Ffswresra TT n p fcE 5R 25, 3tf ib rs i Good-B ye Heating Troubles m n emssssh V CONDENSATION AT TOP KEEPS RADIATOR. AUTOMATICALLY FILLED WITH WATER. AT THIS UVa FROM EHOTO END OF RADIATOR. STEAM COMES IN DIRECT CONTACT WITH WATER CAUSING QUICKEST HEAT ABSORPTION KNOWN TO SCIENCE, M0DUUT1CR , '.VLVE. V te l i it li Uf I i ? $ K I Bar 3:k . t ft u Wr ete D good-bye fuel-waate ana its excessive, unnecessary cost; good-bye shivering hours of waiting for radiators to heat-up to s useful temperature; good-bye rooms that are too cold in -winter and too hot in the spring; good-bye half-hot radiators that make but little impression on frigid atmosphere; good-bye hissing air-valves, noisy steam pipes, leaking hot water radiators; good-bye nauseous, vile-smelling, gas-charged air from air valves; good-bye pumps and all other mechanical devices (and their cost and trouble) for expelling air from radiators and steam pipes; good-bye boilers that crack or explode, leaving you heatless almost invariably choosing the coldest days of mid-winter for their defection; In fact, you can wave a permanent Good-bye to all the exasper ations ever developed by any other system or neaung STEAM IN CONTACT WITH THIS DIAPHRAGM CAUSES THE WATER. TORISEINTHEBI- LOOP SECTION. WATER CIRCULATION BY THIS METHOD COSTS NOTHING AND NEVER FAILS TO OPERATE. WHY PAY FOR PUMPING? MOMTOR TRAP BUSHING SEALS THE RADIATOR AGAINSTVAPOR FROM RETURN LINE HAS NO MOABLE PARTS AHDW11L LASTASIOHSASTHE RADIAIOR.I RETURN LINE! TO BOILER T note: USE OF BHOOP HOT WATER RADIATORS WllSAVE WHAT EVER MOUNT WU NOV PAY. 18 FOR FVMP CIRCULATION. 2tPKNraMKt "PRESSURE aRERWS'CKULWIjTRAP Jfo. Jp yK jTtbJ Jfe J W bs- jf. f. J I W $M 1M(ym $m lr 1m 1m IfM pLsa V ' C .. -T "?- C ' - - - '. 'y . -Zi rr - Y, ', - - V '. -I I ? liiui ussis nm mi um-x fesa urn msk ' , 3$ 3G fh rC rirj3 3cj gr Ef JK.'B . 5 : I I ,M 11 lip Iter l9 ljt fill lll pll : ARROWS INDICATETHE ' llr- ifefl W?$ 5&P lfer liiff lI ifel fse; theoperation isnoiseuss r "" " W SECTIONAL DIAGRAM SHOWING CIRCULATION OF WATER AND STEAM INTHE MONITOR BI-LOOP HOT WATER-RADIATOR In opeiation, this ladiator is 95 per cent, filled with water and the remaining space with steam. Tho steam heats the water in the radiator, producing the quickest heat absorption known to science. It also heats the metal diaphragm or partition in the bi-loop section, causing the water to circulate within the radiator; each radiator thus becomes a separate circulating unit. Within 20 minutes after steam enters the radiator, complete circulation is established and the radiator is hot all over. By means of a by-pass valve any bi-loop ladiator can bo emptied of water separately. M M When You Install the ODULATED HOT WATER HEATING ONITOR KI-LOOP lYSTEM (Patented). Most Heat Least Fuel If we can prove that you can SAVE 25 per cent, of the fuel bill and practically all of the repair bill and get satisfactory heat under all con ditions, wouldn't it pay to investigate the Monitor Bi-Loop Modulated Hot Water Heating System? This system is revolutionizing the heating industry wherever introduced. Like All Great Things It Is Extremely Simple In the Monitor Bi-Loop Hot Water Heating System, the water is heated in each radiator by steam. You thus secure the very desirable quick action of steam and the mild, healthful heat of hot water. In the Monitor Bi-Loop Hot Water Radiator (patented) , steam is brought into direct contact (in each radiator) with the water, the operation being absolutely noiseless. Within twenty minutes after steam enters the radiator, complete circulation is established and the radi ator is hot all over. Each radiator thus becomes a separate circulating unit. Many evils, hereto fore believed to be indispensable conditions of heating systems, are entirely eliminated from the Bi-Loop system. Instead, we have the certain, costless operation of the law of gravitation and the strong natural affinity of steam for water. No Guess-Work It Works The Monitor Bi-Loop Modulated Hot Water Heating System is no untried experiment. It is working out exactly as claimed (or better) in hun dreds of buildings, including churches, apartment houses, office buildings, factories, ' homes, hos pitals, and other institutions throughout the country. It is also solving the problem of hot water Get the Bi- heating' from a central plant for groups of build ings, and for high buildings, such as modern hotels and office buildings. Owners' Actual Experiences By actual