Water mixing into soap tank

[TCBinTX]

Hoping someone smart can tell me why water is draining into my soap tank. Seems to happen when I turn the soap valve higher than 2. What am I doing wrong?

[mwpws]

bad check valve on your soap line

[dcbrock]

Yup, mine did the same thing twice, ruined 20 gallons of SH. Those check valves fail just looking at them, cheap crap.

[TCBinTX]

Thank you both, gentlemen,

[Kentucky1234]

Check valve…