N/A

N/A Thermoplastic Insulators with:
Resistance in excess of 10⁸ ohms at 70° F (21 °C) and 50% relative humidity.
Resistance in excess of 10⁶ ohms at 100° F (38 °C) and 90% relative humidity.

N/A Body Construction Materials — 316 Stainless Steel
Insulator — Molded Thermoplastic
O-ring Material — 90 Durometer Viton
Back-up Washer — Virgin TFE
Electrical Resistance of Insulators — 7.0 X 10⁸ Ω @ 10 Volts DC @ 70° F and 50% relative humidity. 1.0 X 10⁶ Ω @ 10 Volts DC @ 100° F and 90% relative humidity
Pressure Rating — 4000 PSIG @ 70° F (27,580kPa @ 21° C)
Temperature Rating — -40° F to +200° F (-40° C to +93° C)

Design
The Dielectric Tube Fitting must perform three primary functions:

1. Electrical insulation
2. Reliable fluid containment
3. Appropriate flow for line size

N/A


Commonly used in the Natural Gas Transmission industry, the Dielectric Fitting will prevent current flow resulting from Impressed Current Cathodic Protection Systems, static electricity or even lightning strikes, from reaching sensitive monitoring station equipment.

Impressed Current Cathodic Protection Systems involve the application of a low voltage, low amperage direct current to a pipeline and eventual transfer of corrosive effects to a typically underground anode bed.

If the current flow is not interrupted before reaching the monitoring station critical equipment could be damaged or rendered inaccurate.

By installing HOKE’s Gyrolok Dielectric Tube Fitting on impulse lines between the pipeline and the monitoring station, current flow is interrupted while full fluid flow is permitted.

N/A A “NO WRENCHING” label is placed on the hex of the nut in the insulation sections. Do not disconnect at this point. Instructions are provided with every HOKE Dielectric fitting.