Document oD4vep0XVonaLzVmXqKZdQVXX

New York Air Valve Corporation 476-478 Broome Street New York THE "AlR-OUT" LINE Syphon thermostatic non-adjustable ` `Air-Out " valves, for eliminating air from steam radiators, operate by the expansion of a phosphor bronze diaphragm, soldered on the bottom of a brass float, containing a volatile liquid. This float is large in size, allowing ample capacity for the necessary pressure to operate the diaphragm. The seating pin at the top of float is made from nickel silver, as called for in United States Government specifications for Air Valves. Verdigris will not form on nickel silver--corrosion at the vent post is therefore reduced to a minimum. We do not use a "stamped out" base. Our bases are heavy bronze castings, in one piece, with no soldered parts to break off. Made also in straight pattern, threaded 34 and % in. for quick venting of cellar mains and risers. The best valve money and experience can produce and sold at reasonable prices. OTHER SPECIALTIES Carbon Post Automatic Air Valves. Key and Wood Wheel Air Valves. Adjustable Floor and Ceiling Plates. Steam and Altitude Gauges. Water Gauges. Pop Safety Valves. ' "Air-Out" Valves Guaranteed for Five Years 854 Ventilators W. F. Hirschman Co., Inc. Main Office: Buffalo, N.Y. Works: Le Roy, N.Y. New York N Y 205 East 42nd St. Philadelphia, Pi., 1338 Spring Garden St Baltimoee. M'd., 330 St. PauI Place Boston, Maes., 37 Pearl St. Chicago, III. 2539 East 73rd St. Deteoit/Mich., 97 W. Warren Ave. MANUFACTURERS ROOF VENTILATORS Principle of Operation of Wind-Electric Ventilator--When the wind is blowing sufficiently to remove the desired amount of air from the build ing being ventilated, the electric motor is still. In stantly, when the wind turbine moves below a previously determined number of revolutions, the electric motor starts automatically and carries the load. The entire apparatus is noiseless. Special Advantages--Besides the regular auto matic operation the motor may also be so connected as to give a maximum exhaust capacity (running full speed) by manual control. Effico Rotary Ball Bearing Ventilator Inetallation, Wind Driven (only) The Effico Wind Electric Alto Hat the Same A rtietic Lines and Pleasing Appearance. Lowest in Height of Rotary Ventilators by Over SO per cent Average. Detail of Effico Wind Electric Rotary Ball Bearing Ventilator ., Full Automatic Note.--Details of Wind Driven (only) Ventilator are Identical with Exception of Motor Unit. CAPACITIES OF EFFICO ROTARY BALL BEARING VENTILATORS . Both Wind Electric and Wind Driven (only)--Cubic Feet of Air Exhausted per Minute Wind Velocity. Miles per Hour Bold Type is Regularly Furnished Wind-Electric Capacity Temperature Difference in Degrees Fahrenheit in Building and Outside 0 10 20 30 0 10 20 30 0 10 20 30 12*In. Ventilator 18-In. Ventilator 24-In. Ventilator 5 350 440 515 560 600 650 950 1040 1020 1600 1780 1900 10 430 525 600 625 910 1050 1200 1300 1490 1900 2100 2300 30-In. Ventilator 36*In. Ventilator 42-In. Ventilator 5 1560 2300 2690 2900 2300 3400 3810 4100 3150 4500 5010' 5500 10 2300 3210 3490 3600 3250 4200 4720 5050 4390 5700 6300 6800 48-In. Ventilator 54-In. Ventilator 60-In. Ventilator 5 4000 5900 6700 7400 5100 7300 8450 9500 6500 9300 10600 11900 10 5900 7900 8900 9050 7650 9900 11000 11500 9200 12500 14000 14500 Effico Wind Electric Ventilator Dimensions Ventilator Sizes Corre sponding to Those in Table Opposite Dimensions-in inches--(See Diagram Above) Thickness ofMetal A BC D E Actual Size of Height Diaro. of Height to Ventilator for Base Storm Propeller Wind Elec. Type Blades Band Blades Gauge G.I. Hp. Cop- of Pfr- Motor Oz. Cowl Base Effico Wind-Electric Ventilator, Automatic Patented May 20. 1922; March 20. 1928; August 21. 1928. The Effico Wind Elec tric Ventilator, Full Automatic Recommended for those installations which require a definite minimum ex haust at all times or which 12 14 20 8 21% 32 24 22 16 18 19 26 10 28% 32 24 22 18 1/30 24 25 38 14 40 40 24 20 18 30 31 40 14 50 42 24 20 20 36 37 44 18 1 60 45 22 18 24 1/6 42 43 50 22 68 51 22 18 24 48 49 56 24 76 51 22 18 24 54 55 62 24 86 51 22 18 24 1/4 60 61 66 24 98 55 22 18 24- a uu appota bus to aujuowtno wenunune . or ivoo v, Q. - ---- sizes end is regularly supplied at capacities of 5 miles per hour wind and 10 deg. temperature difference rating. The Wind-Electric tnil exhaust minimum volume regardless of temperature difference or trind velocity. Other capacity can be supplied and the ventilator is adjustable to any constant capacity after installation. may require an unusually heavy exhaust at inter mittent periods. This is the regular Effico equipped with an auxiliary elec trically operated fan placed in the ventilator throat just below the regular fan. The throat is slightly enlarged to allow for the motor. For F Electric Ventilator Non-Automatic see second page following: 855