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Heating Systems Specialties Armstrong Machine Works Representatives in All 851 Maple Street, Three Rivers, Mich. Principal Cities Armstrong offers two types of traps for heating, air conditioning, and steam distri bution service. Standard Inverted Bucket Traps, the type originated by Armstrong, are non* airbinding and self-scrubbing. They are used for low, medium, and high pressure service where relatively little air must be handled along with the condensate. Their free-floating lever design makes it possible to open very large discharge orifices com pared with the size of the trap itself. Armstrong Blast Traps are used where large amounts of air must be vented quick ly when steam is first turned on. They have several advantages over the conven tional float and thermostatic trap. . 1. The Armstrong Blast Trap has but a single orifice to be maintained tight against the full pressure differential. 2. Positive action. The discharge valve in an Armstrong Blast Trap is either wide open or tight shut. Fast opening and fast closing prevent wire-drawing. 3. Handies dirt. There are no dead spots in an Armstrong Trap in which dirt can settle and interfere with the operation of the trap. Cross-section of No. 800, 811, 818 and 818 traps for straight- through pipe connections. Cross-section of No. 801 trap for standard angle pipe connections. Side Inlet Traps Trap Size No. 600 No. 811 No. 812 No. 813 No. 801 Pipe Connectionsf..... List Price (Regular)^. ............ List Price (Blast Trap)................ Telegraph Code (Regular)............ Telegraph Code (Blast Trap)....... Dimension A........................... B................................ C................................ M D................................ ** E............................... Number of Bolts.......................... Diameter of Bolts........................ Weight....................................... Maximum Pressure. Ibs................ W or%' <7.00 x/iJmIO.0O <8.50 <11JO Aloe Brown Aloette Brownette v/s V/f W 5' 6 ' 6* 'A* 5'/, lb.. 250 Vi'rV/ <16.00 <18.00 Cherry Cherette 5Ys0 8W w *6* vm 13i/2lbs. 250 or } <22.00 <24.00 Dawn Dawnette T MW W * 6' Vi? 25 Ibs. 250 Vi0 or 3// <7.00 $8.50 Arrow Arrowette VA0 6m 2*ds* '14' 6 'A0 Continuous discharge capacity in lb of water per hour at pressure indicated, tor more complete information see the Capacity Chart in Armstrong Steam 1 rap Book. , 5 10 15 9 20 3 30 3 50 CL 70 100 -) 125 200 250 450 560 640 690 500 580 660 640 680 "See Note at right. , 830 950 1060 880 1000 840 950 860 950 720 760 1600 1900 2100 1800 2050 1900 2200 1800 2000 1200 1300 2900 3500 3900 3500 4000 4100 3800 3600 3900 3200 3500 450 640 690 500 660 640 680 at right. 1224 . UNIT HUMIDIFIERS Steam Type Armstrong Steam Type Unit Humidi fiers offer a low-cost, practical method of preventing the evils of winter heating'dry air. Improve worker comfort and safety; prevent drying out of materials. Write for new Bulletin No. 158. Armstrong Machine Works Healing Systems Specialties No. 818 No. 818 No. 811 No. 800 No. 811 No. 818 No. 818 4. The wearing parts in all Armstrong Traps are identical in design, material, and precision workmanship with parts used in Armstrong Forged Steel Traps for pres sures up to 2400 psi and total temperatures of 850 F. Armstrong Steam Trap Book. This 36 page book gives complete information on all sizes and types of Armstrong Traps. It also contains 17 pages of data on the subject of tr^p selection, installation, and maintenance. A free copy will be mailed on request. No. 811-816, Blast Type Armstrong Steam Type Humidifiers For use during the heating sea son, when relative humidity is low, moisture absorbing materials dry out, and static electricity accumulations are sources of fires and explosions. Operation is automatic and de pendable. Relative humidity is maintained within close limits. Operating costs are very low, installation costs moderate, and maintenance costs are low. Both air operated and electric ally operated models available with capacities to 850 lb steam per hr. Send for Bulletin 158. Trap Size Pipe Connections............................ List Price (Regular).................. List Price (Blast Trap)................... Telegraph Code (Regular).............. Telegraph Code (Blast Trap)......... Height.............Dimension!)......... Diameter......... ** A......... Wall Thickness " C......... Diameter of Bolts........................... Number of Bolts............................ Weight........................................... Maximum Pressure, lb................... 5 10 Continuous discharge (5 capacity in lb of water 20 per hour at pressure 3 30 indicated. For more s 50 complete information. it 70 tee the Capacity 100 Chart in the Arm- 3 125 strong Steam l rap 150 Book. 200 250 Bottom Inlet Traps No. 211 No. 212 No. 213 Vi0 < 9.25 $10.75 Aspen wAspette Hy,' A" W 630 950 1060 880 1000 840 950 860 950 810 860 760 W <17.00 Birch Birette 8* 5* A* 8 ID^Ib 1600 1900 2100 1800 2050 1900 2200 1800 2000 1500 16CC 1300 <20J5 <2275 Walnut Walette WIO*/4 6 191b 250 2900 3500 3900 3500 4000 4100 3800 3600 3900 3500 3200 3500 No. 214 1* <29.00 $31.50 Hemlock Hemictte 1 r 32 lb 250 4800 5800 6500 6000 6800 6300 6000 6200 6700 * 5700 5700 ' No. 215 1 or I'/," $38.00 $40JO Larch Larette %14" 47 lb 250 7600 9000 10000 8500 9800 9000 9200 10400 10900 9500- 97TS1 7000 No. 216 %%r $60.00 Tamarack Tamrette \w163/4' &: 12 801b 250 14500 17300 19200 18500 18000 18200 18300 18000 20000. 18500 !7e.fS5 19000 1225