Patent ID: 9417161
Filing Date: 2016-08-16
CPC Classification: G01F,G01N

Claim Text:
1. A drainable sight glass assembly to view the condition of fluid when disposed within a vessel, the drainable sight glass assembly comprising: a sight glass housing including an upper disk layer having a first diameter and a first receptacle, a lower disk portion having a second diameter and a second receptacle, and a substantially transparent wall portion connecting the upper disk layer to the lower disk portion; an upper valve connected to the first receptacle, the upper valve for controlling fluid into the sight glass housing; a lower valve connected to the second receptacle for controlling fluid flow out of the sight glass housing; and a measurement assembly adapted to determine the level of fluid in the sight glass housing; the sight glass housing having a frustoconically shaped interior that tapers to a minimum diameter at a lower end substantially equal to the diameter of the lower valve; and the upper valve having one port connected to the sight glass housing, and one port connected to the measurement assembly.