. Reliable vacuum and vacu-vapor heating equipment . 22792289 Note; — No. 2249 Strainer is furnished with Outfit , No. 2279 with Outfits No. 122 and 128, and No. 2289with No. 124 and 125 Outfits. The No. 2249 Strainer isshown on page 21. EXPANSION TANK An Expansion Tank is used with RELIABLE ReturnLine Outfits to hold a steady vacuum in the heating vacuum in Expansion Tank assists the pump to drawair and condensation from the system. This insuresadditional economy. As the Automatic Electric Switch and Vacuum Con-troller is connected to Expansion Tank, a steady vacuumis always
. Reliable vacuum and vacu-vapor heating equipment . 22792289 Note; — No. 2249 Strainer is furnished with Outfit , No. 2279 with Outfits No. 122 and 128, and No. 2289with No. 124 and 125 Outfits. The No. 2249 Strainer isshown on page 21. EXPANSION TANK An Expansion Tank is used with RELIABLE ReturnLine Outfits to hold a steady vacuum in the heating vacuum in Expansion Tank assists the pump to drawair and condensation from the system. This insuresadditional economy. As the Automatic Electric Switch and Vacuum Con-troller is connected to Expansion Tank, a steady vacuumis always on the Vacuum Controller, which assures perfectoperation of Automatic Electric Switch—the vacuum pumpcan operate only when necessary. An Expansion Tank of proper size is always includedwith RELIABLE Return Line Outfits. Forty-Five THE RELIABLE RETURN LINE THE VACU-TRAPSWHAT THEY ARE—HOW THEY OPERATE PHOSPHOR BRONZE SPRING prevents vibration of thermal mem-ber. The Vacu-Trap is noiseless. BODY AND COVER of Vacu-Trap areheavy bronze RENEWABLE BRASS BALL VALVE which, with knuckle ball joint at top, al-ways insures positive seating of thermalmember. The Vacu-Trap prevents escapeof steam. !\ ROUNDED BRASS SEAT-Dirt cannotaccumulate on it:_ Seat is renewable. THERMAL MEMBER —heavy phosphor bronze, filled with volatilefluid. Expands and closes Vacu-Trap when steam reaches it. Whensteam condenses in the radiator,thermal member contracts, theVacu-Trap opens and condensationand air passes into the returnpiping. Little Wonder Vacu-Trap Made only in XA inch size The Vacu-Traps are heavy bronze thermo-static valves which automatically keep a heatingsystem free from air, and drain the radiators orcoils of condensation, without loss or escape ofsteam. One Vacu-Trap is placed on return end ofeach radiator or coil. The Vacu-Trap allows airto be drawn out of radiators, supply piping andboiler, but when steam reaches it, its thermalmember expands, closing Vacu-Trap instantly.
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