•^7'" '•-. •■ 



V V 



SamuBss 12, 1912. 



The Florists' I^view 



85 



IHmO 



TO MAINTAIN AN EVEN TEMPERATURE 

 in your greenhouses, use a 



Foster Pressure Regulator 



With this simple device attached to your steam 

 main just inside the greenhouse the pressure on 

 the heating coils will be absolutely constant, any- 

 where from 1 to 15 pounds (whatever the grower 

 sets the Regulator atj, no matter how the pressure on the boilers 



runs up and down. 



If the weather changes, or the sun heat varies, instead of turning on more pipes, just 

 turn a nut on the Regulator, and get more steam, or less steam, at once. Made in sizes 

 from ^-inch to 10-inch just for this work.. „ 



"The Foster Pressure Refsniators which have been installed in our greenhouses are giving 

 : perfect satisfaction." — Peter I?EmBERG, Chicago. 



As an expert in your line, let us talk it over, as experts in ours. We 

 recommend. We aid you in the selection of the proper size and type. 



FOSTER ENGINEERING COMPANY 



We take the same pride in our work as you do in yours. 

 NEWARK. NEW JERSEY 



PHILADELPHIA, PA., 601 Harrisou Building 

 BOSTON. MASS., 161 Summer Street 



CHICAGO. ILL.. 180 North Dearborn Street 

 PITTdBURQH. PA., 518 Park Building 



Xlditlon Tlip HhtI.'w whj-n von «Tlt«« 



What is the Host Vital Point in Grate Construction? 



Grate makers and users agree that the most important point is to keep 

 the air spaces open as long as possible under all conditions. 

 We guarantee to keep the air spaces of the 



MARTIN ANTI-FRICTION ROCKING GRATE 



open lunger under any conditions than can be done by any other grate 



in exisitence. 



The hottest fire you can build will not warp a "Martin" and it can be 



installed without disturbing the brick work. 



We refer to Peter Reinberg. Emil Biiettner, Bassett & Washburn, Wietor Bros., Adam 

 Zander, Siuner Brus., A.beit Dickinson Co., and many others. 



Write for testimonials and full particulars. 



343 So. Dearborn St 

 y CHICAGO 



MARTIN GRATE CO., 



ll<>otlno The Review when vou write. 



have a sectional boiler, with a grate 

 surface of five and one-half square 

 feet. Will it heat the two houses to 

 -about 52 degrees in zero weather? 



W. B. D. 



The plan for piping the smaller house, 

 as submitted, would probably give good 

 results, but the temperature specified 

 -can be maintained more economically 

 if a l^i^-inch return is run along the 

 wall which has the glass, in addition 

 to using the four 2-inch returns as pro- 

 posed. 



The temperature of the larger house 

 is not given, and if it is kept at 60 

 -degrees the 3-inch main would not be 

 «ble to supply the new house also. In 

 fact, it will be better to rua a new 



Pipe Fittings -- Imico Boilers 



-FOR GRKXBfHOUSK WORK- 



ILLINOIS MALLEABLE IRON CO. 



1801'1885 DIVXR8KT BOUUEVARD CHICAGO 



Meuiluu I'be Ueview wUeu you write. 



main from the boiler, even though the 

 large house is only kept at 50 degrees. 

 If this cannot be done readily, at any 

 rate connect the main for the new house 

 to the present main as close to the 

 boiler as possible. While it would an- 

 swer to use a 2-inch main for the new 

 house, better results can be secured if it 



is 2V^-inch or even if a 3-inch main is 

 used. If the boiler is a good one, it 

 should heat the two houses to 52 de- 

 grees. 



WITH STEAM OB HOT WATEE? 



How many flows and returns, and of 

 what size, will be required to heat one 



A 



