I have the 1/4" poly x 1/4" npt fittings going from the manifolds out to the bays...I was referring to the "Inlets" to the manifolds. I ordered 3/8" poly x 1/4" NPT fittings to go from the flojet to the manifolds. I figured since I have (4) 1/4" poly lines coming off each solenoid manifold, then I would think you would need 3/8" poly supplying the manifolds.
Maybe I misunderstood your post when you referred to "Supply Tubing": " Could likely turn down the psi if the supply tubing were 3/8" but those "push-to-connect" fittings won't fit on my solenoid manifold blocks."
Beings how the 3/8 fitting would be on the end of the solenoid, then there shouldn't be any interference to contend with...
Maybe I misunderstood your post when you referred to "Supply Tubing": " Could likely turn down the psi if the supply tubing were 3/8" but those "push-to-connect" fittings won't fit on my solenoid manifold blocks."
Beings how the 3/8 fitting would be on the end of the solenoid, then there shouldn't be any interference to contend with...
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