There's two valves I'd like to plumb horizontally.
Can I achieve full syphon with a gate valve on a Herbie main drain, if the gate valve is plumbed horizontally?
Will a Y-style check valve (pictured) still work properly, if plumbed horizontally?
I believe this is also called a Wye Check Valve...
As pictured I have two Wye check valves that were assembled for my returns. 90deg elbows at the top for connecting to bulkhead, Sch80 slip-slip union glued, the Wye check valve, a MPT x Slip adapter, an FPT x Slip adapter, then pipe down to half a union. The lower half of the assembly may or may...