Abstract: A sight gage for indicating the liquid level in a tank having tubular sight members includes a multipart sealing gland to prevent the gage from deteriorating because of corrosion and deposits appearing thereon.

Abstract: A gauge glass protector includes an annular grommet carried by a frustro-conical skirt and an inverted collector rim at the circumference of the skirt. A drainage hole for condensate is located at the juncture of the collector rim and the conical skirt for draining the collected liquid out of the trough formed between the skirt and the rim. The same device may be used as an aerosol mist collector by inverting it. In another embodiment of the invention the skirt may comprise a semi-circular flexible collar which when assembled has a frustro-conical shape. Another embodiment calls for a spiral wire attached to the sight gauge including a conical run-off trough at the point where the wire is tangential to the gauge.

Abstract: An improved steam boiler system includes an automatic means for injecting cool water into a steam bound boiler feed pump. In a first embodiment a pressure sensitive check valve detects the drop of pressure in the steam bound pump and in response thereto directs a cool water mist into the high side of the pump, thus reinitiating its operation. According to a second embodiment, cool water is sprayed into the pump in response to a drop of the water level in the boiler. In both embodiments, a vent line is used to bleed the high side of the centrifugal pump to a condensate tank in response to a drop of pressure in the pump. The vent line may be bled through a check valve or directly through a manual valve. Additionally, both embodiments employ a pressure sensitive valve in the boiler feed line, which shuts off the pump flow to the boiler whenever the pressure in the boiler exceeds the pressure at the output of the pump.

Abstract: An improved steam boiler system includes an automatic means for injecting cool water into a steam bound boiler feed pump. In a first embodiment a pressure sensitive check valve detects the drop of pressure in the steam bound pump and in response thereto directs a cool water mist into the high side of the pump, thus reinitiating its operation. According to a second embodiment, cool water is sprayed into the pump in response to a drop of the water level in the boiler. In both embodiments, a vent line is used to bleed the high side of the centrifugal pump to a condensate tank in response to a drop of pressure in the pump. The vent line may be bled through a check valve or directly through a manual valve. Additionally, both embodiments employ a pressure sensitive valve in the boiler feed line, which shuts off the pump flow to the boiler whenever the pressure in the boiler exceeds the pressure at the output of the pump.