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PLANT EQUIPMENT NEWS Your information center for new products designed to sofve plant profc|e tV\ ^UvttOOMMTt MMUuRrCC UU*- - ---------------_-_--_-_--_-_- i_f_t____ _____^____ J nt!( OCKCICM wuivt* tCKEMATlC OlAQUAM. shews separate ctuatlOQ mechanism* for the system's Independent smoke and heot detection circuit! /SP- SUITABILITY; . FIATUaiS; 0M&~. MAINTENANCE COST! -jate HOewAtiV OMW rri FIRE DETECTOR is hermetlcolly Moled opolnjt dift. After shell expond*' on temperature rite, doting twitch contacts HatHatlon Detector 90S Pockei-tke Gamcuk iodicsta a* direct-reading tcsle the total dougs SERVICE LlFIt Smoko and Fire Detector Gamma and X-raye to which a body or has been subjected, manulsetum 904 New fire-ptotetliao unit hu * two-stage smoke detector plus en independent fire er overheat detector. The emokodetectisg anlt consists- of e light scarce and n deeirie-eye receiver. It operates when receiver detects e drop in light intensity, showing the presence o( smoke. Depending en the amount of light absorbed, the receiver trigger* one of Su two stages. The first stage, responding to a relatively lew smoke den, shy, usually sets ofl e local plant alarm. Second auge operates ei higher smoko density, sets off e ratjoc atom nr extinguishing ymm. By observing lime needle takes le across the scale and referring to printed on the back, instrument can bo as a radiation nto-meler. It is design) i monitoring in atomic tttearch, medics! industrial radiology, ate. Bulletin CE 1008. Consolidated Engineering Carp, EM Sierra Modre Villa, Pasadena IS, Csl At the Eureka Redwood Lumber Company, Eureka, " Calif., featuring eight 5-in. Crane stop-check valves ;7oa boiler lines to main steam header. OPIRATINO RESULTS! ` AVAILABILITY! The separate fire detector unit responds to beat Known as a Deteei-A-Fire, node by Fvaira), Inc, it operates on so cafircly independent circuit to an alarm or eatlnguisblflg system, providing THE CASE HISTORY response if % relatively smokeless fire occurs. This detector uses differential explosion of metals to produce an effect known at "rale compensation." Detector Is aid to function consistently et its pre-set operating tempttature regardless ol the rate of rise in temperature of the surrounding medium. It operate* when sur rounding temperature reaches e point that can be set anywhere from 140 to 725 F according to degree of protection desired. Cnrdox Corp, 90S N Michigan Are, Otfesgo ], If], r; ^Thirtyyear9* continuous service is by no mason the j;; recbid lot Crane 250-Pound stop-check valves. But wbeb 6 such valves, all (ustaited in 1923, are atiil on j the Job, end atill giving complete satisfaction, surely r that's worthy of note. So wall did those Crane No. " JOB stop-checks perform right from the start, that THE VALVE Simplicity and depend ability are atiil the chief cbaractertatlci of Crane 250-Pouad atop-cbeck valves. They have Just one moving port--the piston- Pressure Relief Valves 922 New larger-aired pressure relief valves for hot water space hating hollers protect against over pressure. The new valves, shows Is the photograph at lft, are called the 1-lncb No. 230 and the 1 H-incb No. 230. They are suitable for use on hoDen with heat output to 743,400 Biu/hr and 1,025,100 Biu/hr, respectively; they open at 80 pah Operating parts are of iton-corros/vo Safely Switch 950 * New 200-arap from-eperiled nlw ty switch (or 250 end 600 v Rhea ha* ris ible blades. Overlira handle shows up dis tinctly Iron a distance. Indicating wbtthfi switch is on or oB. Fum holder has pressure spring aodff the lose where it is said to be unaffteten by fuse host. The two Joint* to each pel* 11 years later, in 1934, 2 more were put on boilers //installed that year. f, Here are 0 valves with a collective service record of mote than 220 years. And in ell that time, the only maintenance required was regilndlng tbs seat of one valve. ;It takes a lot of quality to deliver such valve per formance with so (itUe upkeep. Th&t'g why tod*/, )a (see of iking maintenance cost, Crane quality is more thsfl ever the first choice of the thrifty valve buyer. type disc that operates In a removable liner, without chatter, vtbraUon, or rapid wear. You'll havo a eater power plant with theao vafresoafourboilers, and they'll permit ateam flow to the main header at min imum preeaure drop. See your Crane Catalog or Crass Representative lor complete information. the setter quality...bigger value line...in brass, steel, iron materials, and valves are aid to be tampei. proof. McDonnell d Miller, Inc, 9500 N Spaulding Are, Chicago 18, 111. are under heavy prewuro from estemsl steel springs. Contact resistance I* to be minimized, preventing heeling- I" sulstcd cross bar undemath tbe twit** CRANE VALVES P. 1st. Ideality rea"r *rvemltttmri>m**I*fnt*1a'ercaatorr*. blades nssores opening of the switch who -handle is thrown to "off* position. Federal Eleetrie Products Co, 50 Pork . St, Newark 5, N. J. [Continued on page 154) CRANE CO., Central Ofitttv 83d 5* Michigan Are,, Chicago 9, Illinois Branebot and Wboleiatm Serving All iadattriol Areas VALVES FITTINGS . PIPE PLUMBING <33 READER SERVICE ScCTION | smuwa !M> 1