Product Info Catalog Plumbing Valves Sill Cocks Sillcock, Anti-Siphon, Frost-Free, Quarter-Turn, 1/2 x 10-In. Sillcock, Anti-Siphon, Frost-Free, Quarter-Turn, 1/2 x 10-In. Request a Quote UPC: 32888149083 SKU: 566754 Model Number: 104-827HC 1/2" x 10", frost free anti-siphon sillcock, 1/2" male & 1/2" solder, quarter turn operation.