 Windshield Washer Check valves, Question about flow |
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| jim_hoyland |
 Jan 3 2021, 04:11 PM
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#1
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Get that VIN ?  Group: Members Posts: 9,321 Joined: 1-May 03 From: Sunset Beach, CA Member No.: 643 Region Association: Southern California 
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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... (IMG:style_emoticons/default/sad.gif) |
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| BillC |
Jan 3 2021, 04:58 PM
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#2
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Senior Member Group: Members Posts: 548 Joined: 24-April 15 From: Silver Spring, MD Member No.: 18,667 Region Association: MidAtlantic Region
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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. |
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| bbrock |
Jan 3 2021, 05:27 PM
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#3
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914 Guru Group: Members Posts: 5,269 Joined: 17-February 17 From: Montana Member No.: 20,845 Region Association: Rocky Mountains
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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. (IMG:style_emoticons/default/agree.gif) 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 (IMG:style_emoticons/default/smile.gif) |
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| jim_hoyland |
Jan 3 2021, 05:39 PM
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#4
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Get that VIN ? Group: Members Posts: 9,321 Joined: 1-May 03 From: Sunset Beach, CA Member No.: 643 Region Association: Southern California
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Thanks (IMG:style_emoticons/default/smile.gif) (IMG:style_emoticons/default/smile.gif)
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