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- Plumbing
- Pipe Fittings and Couplings
- Dielectric Unions
Dielectric Unions
<p>Dielectric unions provide insulation between incompatible materials for joining them safely. They avoid electrolysis, which leads to corrosion or pipe failure. They are ideal for pipe sizes ranging from 3/4 to 4 inches. </p>
Gasket Kits
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ILF3007 Series Dielectric Unions
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B| Style | Model | Gasket Material | Inlet Size | Outlet Size | Price (ex. VAT) | |
|---|---|---|---|---|---|---|
| A | LF3007 3/4 | €67.61 | ||||
| B | LF3007 1/2 | €60.40 |
A| Style | Model | Hex Size | Pipe Size | Price (ex. VAT) | |
|---|---|---|---|---|---|
| A | 1/2 LF 3005-1/2A | €17.67 | |||
| A | 3/4 LF 3005-3/4A | €22.07 |
Dielectric Union, FIP x Solder
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DLF3100 Series, Dielectric Flange, FIP x Solder
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C| Style | Model | Body Material | Max. Pressure | Pipe Size | Price (ex. VAT) | |
|---|---|---|---|---|---|---|
| A | 2 1/2 LF3100 | €375.61 | ||||
| B | 3 LF3100 | €474.31 | ||||
| C | 2 LF 3100 2" | €348.53 |
RK-3000 Series Dielectric Union Repair Kit
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X| Style | Model | Item | Price (ex. VAT) | |
|---|---|---|---|---|
| A | KIT GA-G | €7.07 | ||
| B | KIT GA-D | €9.72 | ||
| C | KIT GB-A | €14.13 | ||
| D | KIT GA-B | €5.43 | ||
| E | KIT GA-F | €12.81 | ||
| F | KIT GA-R | €43.28 | ||
| G | KIT GA-P | €43.28 | ||
| H | KIT GA-Q | €49.47 | ||
| I | KIT GA-M | €19.00 | ||
| J | KIT GA-E | €10.15 | ||
| K | KIT GB-D | €25.64 | ||
| L | KIT GA-C | €7.94 | ||
| A | KIT GA-J | €7.94 | ||
| M | KIT GA-H | €7.94 | ||
| N | KIT GA-L | €15.01 | ||
| O | KIT GB-F | €49.00 | ||
| P | KIT GB-B | €15.91 | ||
| Q | KIT GA-A | €6.59 | ||
| R | KIT GB-C | €19.00 | ||
| S | KIT GB-E | €31.35 | ||
| T | INK-D-KIT | €7.94 | ||
| U | INK-A-KIT | €7.07 | ||
| V | INK-G-KIT | €9.27 | ||
| W | INK-E-KIT | €9.27 | ||
| X | INK-H-KIT | €10.58 |
RK-3100/3110/3200 Series Dielectric Union Repair Kit
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D| Style | Model | Price (ex. VAT) | |
|---|---|---|---|
| A | INS-KIT 5/8 | €11.05 | |
| B | INS-KIT 7/8 | €12.36 | |
| C | INS-KIT 3/4 | €12.36 | |
| D | INS-KIT 1/2 | €9.72 |
A| Style | Model | Inlet Size | Price (ex. VAT) | |
|---|---|---|---|---|
| A | 3004 1 1/4 | €78.62 | RFQ | |
| A | 3004 1/2 | €39.32 | RFQ |
3001A Series Dielectric Unions
AB| Style | Model | Gasket Material | Inlet Size | Outlet Size | Price (ex. VAT) | |
|---|---|---|---|---|---|---|
| A | 3001A 1 1/2 | €116.71 | ||||
| A | 3001A 1 1/4 | €68.42 | ||||
| A | 3001A 2 | €144.26 | ||||
| B | 3001A 1/2 | €23.29 | RFQ |
LF3008 Series Dielectric Unions
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C| Style | Model | Hex Size | Pipe Size | Price (ex. VAT) | |
|---|---|---|---|---|---|
| A | LF3008 3/4 | €68.09 | |||
| B | LF3008 1/2 | €47.38 | |||
| B | 3/4 LF3008 | €55.85 | |||
| C | LF3008 1 | €63.80 |
LF3100 Series Dielectric Unions
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B| Style | Model | Inlet Size | Outlet Size | Price (ex. VAT) | |
|---|---|---|---|---|---|
| A | LF3100M3 2 1/2 | €526.45 | RFQ | ||
| B | LF3100M3 3 | €722.06 | RFQ | ||
| B | LF3100M3 4 | €1,911.08 | RFQ |
LF3110 Series Dielectric Unions
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C| Style | Model | Item | Pipe Size | Price (ex. VAT) | |
|---|---|---|---|---|---|
| A | LF3110 2 1/2 | €632.24 | |||
| B | LF3110 3 | €613.11 | |||
| C | LF3110-LF 3 | €868.76 | RFQ |
DUXLC Dielectric Pipe Fittings
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HDUXL Dielectric Pipe Fittings
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BLF4001E Series Dielectric Unions
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C| Style | Model | Gasket Material | Inlet Size | Outlet Size | Price (ex. VAT) | |
|---|---|---|---|---|---|---|
| A | LF4001E 2 | €250.27 | ||||
| B | LF4001E 3/4 | €34.03 | ||||
| C | LF4001E 1/2 | €34.03 | ||||
| C | LF4001E 1 | €75.27 | ||||
| C | LF4001E 1 1/2 | €178.34 | ||||
| C | LF4001E 1 1/4 | €122.73 |
A| Style | Model | Inlet Size | Outlet Size | Price (ex. VAT) | |
|---|---|---|---|---|---|
