Does anybody have the manual or knows what the acceptable pressure drop through the inverted system in the upright position (not inverted) is. Mine is about 20 psi lower through the system than without it. I know this is excessive. I have pulled the valve apart and it looks fine to me. Any help would be appreciated. This is on a 20 year old plane that has not had this problem in the past.
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pressure drop through Christen valve
- Thread starter resojames
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darylat8750
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