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f Pumps The Nash Engineering Company South Norwalk, Conn., U. S. A. Sales and Service Offices In all Principal Cities Jennings Return Line Vacuum Heating Pumps Standard with the heating industry for over sixteen years. They remove air and con densation from the return lines of vacuum steam heating systems, discharging the air to atmosphere and returning the water to the boiler. Two independent units are combined in a single casing--an air unit and av water unit. Impellers of both are mounted on the same shaft. The pump is bronze fitted throughout. Supplied either direct connected to standard electric motors, for belt drive, or for steam turbine drive. For continuous or automatic operation against pressures up to 40 lbs. Sup plied standard in capacities up to 300,000 sq. ft. E.D.R. Complete data in Bulletin No. 85 on request. Jennings Vapor Turbine Vacuum Heating Pumps The Jennings Vapor Turbine Heating Pump combines all of the advantages of the standard return line, heating pumps with a new type of drive, a specially designed low pressure tur bine which operate directly on steam from the heating mains on any system, requiring a differential of only 5 in. of mercury, and returns that steam to the heating system with practically no heat loss. L This pump affords the safety and economy which goes with a continuous condensation return and steady vacuum, and at no cost for electric current. Furnished standard in ca pacities up to 30,000 sq. ft. E.D.R. Complete data in Bulletin No. SOS on request. Condensation Pump and Receiver Removes condensation from radiators.-, in return line steam heating systems and pumps condensation back to the boiler. They are sturdy and compact in construc tion, and combine receiving tank, pump and driving motor in a single assembly. Bronze fitted throughout, with Tobin bronze shaft. Impeller is of special design adapted to hand ling hot water with highest efficiency. Jennings Condensation Pumps are fur nished in standard sizes with capacities rang ing from 4 to 200 g.p.m. of water. For serving up to 150,000 sq. ft. of equivalent direct radiation. Complete data in Bulletin No. 165 on request. 732 Pumps The Nash Engineering Company South Norwalk, Conn., U. S. A. Sales and Service Offices in all Principal Cities Centrifugal Pump Made in standard and suction (self-priming) types. For circulating hot and cold water; boosting city water pressure; handling water in air washing and conditioning; handling ash sluicing water, etc. Compact--motor armature and pump im peller are mounted on the same shaft. Simp lified--no bearings in pump casing, one stuf fing box. Accessible--impeller removable without disturbing piping or shaft alignment. Self-priming types will handle air or gas con tinuously with liquid being pumped, and can be operated intermittently without foot valve. Supplied in 1 , 1 2, 3, 4, 6, and 8 in. sizes with capacity up to 2000 g.p.m. Heads up to 300 ft. Complete data in Bulletins 155, 159 and 161, on request. Suction Sump and Sewage Pumps Jennings Suction Sump Pumps are self priming centrifugals for , handling seepage water and liquids reasonably free from solids. The Suction Sewage Pumps are equipped with a non-clog type impeller for liquids containing solids. Suction piping only is submerged. Centrifugal impeller and vacuum priming rotor are both mounted on same shaft that carries rotor of the driving motor, forming a single moving element and rotating without metallic contact. These pumps will handle air or gas with liquid being pumped, and because of selfpriming feature are installed entirely outside of pit. This affords perfect accessibility for inspection or cleaning. Capacities to meet all requirements. Complete data in Bulletins 159 and 161, on request. Sewage Ejector For pumping unscreened sewage or drain age from basements below street sewer level; handling crude sewage from low level dis tricts; pumping effluent, sludge and other heavy liquids. The Jennings Sewage Ejector is of exclusive pneumatic design, no sewage passing through the pump. Air is furnished by the Hytor Compressor at operating pressure, and com pressor operates only when air is required. Reciprocating compressors, air valves, high pressure air storage tanks, and pressure re ducing valves have all been eliminated. Furnished in standard-sizes for handling from 30 to 1500 g.p.m. Heads up to 50 ft. Complete data in Bulletins 103 and 108, on request. 733.