Document 93zO8dmxkz8NJmrawLOZDV1Mq

Hoffman Specialty Co., Inc. Specialties Hean^r TYPICAL INSTALLATION HOFFMAN "CONTROLLED HEAT" EQUIPMENT NOS. 20 AND 21 HOFFMAN THERMOSTATIC STEAM TRAPS Pressure Range 0 to 100 lb. Without Change or Adjustment. The Hoffman Steam Trap Body is of strong, rugged all bronze construction. The diaphragms in the thermostat, the valve pins and valve seat are all made of. the same non-corrosive alloy which has been successfully used for diaphragms in Hoffman Valves for a number of years. The alloy withstands high temperature steam, and repeated action without softening or cracking. It also withstands the scoring action of steam. . A strainer is built into the trap body permitting ready removal for cleaning. All renewable parts are interchange able, permitting replacement without adjustment of any sort. The trap is built to give maximum service with minimum attention and when repairs or cleaning are required the work can be quickly done. The Hoffman Steam Trap normally has a wide open vent port which is maintained until all air and condensation is relieved from the system, after which steam contact with the thermostat closes the port. No hand operated by passes are required to vent air from the system. The trap cannot air-bind or freeze. Nos-HO and St Hoffman Thermostatic Steam Trap The discharge capacity is dependent upon differences between, the temperature of condensation delivered to the trap and steam temperature, the greater the difference the larger the capacity of the trap. The following table gives continuous discharge capacities in pounds per hour. NO. 20 TRAP Pressure, lbs. per sq. in........... 10 30 50 70 90 too to Temperature Drop 20.'. 275 550 715 820 900 925 375 Temperature Drop 35............. 725 1075 1380 1675 1830 1860 950 No. 20 Trap haa Y in. pipe connections. % in. port. Weight .it, lb. No. 21 Trap has */, in. pipe connections, in. port. Weight 3% lb. Write for Descriptive Circulars 824 NO. 21 TRAP 30 50 70 90 100 725 925 1085 1190 1225 1410 1860 2250 2490 2550 jfjfffman Specialty Co., Inc. Specialties, Heating and Pumps HOFFMAN-ECONOMY RETURN LINE VACUUM PUMPS ^.Yheiet type vacuum producer used in these pumps is one of the simplest and best methods for exhausting air and vapors'. It has no moving parts and avoids close A i rances so that loss of efficiency, due to wear, is reduced to a minimum. Pumps will 'vih die extremely hot water and are smooth and quiet in operation. " '^All units, of 16,000 sq. ft. and over have horizontal split case pumps with enclosed, V -hie; suction, bronze impellers. Units of 12,000 sq. ft. and under have vertically split - 011 Table--Vacuum Pumps volute pumps, with enclosed impeller, re movable bronze stand bearing and outboard Water Cap. G. P. M. Air Motor H. P. Cap. C. F. M. 20. lb. Press. ball bearing. Operation is controlled by float switch and vacuum regulator. All sizes furnished in Duplex Units. When returns .3 7 9 13 18 22 26 35 60 90 140 210 350 - SjJJJjrpraSure 3V-0, 10 lbs. 1 3 ,V4z* 3 4i 7 9 21 'h 12 3 15 5 21 5 34 m 50 10 102 15 130 25 All other standard are below pump inletan auxiliary accumulator tank will permit operation on float control only. All units completely assembled and wired ready for installation. pumps, 20 lbs. K HOFFMAN-ECONOMY HORIZONTAL CONDENSATION PUMPS ? Horizontal Condensation Pumps are made in Styles ''--o to 20 lb. pressure--"B --"C" and "D" for 35 to " 100 lb. pressure. All units have bronze fitted, enclosed 'impellers. Styles A-B and C have vertically split case-- Style D horizontal split case. Style A pumps have out board ball bearing and self-lubricating, renewable bronze stand bearing. Style B and C have double outboard bear ings, ring oiling at driving end and ball bearing at opposite . end, both readily renewable. Style D has double outboard ring oiling bearings, both easily renewable. Float switch mechanism is positive with bronze float arm supported by two liberal bearings. All units are completely assembled and wired, ready for installation. style"A" Pump and Style No. Capacity Sq. Ft. D ir. C. I. Radiation Pump Cap. G.p.m. Motor || H .P . Speed R.p.m. Pump and Style No. Capacity SDql.r .FtC. I. Radiation 1Disc. Press. | Lbs.Sq.ln.il Motor H. P. Speed R.p.m. Pump and Style No. Capacity Sq. Ft. Dir. C. I. Radiation Motor H. P Capacity Table---Condensation Pumps--60 .Cycle and Direct Current *4Qs. . U. 8- d U ? SI Qj i* so JM i * QJ 0.0 li I0A 30A 31A 32A ' 60A 6IA 62A 64B 65B 65C 66B 66C 67B 67C 68C 69C 1.000 3,000 3.000 3.000 10 2 10 - 5 15 5 20 5 Vs 1.750 Vs 1.750 Vz J.750 Vs 1.750 6.000 6.000 6,000 6,000 6,000 10 12 1,750 15 . 12 '/z 1,750 20 12 Vs 1,750 30 12 1 1,750 40 12 1 Vz 1,750 6,000 6,000 6.000 6.000 6,000 6.000 6.000 40 50 50 60 60 75 100 i*12 3.500 12 1,750 12 2 3.500 12 3 1,750 12 3 3.500 12 3 3.500 12 5 3.500 I0OA iOlA I02A I03B I04B 105B 105C I06B 106C 107B 107C 109C 151A 152A I53B I55B 155C 157B 157C 159C 10.000 10 20 Vs 1,750 200A 10.000 15 20 ,# 1,750 201A 10,000 20 20 1.750 202A 10.000 25 20 1.750 203B 10.000 30 20 1/z 1.750 10.000 40 20 1/2 1.750 205B 10.000 10.000 10.000 10,000 40 50 50 60 20 1/2 3,500 20 2 1,750 20 2 3,500 20 3 1,750 205C 207B 207C 209C \10,000 60 20 3 10.000 100 20 5 15.000 15 30 15.000 20 30 3,500 3,500 1.750 1.750 300A 301A 302A 303A 15,000 25 30 1 1,750 15.000 40 30 2 15.000 40 30 2 15.000 60 30 3 15.000 60 30 3 15.000 100 30 5 1.750 3.500 1.750 3.500 3,500 304A 307C 308C 1 309B 20.000 20,000 20.000 20,000 10 15 20 25 20,000 20.000 20,000 20.000 20.000 40 40 60 60 100 30.000 30.000 30.000 30.000 10 15 20 25 30.000 30.000 30.000 30.000 30 60 75 100 40 Vz 1.750 40 J.750 40 I 1.750 40 Wz 1.750 40 2 40 2 40 3 40 3 40 5 1,750 3,500 1,750 3.500 3.500 53 Vz 1.750 53 Vs 1.750 53 1 1.750 53 IVz 1.750 53 2 * 1.75053 5 3.500 53 7Vi L750 53 10 1,750 Complete Tables and Specifications for Pumps up to 70,000 sq.ft, capacity. Given in Our General Catalogue 825