“I was glad to find these Weather*Matic 910 Drain Valves - reliable and what I'd used to use as a professional Contractor.
I'm installing these (excepting for the one under an AVB) in those small valve boxes, set down underground, as open vaults for the Drains.
Sure beats annual "blowouts" even if there's a little more work involved.
Thank You Sprinkler Supply Store !!!”
