Brass Seco Double Clapper Fire Department 4 Hose Connection Y Siamese Standpipe. The item "Solid Brass Seco Double Clapper 4 Fire Hydrant Hose Connection Dept. Siamese" is in sale since Saturday, May 2, 2020. This item is in the category "Collectibles\Historical Memorabilia\Firefighting & Rescue\Hoses & Nozzles". The seller is "gregger740" and is located in Coopersville, Michigan.