Document Bw5EgV4bxooORvZznn8jgM7m

ZfSrorig Machine Works Specialties, Heating Armstrong Machine Works 851 Maple Street Three Rivers, Mich District Sales Offices In 42 Cities Exclusive Manufacturers of Armstrong Steam Traps PRODUCTS: Inverted bucket steam traps. Advantages: The Armstrong In verted Bucket Trap has all of the features necessary to highly satis factory trapping performance. --no airbinding. Armstrongs cannot airbind. Air and undissolved gases rise to the top of the trap and are dis charged with the condensate. This advan tage is of the highest importance in the drainage of unit heaters, headers, dryers, etc. ---small size. While small enough to be supported by con necting pipes, Arm strongs have greater capacity than many traps of larger .size. This is especially important with unit heaters, which are often suspended in midair. (See next page for table of sizes No. SO Trap for draining small units and capacities). --no clogging. The Armstrong will handle without difficulty scum and sludge that comes over from the boiler. The upward-swirling motion of the condensate makes this trap self-scrubbing. --no leaking or wire-drawing. The trap is always water-sealed against steam leakage. Heat treated chrome steel valves (an exclusive Arm strong development) pre vent valve wear due to wiredrawing. --attentionless oper ation. Positive operation and the features mentioned above make the Armstrong trap practically attention No. S Trap less and foolproof in oper for General Service ation. It is nothing un usual for them to operate efficiently for years without attention. Armstrong traps are extensively used for low and high pressure service. Cast iron bodies are used for the low pressures and forged steel bodies for the high pressures.. Where especially quick heating is desired, thermic strips may be . used. For service under pulsating pressures as u-in. reciprocating engines and pun,DS Armstrong Special traps are r^` ommended. Armstrongs may be used for vacuum service with out special attachments. We furnish Armstrong separat ing traps for any service. We wel come a trial of an Armstrong under an' conditions and inquiries on traps for un usual conditions. Application: The installation of Arm strong traps is comparatively simple. Un like most traps, the inlet is at the bottom the outlet at the top. They should be set in a vertical position, and the more conveni ently located the better. They may be in stalled above the radiation if there is .suffi cient pressure to raise the water up and through the trap or one pound for every two feet of elevation. Armstrongs are non-return or separating traps and cannot be used to return conden sate to the boiler, though they may be used to advantage in connection with return traps. Users: There are probably more Arm strongs in service than any other mechani cally operated trap. A list of users includes many nationally known concerns, a large percentage of whom have adopted the Arm strong as standard equipment. Some have over a thousand in use. Durability as well as its greater reliability and efficiency are responsible for its extensive use. Con tinuous service without repairs for from four to ten years is common. No. SO Armstrong Trap keeping Unit Beaterfret ofcondcrmte and air General Service Cast Iron Traps PRESSURES TO 300 LBS. TRAP SIZE No. 30 No. 31 . No. 2 No. 25 No. 3 No. 4 "-`Pipe Connections........... ....... .......... Code............. *&#<*?*............... J-Dismet*....................... `Weight.:........... ^M**"nun* Prt*sure......... n - ` t; - . I Vv^v v. 5 10 . 15 ; -> 20 I M r.pucitv in oounds of k water per hour, at 30 ' these pressures............. 60 (These capacities and pressures also apply to the corresponding . special traps listed ' below). .100 125 150 160 240 300 A' $9.25 Oak w 5%' y/i ib. 125 lbs. w. $15.00 Red 6/4* 556' 7Vi lbs. 150 lbs. Vl or %' $20.75 Ash nr v/s 18 lbs. 300 lbs. i* $29.00 Hickory . Tvy 33 lbs. 300 lbs. l or 1%* $38.00 Fa 14* Wi` 45 lbs. 300 lbs. I1/; or 2" $55.00 Elm 163/4" 10* 74 lbs. 300 lbs. 799 1121 979 ~-817 768 , 459 257 282 1043 1465 1763 1541 1348 1337 571 625 471 1692 2289 . 2753 3268 3074 2534 1605 1817 1210 1245 811 614 4172 5862 7054 8056 7428 4181 3153 2507 1959 2020 1865 1593 6770 .9159 11013 13072 12297. 7352 5257 4514 4840 3811 3285 2579 21097 29638 28216 24654 . 21572 20672 16455, 14200 10755 11062 7474' 6371 SPECIAL TRAPS No. 30S No. 31S No. 2S No. 3S N6:4S Pipe Connections....,;. List prices............... Telegraph Code..:. Height oftrap........ Diameter...................... Weight.......'......... Maximum pressure........ Vi' . $14.25 ; ' Beech m' w. 11 lbs. 125 lbs. Vl" $20.00 Cedar 9W w' 13Vl lbs. 150 lbs. Vl or Vs $27.75 Pine iw (W 32 lbs. 300 lbs. 1 or V/4" 1V2 or 2' $45.00 Gum $75.00 Box-- Wi' . . ff/2* ' . 67 lbs. 300 lbs. w? 10* 114 lbs. 300 lbs. The special traps listed above'&re for use where there is a pulsation of pressure due to reciprocating engines or pumps Vi? drawing steam from a line. They have the same capacities and pipe connections as their equivalent standard traps. The capacity figures given above are continuous discharge figures at the differential indicated. The actual pressure at the trapinlet and back pressure in the return line should be used to obtain the pressure differential.