68 



The Weekly Florists^ Reyiew. 



JUNB 30, 1910. 



the stem, so that when the stem is 

 screwed upward, or open, the disk still 

 remains on the seat of the valve, but is 

 free to work up and down, just as an 

 ordinary horizontal check valve, permit- 

 ting steam or water to flow one way, 

 but preventing it from flowing back- 

 wards. When the valve is left open, as 

 it is ordinarily, it is simply a check 

 valve, but when desired to close the 

 valve, to prevent all passage through it 

 either way, the stem is screwed down 

 by turning the wheel handle, just as in 

 closing an ordinary globe valve. When 



Valve Invented by W. B. Davis. 



so closed the valve is then a globe valve, 

 preventing a flow either way. 



"When the stem is screwed down it 

 strikes the disk and forces it to close 

 down and holds it there, perfectly tight, 

 at the same time causing it to turn with 

 the stem, thus grinding out any dirt or 

 scale which may have collected on the 

 seat and making an absolutely tight 

 shut-oflf. The turning of the disk is ac- 

 complished by having a stub projecting 

 horizontally out from the side of the 

 stem near the lower end. This projec- 

 tion strikes one of the guide points pro- 

 jecting upward from the disk and 

 plunger and causes it to revolve when- 

 ever the stem is turned up or down. 

 This same movement also prevents the 

 disk from sticking shut, as the disk 

 must turn and become loose when the 

 stem is raised or opened up. 



"The advantages this valve has over 

 the regular old styles and methods are 

 many. It will be cheaper, saving one 

 valve and a nipple, also labor in each 

 connection where it is used. It takes 

 up less space in connecting, and heating 

 pipes can be run a little nearer to the 

 return pipe. It can be installed in some 

 places where both a check and a globe 

 valve cannot, for lack of space. It is 

 better than a regular check valve be- 

 cause it can be put in working order 

 almost instantly without taking it apart 

 if scale or dirt collect on the seat, by 

 simply closing down the handle and 

 opening it again. 



"Many growers now avoid using 



GET WISE 



to the fact 



you will 



by installing: The Martlu Rooking Grate. Costs a little more than ordinary 



grates, but the coal bums— it doesn't go into the ashpit. 

 We refer to Peter Reinberg:, Emil Buettner, Bassett & Washburn, Wietor Bros., Adam Zender, 

 Sinner Bros., Albert Dickinson Seed Co., and many others. Tbey will tell you to order the Martin 

 Kookins Grate for the new boilers to be put in this season. Write for catalogue and prices. 



MARTIN GRATE CO., 



283 Dearborn St. 

 CHICAGO 



Bend order now— we will make up the grates and bold until you say sblp 



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THE KROESCDELL BOILER 



18 THK ONLT PXRrKCT 



Hot Water Boiler 



Hot Cast Iron 



Has thin waterways. Heats quickly. It is the 

 most efHcient, safest and most economical 

 boiler built. Very powerful. 15 sizes, 

 heating from the -smallest greenhouse up to 

 60,000 square feet of glass to 60 degrees, at 

 15 degrees below zero. 



Prices and catalogue on application. 



KROESCHELL BROS. CO., 444 Erie St., CHICAGO 



Mention The Review when you write. 



INICO 



Hot Water Boilers 



Made by 



lUINOIS MALLEABLE IRON CO. 



180M825 Diversey Boulevard 



CHICAGO 



Are noted for coal economy and 

 fl^od resulta generally 



BEXm FOB CATALOGUS 



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check valves on their heating pipes be- 

 cause they are not satisfactory. In such 

 cases a globe valve is used, making it 

 necessary, when turning steam into a set 

 of pipes, to go to the other end of the 

 pipes and open the valve to the return. 

 In shutting oflf runs of pipe this valve 

 must also be shut again, making much 

 walking necessary. 



lligh-(irade Boilers 



S»S^For GREENHOUSES 

 STEAM and HOT WATER 



GIBLIN&CO..lltica,N.Y. 



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