Update: The check valve works and is installed properly. I get water and air to check valve and passed check vavle with unhooked from outlet line. However nothing moves passed check valve seems like another valve somewhere. Or blockage.
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TV: 2014 Ram 1500 QC 5.7L 8spd 3:21 gears
1st camper: 2001 Aero Cub C19
Current Camper: 2020 Bullet 261rbs
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