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JULT 10, 1919. 



The Florists' Review 



83 



WILIS SELF-FEEDIRC 

 lOT WATER BOILER 



riirCaNMiiiy,Dttrabily,DepefldabiRir 



loctallalKILKS 



And f oi^t yonr 



No nitfht flr«- 



man required— 

 M thttJflBUMudne 

 oreoaToMfaibft 

 holds 8dfi<^^ 

 Inel to keepive 

 V to 12 hoars 

 without atten- 

 tion. Best made 

 for a small 

 greenhouse. 



BsndforCateloiBne 

 ud PriMi 



TalmhoiM 



S. WILKS 

 MFG. CO. 



CHICAGO, ILL. 



MantlOB Tlw B«t!«w when yon write. 



^Illllllllllllllllllllllllllllllllllillllllllllllis 



I /koiehead I 



I Uniform Heat f 



I for Flowers | 



E The Morehead Back -to- Boiler Sys- S 

 S tern keeps your steam lines clear of s 

 S condensation. S 



S Uniform temperature tliroushout E 

 S your greenhouse is assured. S 



S Fuel is saved-^because the conden- Z 



S sation is returned to the boilers as E 



S hot, pure water— ready to burst into S 



S steam. S 



S Let us send you complete informa- s 

 S tion about the Morehead System. S 



I MOREHEAD MFG. CO. | 



S Dept. "M" DETROIT. MICH. E 



aiiiiHiiiiiiiiiiiiiiiiiiiiiiiiiiniiiiiiiiiiniiE 



them along the side walls. Use seven 

 1-inch pipes in each coil, or put eight 

 in one of the coils if the house is much 

 exposed. 



A RANGE OF THBEE HOUSES. 



I have three greenhouses, each 32x 

 140, with no partitions. The side walls 

 are four and one-half feet high and con- 

 tain no glass. The height to the ridge 

 is twelve feet. The houses run east and 

 west. The west end is glass, except the 

 three feet at the base. The east end is 

 protected by a building. There are 

 three benches and one ground bed, six 

 feet wide, in each house. I expect to 

 heat with steam and have been planning 

 to use a 2-inch overhead flow pipe in 



Condensation 

 Causes 



m 



Uneven Temperature 



In your heating system, 

 where even temperature 

 is so important 



Fisher Steam Trap, Type 33 



will eliminate condensation as quickly as it forms. 

 Accumulated condensate robs steam of its heat and 

 power. It prevents efficient operation of your plant. 

 But Fisher Traps at low points in the system will 

 keep the steam hot and dry. You will find it easy to 

 maintain even temperature. ^ 



Here's Another Money Saver 



A float and chfeck valve that permits 

 filling and emptying a tank through 

 the same pipe. It holds any level. de- 

 sired in the tank. The construction is 

 such that fire pressure may be carried 

 in the mains when tank is full. 



You will find Fisher Automatic Check 

 and Float Tank Valve, Type 15, has 

 other interesting features. 



May we send you information 

 about the full line of Fisher 

 Greenhouse Economizers? 



The Fisher Governor Co. 



244 Fisher Avenue, Marshalltown, Iowa. 



Agancies in all principal cities 



TUBING, ALL SIZES 



PIPE CUT TO SKETCH 



SECOND HAND PIPE 



Large stook, all lizes. fornished with new threadi and ooaplinsi. 



JAMES ¥m GnlrrlTlij phTladblphia, pa. 



each house, with three 1%-inch returns 

 under each bench and one 1%-inch pipe 

 on each side of the ground bed. Will 

 this be plenty of piping to heat the 

 houses to 60 degrees in zero weather? I 

 have a return-flue boiler, walled in with 

 brick. The boiler has a 36-inch shell 

 and contains twenty-four 2%-inch flues, 

 ten feet long. Will this boiler be large 

 enough for the three houses f 



P. L. G.— Ark. 



To heat a greenhouse 32x140 to 60 



degrees in zero weather, about 850 

 square feet of radiation will be re- 

 quired. This is too much to be handled 

 by a 2-inch main, unless high pressure 

 is used, and we would advise the use of 

 a 2%-inch overhead main in each house, 

 although two 2-inch mains on the plates 

 might be used. The use of three coils, 

 each containing three 1%-inch returns, 

 and one 1%-inch return on each side of 

 the bed, as suggested, will supply the 

 needed radiation. 



The size of the grate is not given, but 



