I have my third bypass valve coming from them as of today. This is the valve that diverts heater core back to engine vs into the core.

I am not sure why they are failing? Anyone have a guess other than terrible build quality?

1. Its a pinch joint that is o-ringed
2. Leaks when the engine is shut off and heat/psi build.
3. It is away from excessive heat.
4. 160 T stat.
5. Fans come on at 190 off at 180
6. Engine runs at 165-180 depending on the day/heat/load at speed
7. Running slow speeds or sitting it creeps normally and comes down easily with fans.

I see no reason for these to fail?

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