Richdel Archives - The Watershed OFFICIAL CONTROLLER MANUALS LIBRARY
Old sprinkler controller has no wire to P but two wires to C - Home - Wyze Forum
TruBlue Irrigation - This week I've been starting to replace a number of these old irrigation relics... these controllers still work but are both over 20+ years old and the new controllers
USED Lawn Genie #R406DLG Lawn Sprinkler Control 6 Zone, Vintage Richdel W/BOX | eBay
100232-H - Irritrol/Richdel Diaphragm Assembly for 204 / 205 Valves — Sprinkler Supply Store