experience the Monitor Bi-Loop Modulated Hot Water Heating System produces more heat from the same amount of fuel or the same heat from less fuel. By actual experience "Monitor Bi-Loop" repair bills are practically nothing. By actual experience the Monitor Bi-Loop Hot Water Heating System provides an even, satisfactory, controllable temperature in all parts of any building under all conditions. This experience has been gained and is being gained by the owners of Bi-Loop Hot Water Heating installations, by the people most vitally interested, by those who have pinned their faith to and invested their money in the Bi-Loop Sys tem. They have no "axes to grind" beyond get ting the most satisfactory heat at least expense and trouble. Tested by Experts The Monitor Bi-Loop Modulated Hot Water Heating System has been tested in every con ceivable way by heating engineers, professors of mathematics and physics, state boards, hospital boards, building committees and practical fire men. These critics are disinterested, cold-blooded, searching, authoritative. Here is what they agree upon regarding it : "The Monitor Bi-Loop Modulated Hot Water Heating System possesses all the advantages of heating by steam, vapor, vacuum and every other hot water system and eliminates their defects; that it operates with un-precedentedfuel-economyandmaintenance effort; that its cost for repairs is practically nil; that it Loop 1919 Catalogue is absolutely 1 00 per cent, efficient for high and large buildings, as well as dwellings; that it ac complishes the elimination of air without the aid of a pump or any other mechanical device; that it is easy to install and is easiest to operate; that it adds measurably to the investment value of the building in which it is installed and considerably cuts down the overhead charges." Bi-Loop Hot Water Radiators Correct Defective Steam Systems By substituting Bi-Loop Hot Water Radia tors for the old steam radiators, an inefficient steam system may be converted into a highest class hot water system. The case of the Lancas ter General Hospital (Lancaster, Pa.), is a not able example. They had an elaborate steam heating system in operation. But it was impos sible to maintain an even and adequate tempera ture. The management retained the old boilers and substituted Bi-Loop Hot Water Radiators for the old steam radiators aj d, during the cold est winter this section has known (1917-18), a perfectly even, satisfactory temperature was maintained throughout the big structure without difficulty and with considerable saving of fuel. Ask for Proof But don't accept our wonderful claims with out question. Ask Bi-Loop owners. We have hundreds of testimonials write for those that bear upon your own heating problem. Get the Bi-Loop 1919 Catalogue Look it over, then ask your heating man to study it carefully. Don't put off this important matter until every heating contractor and fitter is swamped with business. Attend to it NOW and get it off your mind. If you want an eco nomical, scientifically correct, easily operated heating system you can. have it. It's up to you. BAFFLE PLATE StffiFA.CE BLOW-OFF AUTUBE- B U-TUBE -r Jil l Wlnilll II I e . . U 1-ffl I IH I - 4 ft s.-C.u-TLIBE 5- i'll l ! 11 I 4 -1.-D.U-TUBE I M -l' , -S-4SH0RT 1 ii I 111 nirltiw"'! U"TUBE4 11r I vfSS 1 2 l fell )&lSgML a WMwXSSk -o-J-",ru' f3afannrrV.-.L THE MONITOR "U" TUBE BOILER A Monitor "U" Tube Boiler is so made that it cannot crack nor ex plode NO DANGER of having the heating plant out of commission in mid-winter. It is the mosi powerful steam, or water-heating boiler made. It is for high- or low-pressuio. Less fuel is required to produce and main tain steam than with any other pattern. Its life is longer, repair expense practically nothing, and it lequircs the least attention of any boiler now offered for sale anywhere. Monitor Boilers have been in use as long as 25 years without needing a single repair. , Mail This Requisition Now Monitor Bi-Loop Radiator Co., Lancaster, Pa. ' Send me your latest Catalogue. It is understood that this request involves me in no obligation whatsoever. Name . . Address Mbnitor Bi-Loop Radiator Co., Lancaster, Pa. Philadelphia Office, 408 Finance Building (South Penn Square) ; or, ask any Progressive bteam Fitter s 41 -! ?l 711 ,.) f City . State 1 TMi r inii n iifr E P. L, H-23-19 'i , K 4 ', .- "nfe' ' I 'iYtV r0 - ' s w n ' ji' m ,.., . "...,.'. Lit. Ot
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