Original oil and gas trade magazine vintage ad for MUELLER COMPANY of Decatur, IL. Muller. Make High Pressure Hot Taps Safely! Connections to high pressure oil, gas, water or steam lines, pressure vessels and storage tanks are made quickly and easily. Pictured is a DH-2 Machine, H-17145 Completion Machine, No-Blo Curb Valve Tee, Save-A-Valve Drilling Nipple, No-Blo Service Tee, and No-Blo Valve Tee. Unique 1955 old oilfield petroleum industry equipment magazine advertisement. (The actual advertisement is a clean, off-white color, not a pinkish tone in the image, which is a scanner error.) On the reverse side is an ad for W-K-M MANUFACTURING COMPANY, INC. of Houston, TX. and Los Angeles, CA. A Subsidiary of ACF Industries. Whether You Pig or Blowdown W-K-M Through -Conduit Valves are Your Safest Investment. Through-Conduit Valves, Venturi Valves, and Model Q Valves. Old 1955 petroleum industry advertisement.