Document 5kxkaNqVExoK1rZkk1k1X9jwJ

Hoffman Specially Co., Inc. Specialties, Healing TYPICAL INSTALLATION HOFFMAN "CONTROLLED HEAT" EQUIPMENT -1 <> r*V irrn--i-i t-r nrwi m-4 TYPICAL HOTFMAN CONTROLLED HfAT INSTALLATION. NOTB.--Loop discharge* into high end of return main. This results in seating airfrom high point in return instead of lout point. Point" W " should be at least Si in. above water line with Hoe. 0 and OS loops and 50 in. with Hoe. 05 and 04. ,The ..above drawing shows the typical application of Hoffman Products to a vapor- vacuum system--Hoffman "Controlled Heat." The.features of the No. 7 Adjustable Modulating Valve for balancing steam distribu tion arid radiator output and the accuracy of No. 8-A or 18-A Traps in controlling flow of condensation and air from the radiators without steam loss, positively control the room temperature to meet the requirements of the occupant. The basement specialties automatically control fuel consumption and protect the boiler from loss of water through the returns, without thought or attention on the user's part. AV "Controlled Heat" is adaptable and economically suited to any building where the required water line difference is available. The No. 11 Vapor Vacuum Valve is used for venting the return mains of vapor-vacuum systems or for other conditions where return of air through vent port must be prevented. The vent port is % in. in diameter. Pipe connection--% in. Maximum guaranteed operating pressure-- 15 lbs. No. 19 Quick Opening Radiator Valve is of the semi-packless type for vacuum pump installations or for vapor systems where modulation is not required. Made in % in. size only. Capacity--200 sq. ft. of radiation. Regularly furnished with lever handle. Wood wheels or Lock Shields on special order at no extra charge. Offset or straight extended stems for concealed units on order No. 19 Hoffman Radiator Valve at small extra charge. Angle pattern only. 798 No. U Hoffman Specialty Co., Inc.Specialties, Heating and Pumps. HOFFMAN-ECONOMY RETURN LINE VACUUM PUMPS The jet type vacuum producer used in these pumps is one of the simplest and best known methods for exhausting air and vapors. It has no moving parts and avoids close clearances so that loss of efficiency, due to wear, is reduced to a minimum. Pumps will handle 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, double suction, bronze impellers. Units of 12,000 sq. ft. and under have vertically split Vacuum Pumps volute pumps, with enclosed impeller, re movable bronze stand bearing and outboard Pump No. Capacity Sq. FL Dir. Cast Iron Rad. Water Cap. G. P. M. Air Cap. C. F. M. Motor H. P. 20. lb. Press. ball bearing. Operation is controlled by float switch and vacuum regulator. All sizes furnished in Duplex Units. When returns SV-0 1,500 3 1 Y1' are below pump SV-IA 3,500 7 3 Vs inlet an auxiliary SV-2 SV-2A SV-3A 5,000 7,000 12,000 9 13 15 3I 4i accumulator 7 I'A tank will permit SV-4 16,000 22 92 operation on SV-5 SV6 SV-7 20,000 26,000 40,000 28 35 60 12 3 15 5 21 5 float control only. All units SV-8 65,000 90 34 J'A completely as SV-9 100,000 140 50 10 SV-10 150,000 210 102 15 SV-11 250,000 350 130 25 sembled and wired ready for installation. pumps, 20 tbs. HOFFMAN-ECONOMY HORIZONTAL CONDENSATION PUMPS Horizontal Condensation Pumps are made in Styles "A"--0 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, botn 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. Dir. C .I. Radiation Pump and | Style No. B Pump and Style No. Disc. Press. Lbs. Sq. In. I0A 30A 31A 32A' 60A 6IA . 62A 64B 65B 65C 66B 66C 67B 67C 68C* 69C Capacity Table--Condensation Pumps--60 Cycle and Direct Current 3-s d0 u . I-aE ii 1 ** Qj 0.0 SI * -.1 8-S Q. u I^l SioJrod ii Q-J 5& 0.0 2x COE >. (S^TcStS 8- . u. liaS 1: i dd SI fine 1.000 10 2 1.750 100A 10.000 101A 10,000 10 20 Vs 1.750 200A 20.000 15 20 1.750 20IA 20.000 10 40 Vi 1.750 15 40 Vs 1.750 3.000 3.000 3.000 10 15 20 k5 Vs 1.750 102A 10.000 20 20 5 'A 1.750 I03B 10.000 25 20 5 Vs 1.750 104B 105B 10,000 10.000 30 20 40 20 1.750 1.750 1.750 1.750 202A 203B 205B 20,000 20.000 20.000 20 40 1 1.750 25 40 I'/l 1.750 40 40 2 1.750 Wi6.000 6.000 6.000 6.000 6.000 10 15 20 30 40 86,000 8 l'/i6.000 6.000 6.000 - 6.000 6.000 6.000 40 50 50 60 60 75 100 12 Vs 1.750 12 'Os 1.750 12 1.750 12 1 1.750 12 v/2 1.750 12 l'/2 3.500 12 2 1.750 12 2 3.500 12 3 1.750 12 3 3.500 12 3 3,500 12 5 3,500 I05C 106B I06C I07B 107C I09C 151A 152A I53B 155B I55C I57B 157C I59C 10.000 10.000 10.000 10,000 10.000 10.000 15,000 15.000 15.000 15.000 15.000 15.000 15.000 15.000 -40 50 50 60 60 100 15 20 25 40 40 60 60 100 20 20 2 20 2 20 3 20 3 20 5 30 30 30 1 30 2 30 2 30 3 30 3 30 5 3.500 1,750 3.500 1,750 205C 207B 207C 209C 20.000 20.000 20,000 20,000 40 60 60 100 40 2 40 3 40 3 40 5 3.500 1.750 3.500 3.500 3.500 3.500 300A 301A 30.000 30.000 .10 15 53 53 1.750 302A 30.000 20 53 1 1-.750 303A 30.000 25 53 1.750 1.750 1.750 1.750 1.750 1.750 304A 30.000 30 53 2 1.750 3.500 307C 30.000 60 53 5 3.500 1.750 3.500 308C 309B 30.000 30,000 75 100 53 T/i 1.750 53 10 1.750 3.500 Complete Tables and Specifications for Pumps up to 70,000 sq. ft. capacity. Given in Our General Catalogue 799