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jus. P. Marsh <S- Company Specialties, Heatin, tt Hvyflo Trap Dripping End of Main A 10 M* Dimensions Bc IK' 4' D Itt' Capacity in Pounds of Water Per Hour 'At 420# I# 900# 2# 1227# 3# 1467# 4# s# 1690#.. 1862# Marsh No. 4 Reflux Drip Trap A large capa city thermo static drip trap designed to meet the require ments of those who prefer a __ thermostatic Marsh No. k Reflux Drip Trap trap for dripping ends of mains, large risers, unit heaters and, small indirect heating units. Body is of heavy cast iron frith bolted cover and cleanout opening. Fitted with a heavy handspun phosphor bronze dia phragm of the double seal lock type having ample internal reinforcement. Seat is of brass. Suitable for pressures up to fifteen pounds, or for pressures up to-100 lb. when so specified. ' Unit Heater No. 4 Reflux Trap Applied to A Vacuum System. Note Seal Size K" l* i K' Dimensions AB c 5' 6 M' S%' 5 H*. 7' 6* 6'. rW *K' Ca cackle* At Press. 1 Press. 475# 950# . 750# 1050# 1500# 2100# 822 Jets, P. Marsh & Company Specialties, Heating Marsh Air Trap. A light weight air vent trap for use on vapor systems, having a large air outlet that permits rapid expulsion of air from the return system. Float mechanism is so arranged that it is impossible for water to come out of air outlet should it reach this point. Equipped with a copper float, brass mechanism and post and a Jen kins composi tion seat on the air outlet. Made in one inch size only, with onehalf inch air out let. Marsh Air Trap !________ Dimensions-------------A BCDE 9 ft* 754' 3 J4* 1ft* Itf' Pounds Pressure Cu.- Ft. Air per minute Capacity in Sq. Feet Capacities 'At l 2000 .1# 2# 3# . 36 8 6000. 12,000 16,000 4# 10 20,000 5# 12 24,000 Marsh Automatic Boiler Return Traps Can be installed on any vapor heat ing system with a minimum of head room above the boiler water line as will be noted from the installa tion diagram and dimensions. Will automatically re Morth Boiler Return Trap turn all water of condensation to the boiler prompt- ly and practically nois elessly, maintaining constant .water line in the boiler. The trap is very simple in construction consisting of a ball float, which, through a lever arm throws a counterweight which in turn operates the piston-like stems opening and closing the ball valves which operate within the combination strainer guides. There are no springs, sliding mechanisms, complicated adjustments and all mecha nism is enclosed within the trap. Like other Marsh heating specialties, the Marsh Boiler Return Trap is guaranteed for five years continuous satisfactory operation. Sq. Ft. 2000 4000 6000 8000 10000 ________Dimrnsinns ABcD 17J4* 17)4* 9A* . 2' 21' 21K* 11 Vi 2H' E V*' Ys F w Vs A ----------------------------- IfeSsr E __ 1J ( -- --C 823