. Reliable vacuum and vacu-vapor heating equipment . A proper sizeStrainer with checkvalve is furnishedwith all RELIABLEElectric Air Line Out-fits. It is used toprevent foreign mat-ter from entering thevacuum pump, and tocatch any rust, etc.,which often accumu-lates in the system be-tween heating check valve automatically prevents air gettingback into system through pump. The globe valve atthe bottom of Strainer is furnished. The Strainer is very durable. The body is made ofheavy cast iron; the strainer inside is heavy brass, rein-forced by a perforated bronze pla
. Reliable vacuum and vacu-vapor heating equipment . A proper sizeStrainer with checkvalve is furnishedwith all RELIABLEElectric Air Line Out-fits. It is used toprevent foreign mat-ter from entering thevacuum pump, and tocatch any rust, etc.,which often accumu-lates in the system be-tween heating check valve automatically prevents air gettingback into system through pump. The globe valve atthe bottom of Strainer is furnished. The Strainer is very durable. The body is made ofheavy cast iron; the strainer inside is heavy brass, rein-forced by a perforated bronze plate. Note:—No. 2249 Strainer is furnished with Outfits No. 1279, 111and 112, No. 2259 with No. 113 Outfit, No. 2269 with Outfit No. 114 andNo. 2279 {shown on page 45) with No. 116 Outfit. EXPANSION TANK An Expansion Tank of proper size is always furnishedwith RELIABLE Electric Outfits to hold a steady vacuumin a heating system. The vacuum created in the ExpansionTank is often sufficient to keep a system free from air forsome time, without operation of the electric
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