Cyclopedia of heating, plumbing and sanitation; a complete reference work . Pig, 121. Pump Regulator Place.] at Sufficient Height to Raise Water-Line tPoint Desired. process is repeated. In order to work satisfactorily, the trap shouldbe placed ;• # least •! feet above the water-level in the boiler, and the 143 134 HEATING AND VENTILATION. pressure in the returns must always be sufficient to raise the waterfrom the receiver to the trap against atmospheric pressure,-which istheoretically about 1 pound for every 2 feet in height. In practicethere will he inoiv or less friction toovercome, and su
Cyclopedia of heating, plumbing and sanitation; a complete reference work . Pig, 121. Pump Regulator Place.] at Sufficient Height to Raise Water-Line tPoint Desired. process is repeated. In order to work satisfactorily, the trap shouldbe placed ;• # least •! feet above the water-level in the boiler, and the 143 134 HEATING AND VENTILATION. pressure in the returns must always be sufficient to raise the waterfrom the receiver to the trap against atmospheric pressure,-which istheoretically about 1 pound for every 2 feet in height. In practicethere will he inoiv or less friction toovercome, and suitable adjustments mustbe made for each particular case. Fig. 124 >1i«i\\s another form of trapacting upon the same principle, exceptthat in this ease the steam valve is oper-ated by a bucket or float inside the pipe connections are practically the same as with the trap just described. Return traps are more commonlyused in smaller plants where it is desired pig 122 K,,tnrn Trap wilh W(„. avoid the expense and care of a pump. ing Parts External. Damper=Regulators. Every heating and every power plantshould he provided with automatic means for closing the damperswhen the steam pressure reaches a certain point, and for openingthem again when the pressure drops. There are various regulatorsdesigned for this purpose, a
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