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914World.com _ 914World Garage _ Windshield Washer Check valves
Posted by: jim_hoyland Jan 3 2021, 04:11 PM
If the squirter check valve is unidirectional, should I be able to blow air from one end ?
I got a new valve, can’t blow air through eith end... 
Posted by: BillC Jan 3 2021, 04:58 PM
The check valve should have a directional arrow molded on it, so you know the direction in which to install it.
Because it is a spring-loaded valve, you may not be able to generate enough pressure by just blowing in it. If you have a hand pump, you should be able to test it -- it should only take a few psi to open. Or, if you have a vacuum pump, attach it to the outlet and try drawing a vacuum.
Posted by: bbrock Jan 3 2021, 05:27 PM
QUOTE(BillC @ Jan 3 2021, 03:58 PM) 
The check valve should have a directional arrow molded on it, so you know the direction in which to install it.
Because it is a spring-loaded valve, you may not be able to generate enough pressure by just blowing in it. If you have a hand pump, you should be able to test it -- it should only take a few psi to open. Or, if you have a vacuum pump, attach it to the outlet and try drawing a vacuum.
Just went through this last weekend. I could not blow through it in the direction of the arrow but was able to with ~20 psi of compressed air. Thought my lungs were stronger than the are 
Posted by: jim_hoyland Jan 3 2021, 05:39 PM
Thanks
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