184 



The Florists^ Review 



Adgcst 21, 1913. 



IMICO 



HOT WATER BOILERS 



ESPECIALLY SUITED FOR 

 GREENHOUSE WORK 



Are noted for coal economy - 

 and good results generally. 



Are constructed so as to ex- 

 pose the greatest possible 

 heating surface to the direct * 

 action of the fire, thereby 

 effecting a considerable sav- 

 ing of fuel. 



Wrought Iron and Steel Pipe, Malleable and Cast Iron 



Fittings carried in stock 



IF YOU 

 BEST SPECIFY 



m 



WANT THE 

 THIS BRAND 



Illinois Malleable Iron Co., 1801-25 oiversoy Parkway, Chicago, III 



under each of the benches, as they are 

 desirable not only to furnish bottom 

 heat, but to dry out the soil if it be- 

 comes wet from drip or overwatering. 



The special fittings are helpful, but 

 not necessary. The returns can be con- 

 nected and carried to the Ijpiler as one 

 2%-inch pipe or two 2-inch pipes. 



SLUGGISH CIBCULATION. 



I wish to ask a question in regard 

 to hot water heating. I have two 

 houses, one of them 18x100 and the 

 other 12x50. The flows go directly from 

 the boiler up to the purlins and at that 

 height to the other end of the house; 

 then they drop down to coils under the 

 benches. The coils are made up with 

 return bends, so that the water travels 

 practically 400 feet to get back to the 

 boiler. As the coils are horizontal, it 

 is almost impossible to get a steady fall 

 all the way; hence pockets form and 

 some of the coils are every little while 

 becoming dead. There is one coil on 

 the side wall, and that, having a good 

 fall, heats satisfactorily. But the 

 houses are so arranged that the rest of 

 the coils must go under the benches. 



My idea is to take out the return 

 bends and put in manifolds; then I can 

 get a steady fall all the way. The 

 manifolds, of course, would be horizon- 

 tal. Do you think this would remedy 

 the trouble? I use a mercury circula- 

 tor. As the small house has only two 

 returns under the benches, the piping is 

 the same in effect as a manifold and 

 works satisfactorily. C. P. H. 



The trouble is undoubtedly due 

 largely, and perhaps entirely, to the use 

 of the return bends, and the change 



Meptlon The Review when you write. 



Full Weight ''Reading" 



Wrought Iron Pipe 



Sizes M-in. to 12-in. from stock 



FORD & KENDIG CO. 

 PHUADELPHIA, PA. 



87 North 7 th St. 

 84th and Wood Sts. 



READING GUARANTEED 



Wrought Iron Pipe 

 Nelson Voives 



All Size* In Stock. 



The Hartman Company 



1231.5 No. Front St., Philadelphia 



proposed will certainly prove helpful 

 and will perhaps remove the difficulty. 

 To get good results, care must be taken 

 that the flow and connecting pipes are 

 of ample size. For a temperature of 60 

 degrees, if there are two flows they 



Steel 



Return 



Tubular 



Boilers 



The moat economical type of boiler for Greenhoneo 

 heatlnK. Highly recommended by well known floristd 



Johnston Heating Co. 



131 E. 26th St., NEW YORK 



4-iNCH 



BOILER TUBES, 61 



cants par foot. 



N«w and S. H. PIpa. All SIzaa. 



Tell U8 your wants. 



nxiNOis piPC at mfg. co. 



2117 8. Jefferson Street, CHICAQO. ILL 



should be 2 1^ -inch, and for a coil of 

 four 114 -inch or 2-inch pipes the con- 

 necting pipe should be 2-inch. In addi- 

 tion to the flow pipe, use nine 2-inch or 

 eleven l^^-inch returns, or -for 50 de- 

 grees six and eight returns, respectively. 



