Document pmwpeNYq8B8RwVE3M1BQYK9mk

Hoffman Specialty Co., Inc. Specialties, Heating HOFFMAN "CONTROLLED HEAT" EQUIPMENT--(Continued) TYPICAL INSTALLATIONS Hoffman Specialty Co., Inc. Specialties, Heating HOFFMAN "CONTROLLED HEAT" EQUIPMENT--(Continued) TYPICAL INSTALLATIONS \ Fig. I shows application of No. 8 and 9 Hoffman Valves for venting and dripping indirect radiator into gravity or vacuum return line. Fig. 6 shows the proper application of No. 8 or 9 Hoffman Valves for dripping storage tank coils into gravity or vacuum return. Cooling leg to be at least four feet or.more.in length. Fig. 2 shows application of No. 8 or 9 Hoffman Valve for venting and draining indirect radiator into air line, dry or vacuum return. Use No. 12 Valve for large radiators. Fig. 7 and 8 show typical methods of dripping ends of mains or branches into gravity or vacuum returns,thru No. 9 or 12 Hoffman Valves. Cooling leg to be at least '5 feet or more in length. Fig. 8. Dripping heel of riser thru dirt strainer and venting thru No. 8 or 9 Hoffman Valve into gravity or vacuum return. Cooling legs wherever shown must not be less than 5 feet long. Figs. 4 end 8 show proper application of No. 8 or 9 Hoffman Valves for dripping coils. Dirt strainers should be used when steam pressure exceeds 5 pounds. Fig. 8 shows application of No. 8 Hoffman Valve for venting end of steam main into dry return. 312 (ORT RETURN MAM 6RAONG DOWN FROM BOILER ALLOWANCE FOf GRADE OF MAM MOTTMAN DIFFERENTIAL UJOP SIZES Be CAPACITIES LOOP capacity A'nacwr O'PMHO MtC sortaa LE33TMJH ccnKcna* NO | N*E N*3 HI 4 Z4* 24 30 30 1/4" l'/4 'iyt 2 liiii OLOW OFF VALVC*- 313 | i