Static Caravan & Lodges Winter Drain Down Valve Kits Fits 3/4" & 1/2" Fast Ship
Static Caravan & Lodges Winter Drain Down Valve Kits Fits 3/4" & 1/2". 1x drain down valve kits. Step6: the heating system must open, and the gas and power is on, and switch to winter mode as the most of boiler have frost protection.