m 



■ .'..\.-:> ■'• ■ ;,• i.v,., };^i 



The Weekly Florists' Review. 



December 1, 1910. 



TO MAINTAIN AN EVEN TEMPERATURE IN YOUR QREENHOUSES, USE A 



Foster Pressure Regulator 



With this simple device attached to your steam main just inside the greenhouse the pres- 

 sure on the heating coils will be absolutely constant, anywhere from 1 to 16 pounds (whatever 

 the grower sets the Regulator at), 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 lO^inch just for this yroTk. 



" The Foster Pressure Regulators which have been installed In our greenhouses are giving 

 perfect satisfaction."— Peter Reinberg, Chicago, March 16. 1910. 



-Write for circulars and prlces- 



We manufacture a 



State vour conditions ; it will give us pleasure to help you if we can. 

 large number of steam specialties. 



Foster Engineering Co., Newark, N. J. 



';«iS$«Si9$9$:8!S«$$S«iS«S$9S$S$9$^^ 



Mention The Review when you write. 



with a water glass but no safety valve, 

 which we have been told would be un- 

 necessary even if the boiler were level 

 with the greenhouse. C. G. J. & S. 



The size and other data given are 

 the same as in the previous communica- 

 tion, and the advice given requires no 

 change. 



In case a closed system is used, there 

 should be a safety valve on the expan- 

 sion tank; otherwise it will not be nec- 

 essary. One 2-inch flow will answer, 

 although there would be no objection 

 to using two, except that they might 

 be in the way. It would be better to 

 use one 2i/^-inch. The flow should rise 

 to a height just below the bottom of 

 the ridge, at the boiler, and then run 

 at a slight fall to the end of the 40-foot 

 house, where it should drop so as to 

 run under the ridge of the other house. 

 At the farther end take off two 2-incli 

 pipes, each of which should supply two 

 2-inch returns. It will not be wise to 

 try to heat the house with less than 

 five 2-inch pipes. 



So far as radiation is concerned, the 

 size of the pipe makes no difference. 

 Two-inch pipe is best for medium and 

 large houses. Unless there is more than 

 200 square feet of radiation, one 2-inch 

 flow pipe, with one connection to the 

 boiler, will be sufficient. Set the boiler 

 as low as possible, and keep the flow 

 and return pipes as high as possible, 

 especially if an open system is used. 



BOILER BUNS DBT. 



We have recently put a steam heat- 

 ing system in our church. The system 

 fails to work, and I, being a member 

 of the seed trade, am naturally im- 

 pelled to apply to The Keview for 

 information. We have a lecture room, 

 with the audience room directly over 

 it. The boiler is located at the rear 

 end of the church, in a cellar seven 

 feet below the surface. We have no 

 radiators, but coils of 2i/^-inch pipe 

 running along the sides of the rooms. 

 The boiler has three openings on top, 

 but the plumber used but one, plug- 

 ging the other two. When fire is built 

 and steam turned on, the water is 

 quickly drawn up the pipes, emptying 

 the boiler. What is the reason for 

 this! J. R. H. 



Nothing is said regarding the ar- 

 rangement of the piping, and it may be 

 that the trouble is the result of there 

 being no way for the water to get back 

 to the boiler after the steam has con- 



Do You Know 



What goes on in your greenhouse dur- 

 ing the night, or during your absences? 

 You only t hink jou know unless 

 you have a 



STANDARD 



RECORDING 



THERMOMETER 



Capable night firemen enjoy 

 these thermometers — they leave a 

 written record under look and key 

 that is the best recommenda- 

 tion any good fireman could have. 

 If you are your own night man, 

 find out just how the temperature 

 has varied while you slept: it has 

 tx'en worth much money to others 

 and may be to you. 



Send lor Circulars 



STANDARD THERNONETER CO. 



(Suceessors to PARK£R MFG. CO.) 

 65 Shirley Street, BOSTON, MASS, 



Mention The Review when you write. 



IMICO 



Hot Water Boilers 



Made b7 



lUINOIS MALLEABLE IRON CO, 



180M825 Diversey Boulevard 



CHICAGO 



Are noted for coal economy and 

 f^od results (generally 



SKND FOR CATALOGUX 



Mention The Review when you write. 



DATI8' COMBINATION CHECK and 



GLOBE YALYES 



For Steam Heating Systems 



Better than any other check valve for 

 any purpose, but especially adapted for 

 use on pipes leading to steam boilers and 

 from heating pipes to return pipe. 



Se*i fsr detcriptive circular ind price list. 



W. B. DAVIS, • Avora, Uiiiis 



Mention The Review wbea you write. 



DRAPER'S 



Recording Thermometer 



Traces antomatlcally a correct 

 and continuous record in Ink of 

 the temperature on a graduated 

 weelcly chart. Standardized and 

 fully guaranteed. 



Size 14 X 20 in., price, $30.00 

 Size 9 X U in., price, 20.00 



THE DRAPER MFO. CO., 



152 Front St.. New York 



Mention The Review when you write. 



