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120 



The Florists^ Review 



July 13, 1922 



labor is to be sacrificed in order to 

 effect a saving in the first cost of a 

 lieating plant. Sometimes, too, it may 

 be feasible to allow the temperature of 

 a greenhouse to drop several degrees 

 below the minimum mentioned, and thus 

 materially reduce the amount of radia- 

 tion required in a greenhouse. 



However, the amount of radiation 

 suggested is considerably below what 

 should be used, if more than 40 degrees 

 is to be provided under the most severe 

 conditions, and the use of two 2V^-inch 

 flows is suggested in each house, with 

 eight 1%-inch returns for 50 degrees 

 and ten returns for 60 degrees. The re- 

 turns should be carried as high as pos- 

 sible, and it would be preferable to have 

 the flows on the purlins rather than on 

 the gutters. 



PIPING NEW HOUSES. 



I have two greenhouses, 32x50 feet, 

 which I should like to pipe for hot water. 

 I wish to maintain 60 degrees in zero 

 weather. There are four feet of glass 

 in the side walls, while the ends are of 

 glass. It is six feet to the gutter and 

 fourteen feet to the ridge. I thought of 

 using a 5-inch main and two 3-inch 

 flows, together with twelve l^-inch re- 

 turns in each house. Will this piping be 

 sufficient? As the top of my boiler will 

 be level with the ground, will it be ad- 

 visable for me to run the main flow 

 along the ground to the point where 

 the four 3-inch flows connect with it? 

 If I pipe the greenhouses in this man- 

 ner, it will not be necessary for me to 

 run any pipe outdoors. M. B. — O. 



While it is preferable to carry the 

 flow pipes as high as possible, under the 

 conditions mentioned we would carry a 

 5-inch main underground, but would 

 have it either level or running slightly 

 uphill and reduce it to 4-inch after tak- 

 ing off the supply pipes for the first 

 house. These may be 3-inch, as planned, 

 but our choice would be to run five 2%- 

 inch pipes overhead in each house, drop- 

 ping them one inch in fifteen feet. 



While IMi-inch pipes may be used for 

 the returns, it would be preferable to 

 use 2-inch pipes for this purpose. It 

 would require careful firing and a boiler 

 with a large grate to maintain even 50 

 degrees in zero weather with two 3-inch 

 flows and twelve IVL'-inch returns. Not 

 less than twenty IVo-inch returns will be 

 needed for 60 degrees, and twenty-four 

 should be used for the highest economy 

 in fuel and labor. Better results can be 

 obtained with five 2 14 -inch flow pipes 

 and fifteen 2-inch returns in each house. 



PIPE and FLUES 



A LL SIZES of second-hand pipe, with 

 "■ new threads and couplings, in ran- 

 dom lengths or cut lengths. Also 

 make a specialty of handling boiler 

 flues for retubing boilers or for green- 

 house piping. All flues are trimmed 

 and thoroughly cleaned by machine. 



JOHN GROH 



1885 Clyboum Ave., CHICAGO, ILL. 



ESTABLISHED 1867 



S. WILKS MFG. COMPANY 



Manufacturers of 



WILKS HOT WATER BOILERS 



FOR GREENHOUSE HEATING 

 3517-3539 Shields Ave., CHICAGO, IIX. 



,\. I JIV/, I \. i. 1.4V I 





— A Boiler Furnace Lining characterized by high heat resistance, large 



blocks, few joints and hard, smooth surface. Each setting is built to fit 



exactly the dimensions of your furnace. 



Boiler Door Arches last from two to ten years. 



Fire Box Blocks more than double the life of ordinary fire bricks. 



Back Combustion Arches last as long as the boiler. 



Blow-0£f Pipe Protectors are good for years (set up in a few minutes). 



"Steel Mixture" boiler settings now in 

 use in more than 9000 plants and we 

 guarantee satisfaction if installed in 

 yours. 



We also make Standard Fire Bricks, 

 Boiler BafHe Tiles of all kinds and the 

 "Steel Mixture" High Temperature 

 Fire Cement. We ship on receipt of 

 order. 



Write for a Book of Dimensions. 



McLEOD & 

 HENRY CO. 



TROY, N. Y. 



NEW YORK BOSTON DETROIT 



Mention The Review when you write. 



IMICO 



Hot Water Boilers 



Made by 



Dlinois Malleable Iron Co. 



1 80 1 -1825 Divercey Boulevard 



CHICAGO 



Are noted for COAL ECONOMY and 

 good results generally 



SEND FOR CATALOGUE 



Mffiehead 



Points the 

 Way to 

 Economy of Fuel 



IB 



EGIN NOW to find out about the "Morehead** System. Send right away 

 for the "Morehead" book for florists. In it you will find an easily understood 

 discussion of the boiler and condensation question from the practical 

 standpoint of the grower of flowers. Write for this help TODAY. 



MOREHEAD MFG. CO. 



Dept. "M" 299 



DETROIT, MICH. 



Mention The Review when you write. 



It Lets the Florist Sleep 



Lot us tell you what one 

 will CDst (li'llvcred at 

 your Kailrond Station. 



WRITE NOW 



You don't have to sit up and watch a 



GIBLIN GREENHOUSE BOILER 



GIBLIN & CO, UTICA, N,Y. 



PIPE— Second-Hand 



All sizes Fittings and Boiler Tubes 



Pipo cut We guarantee entire satisfac- 



to sketch. tion or money refunded 



Philadelphia Second-Hand Pipe Supply Ci. 



1003 N. 7th Street, PHILADELPHIA, PA. 



■PIPE- 



Wrought Iron of sound second -hand Quality 

 with new threads and couplings, 16-ft. lengths 

 and up. Also pipe cut to sketch. We guarantee 

 entire satisfaction or return money. 



ALSO NEW PIPE AND FTmXGS 



Pf aff & Kendall, f^"^ Newark, N. J. 



