Series EFP High Voltage Electrode Feedthroughs (8kV) with PEEK Insulator
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The integral electrode mounted in these feedthroughs enables specifiers to pass voltages up to 8kV in process enclosures, autoclaves, vacuum furnaces and reactor vessels to power heaters, electric motors and other devices needing high power supply.
Feedthroughs are available with three sizes of copper electrodes rated 40A, 100A and 200A at 8kV maximum. Stainless steel and nickel electrodes can also be specified.
Feedthroughs with copper electrodes have brass nuts and washers. Stainless steel nuts and washers are fitted to stainless steel and nickel electrodes.
Series EFP sealed electrode assemblies are supplied pre-torqued for immediate installation. Integral insulators are made from PEEK.
PEEK (Polyetheretherketone) is an engineering plastic used in environments such as aerospace, oil and gas, food processing, and semiconductor manufacture.
- Integral one piece PEEK insulator and sealant
- Copper, stainless steel or nickel electrodes
- Three sizes of feedthrough assembly
- Rated for use at 8kV at up to 200A
- Guide pressure range: Vacuum up to 500 bar
- Temperature range: -50°C to +250°C
- 316L Stainless steel body, 303 internal follower and cap; PEEK insulator
- Electrodes pre-installed in feedthrough and torqued ready for installation
| Standard Body Style ('A' Cap) | Threaded Extension ('B' Cap) | Weld Neck | Flanges |
|---|---|---|---|
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| Standard body style suitable for most applications. | Allows the gland to be terminated into the process as well as to a terminal head or conduit at the opposite end to the process. | Supplied without thread for permanent installation into the process by welding. Specify as 'WELD' for the thread size in the order code. |
For termination to a mating flange within the process, see Optional Flanges for details of the flanges available as standard. |
| Size 2 (1/4" Thread or equivalent) | Size 3 (1/2" Thread or equivalent) | Size 4 (3/4" Thread or equivalent) | |||
|---|---|---|---|---|---|
| Standard Thread Sizes | Electrode Diameter | Standard Thread Sizes | Electrode Diameter | Standard Thread Sizes | Electrode Diameter |
| 1/4" BSPT, 1/4" BSPP, 1/4" NPT | 3.2mm | 1/2" BSPT, 1/2" BSPP, 1/2" NPT | 6.35mm | 3/4" BSPT, 3/4" BSPP, 3/4" NPT | 12.7mm |
| Alternative Thread Sizes | Alternative Thread Sizes | Alternative Thread Sizes | |||
| M10x1.0, 7/16" UNF-20 | 3/8" BSPT, 3/8" BSPP, 3/8" NPT | M22x1.5, 3/4" SAE-16, 7/8" UNF-14 | |||
| M12x1.5, 1/2" UNF-20 | M14x1.5, 7/16" SAE-20, 9/16" UNF-18 | M24x2.0, 7/8" SAE-14, 1" UNF-14 | |||
| M16x1.5, 1/2" SAE-20, 5/8" UNF-18 | |||||
| M20x1.5, 9/16" SAE-24, 3/4" UNF-16 | |||||
| Style 'A' (Supplied as standard) | Description | Style 'B' (Alternative cap) | Description |
|---|---|---|---|
 STANDARD |
Standard Fitting with single thread for direct mounting into process. |  |
Standard Fitting with a Style B threaded extension for conduit/terminal head or enclosure connection. The thread form is the same as the process thread unless otherwise specified. If a different thread form is required, please specify after the 'B' in the order code, for example: If a B cap is used with a weld neck fitting, then the thread form must be specified. |
| Style | Example | Part Code | Maximum Compatible Body Size |
Outside Diameter |
Thickness |
|---|---|---|---|---|---|
| KF FLANGE | |
KF16 | Size 2 | 30mm | 5.08mm |
| KF25 | Size 3 | 40mm | 5.08mm | ||
| KF40 | Size 5 | 55mm | 5.08mm | ||
| KF50 | Size 5 | 75mm | 5.08mm | ||
| CF FLANGE |  |
DN16CF | Size 3 | 33.8mm | 7.6mm |
| DN25CF | Size 4 | 54.0mm | 11.9mm | ||
| DN35-40CF | Size 5 | 69.9mm | 12.7mm | ||
| DN50CF | Size 5 | 85.7mm | 16.0mm | ||
| DN63CF | Size 5 | 114.3mm | 17.3mm |
CF Flanges are non-rotatable (fixed) type and comply with ISO3669-2017.
KF Flanges are compatible to the ISO Standard 2861 Specification.
Many other styles of flange available on request (DIN, JIS, ANSI, etc.), contact TC for details.
Body Size, Pressure Guide and available Bore Sizes for BSPT, BSPP and NPT Threads2
| Body Size | Size 2 (1/4") | Size 3 (1/2") | Size 4 (3/4") | ||
|---|---|---|---|---|---|
| Sealant | PEEK | PEEK | PEEK | ||
| Voltage Rating | 8Kv | 8Kv | 8Kv | ||
| Electrode Material | Electrode Current Rating | Electrode dia. (mm) | The table indicates the available electrode sizes for each feedthrough body size. The maximum guide pressure value (in bar) at 20°C is shown for each sealant material according to element size1. These ratings are a guide and the suitability of any of the products described herein for a particular application is entirely at the discretion of the purchaser as being the best judge for that particular application. |
||
| Copper 316 Stainless Steel Nickel |
40A 10A 15A |
3.2 | 500 | ||
| Copper 316 Stainless Steel Nickel |
100A 15A 40A |
6.35 | 280 | ||
| Copper 316 Stainless Steel Nickel |
200A 30A 80A |
12.7 | 220 | ||
- The guide pressures shown for each type of sealant are at 20°C. Spectite® feedthroughs from TC have been designed to provide an efficient seal on the elements and restrain them from moving under pressure and vacuum. It is good installation practice to provide additional, mechanical restraint to the elements when differential pressure exceeds 50% of the feedthrough guide pressure value at 20°C. With an increase in temperature, a reduction in the maximum guide pressure value can be expected. These ratings are a guide and the suitability of any of the products described herein for a particular application is entirely at the discretion of the purchaser as being the best judge for that particular application.
- Other types of process connection are available, see Feedthrough Sizes.
| Size 2 (1/4" Thread or equivalent) | Size 3 (1/2" Thread or equivalent) | Size 4 (3/4" Thread or equivalent) |
|---|---|---|
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Spectite
Pressure and Vacuum Sealed Feedthroughs
from TC Measurement and Control Pty Ltd.
03 9543 8433
UXBRIDGE,
UB8 2YS,
United Kingdom