The 8500 STS may be used in a variety of storage tanks and is generally installed in the first course of the tank shell, about three feet (1 m) above the bottom of the tank. It may be used in fixed roof or floating roof tanks, as long as it is below the pin height at which the floating roof rests.

High Pressure Applications
In high pressure applications, such as spheres, horizontal cylinders or bullets, flanged models for 150 psig (1 MPa) and 300 psig (2 MPa) service are available.

Construction
The 8500 STS is designed to meet the high quality and long life required by the storage tank industry. For resistance to corrosive attack in most hydrocarbon service applications, the socket is constructed of 304 stainless steel. 316 stainless steel is utilized in the construction of the sheath and hex nipple.