picture.

Membranes do not have a built in flow restrictor. It's usually a capillary flow restrictor or an inline flow restrictor that's installed after the membrane housing.


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