ESP/ST Series Armored Level Gauge

ESP/ST Series Armored Level Gauge

ESP/ST Series Armored Level Gauge

ESP/ST Series Level Gauge


The KENCO Armored Level Gauge (Model ESP or ST) is a rugged tubular liquid level gauge that offers maximum impact from mechanical stress and impact. Product benefits include lower installation costs, reduced maintenance, unobstructed visual indication for your application. The gauge is adaptable to many different types of process connections. Armored frame and 90 degree instrument tees are available in a wide variety of materials. Wetted materials are limited to the O-Ring material, PTFE sight tube holder, and glass. The level gauge will operate in a medium pressure range up to 500 PSI. The ESP series offers extra glass protection from an outer tube of polycarbonate, which surrounds the gauge glass.

Construction Features

Armored Gauge Frame

The process piping is supported by the gauge frame. This frame protects the glass tube from mechanical stress and impact. The frame is available in powder epoxy-coated carbon steel, stainless steel, fiberglass, or PVC.

Sight Tube Holder

The tube holders isolate the process fluid from the gauge frame. They are normally provided in PTFE. Other materials are available, such as type 316 SS or Alloy 20.

Sight Tube

Standard material is borosilicate glass, however, any clear tubing may be used.

Sight Tube Shield

Outer protective tube is normally supplied in clear polycarbonate tubing which has a high impact strength (lzod impact range: 12-16 feet, lb./in.). Other materials may be supplied.

Lower Installation Costs

A one piece gauge is easily installed. Does not require multiple tank connections or expensive pipe required with reflex type gauges.

Easy to Read Liquid Level

A one piece gauge has no blind spots and the slotted frame provides see-through viewing of the liquid.


Gauge Style

  • ST Armored Liquid Level Gauge with Single Sight Tube
  • ESP Armored Liquid Level Gauge with High Impact Polycarbonate Shield Surrounding Sight Tube

Frame Material

  • CSZinc Coated Carbon Steel
  • S4304 S.S.
  • S6316 S.S.

Flange Sizes Available

  • Standard sizes are 1″,1.5″, and 2″.

*Consult factory for other size options.

Sight Tube Material

  • HPHigh Pressure Glass(Standard)
  • HWHeavy Wall Glass
  • RLRed Line Glass
  • ACAcrylic Tubing
  • PVCTransparent PVC Tubing
  • PCPolycarbonate Tubing
  • FEPFEP Tubing (1″ ST Models Only)


  • VFluorocarbon
  • AAflas 150
  • BBuna-N
  • EPEthylene Propylene
  • KKalrez
  • TEFEP Encapsulated Silicone

90° Connector Sizes

  • 1/2″ – 2″ Sizes are available either threaded or flanged

90° Connector Material

  • Zinc Plated Carbon Steel, 304 S.S., or 316 S.S. All are available PTFE lined

Additional Options

  • TVDThreaded Vent and Drain. Specify size when ordering.
  • FVDFlanged Vent and Drain. Specify size when ordering.
  • LXPolycarbonate Height scale in feet, inches
  • SSStainless Steel Height scale in feet, inches
  • IIlluminator