| A | LF3005A 1/2 | €27.44 | |||
| A | LF3005A 3/4 | €26.14 |
LF3001A Series Dielectric Unions
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C| Style | Model | Gasket Material | Hex Size | Inlet Size | Outlet Size | Pipe Size | Price (ex. VAT) | |
|---|---|---|---|---|---|---|---|---|
| A | 1/2 LF 3001A-1/2" | €19.08 | ||||||
| A | 3/4 LF 3001A-3/4" | €22.56 | ||||||
| A | 1 LF 3001A-1" | €33.60 | ||||||
| A | 11/4 LF 3001A-1 1/4" | €54.13 | ||||||
| A | 11/2 LF 3001A-1 1/2" | €75.39 | ||||||
| A | 2 LF 3001A-2" | €99.23 | ||||||
| B | LF3001A 1 | €50.02 | ||||||
| B | LF3001A 2 | €175.62 | ||||||
| B | LF3001A 1 1/2 | €142.06 | ||||||
| B | LF3001A 1 1/4 | €83.43 | ||||||
| B | LF3001A 3/4 | €28.22 | ||||||
| C | LF3001A 1/2 | €29.72 |
LF3006 Series Dielectric Unions
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H| Style | Model | Body Material | Gasket Material | Hex Size | Inlet Material | Inlet Size | Outlet Material | Outlet Size | Pipe Size | Price (ex. VAT) | |
|---|---|---|---|---|---|---|---|---|---|---|---|
| A | LF3006 2 | €215.77 | |||||||||
| A | LF3006 3/4 | €54.67 | |||||||||
| A | LF3006 1 | €71.93 | |||||||||
| B | LF3006 1/2 | €41.24 | |||||||||
| C | 1 1/2 LF3006 | €86.14 | |||||||||
| D | 2 LF3006 | €176.59 | |||||||||
| E | 1/2 LF3006 | €29.96 | |||||||||
| F | 3/4 LF3006 | €33.54 | |||||||||
| G | 1 LF3006 | €44.26 | |||||||||
| H | LF3006 1 1/4 | €60.32 |
LF301 Series Dielectric Unions
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B| Style | Model | Inlet Size | Outlet Size | Price (ex. VAT) | |
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| A | LF301 1 | €18.14 | |||
| A | LF301 1 1/2 | €42.45 | |||
| A | LF301 1 1/4 | €27.89 | |||
| B | LF301 1/2 | €11.22 | |||
| A | LF301 2 | €58.96 | |||
| A | LF301 3/4 | €11.27 |
LF3004 Series Dielectric Unions
Watts LF3004 Series dielectric unions are used in commercial and industrial applications to prevent accelerated corrosion and deterioration in piping systems caused by galvanic and stray currents. They are installed between pipes made from dissimilar metals. These dielectric unions feature steel / iron / galvanised malleable iron / malleable iron & galvanised steel construction for structural rigidity and long service life. They have polysulfone insulation to prevent electrical hazards during operations and come with Buna-N gaskets for secure & reliable sealing between the pipes.
Watts LF3004 Series dielectric unions are used in commercial and industrial applications to prevent accelerated corrosion and deterioration in piping systems caused by galvanic and stray currents. They are installed between pipes made from dissimilar metals. These dielectric unions feature steel / iron / galvanised malleable iron / malleable iron & galvanised steel construction for structural rigidity and long service life. They have polysulfone insulation to prevent electrical hazards during operations and come with Buna-N gaskets for secure & reliable sealing between the pipes.
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E| Style | Model | Body Material | Gasket Material | Hex Size | Inlet Material | Inlet Size | Outlet Material | Outlet Size | Pipe Size | Price (ex. VAT) | |
|---|---|---|---|---|---|---|---|---|---|---|---|
| A | LF3004 1 1/4 | €95.91 | |||||||||
| B | LF3004 1 1/2 | €145.76 | |||||||||
| B | LF3004 1/2 | €47.93 | |||||||||
| B | LF3004 1 | €71.93 | |||||||||
| A | LF3004 3/4 | €54.67 | |||||||||
| C | 11/2 LF3004 | €87.37 | |||||||||
| D | LF3004 2 | €139.29 | |||||||||
| A | 1 1/4 LF3004 | €66.56 | |||||||||
| E | 1/2 LF 3004-1/2 | €45.65 | |||||||||
| E | 3/4 LF 3004 3/4 | €52.06 | |||||||||
| E | 1 LF 3004-1 | €88.71 |
LF3002 Series Dielectric Unions
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B| Style | Model | Price (ex. VAT) | |
|---|---|---|---|
| A | LF3002 1 | €32.71 | |
| B | LF3002 3/4 | €46.51 |
Dielectric Unions
Watts dielectric unions are used in HVAC equipment, hot water storage tanks, and piping system for reducing the deterioration and accelerated corrosion caused due to stray and galvanic currents. These unions are capable of withstanding temperatures and pressures up to 180 degrees F and 250 psi, respectively. They are offered in FIP, MIP & solder connection options, to allow easy installation on pipe sizes ranging from 1/2 to 4 inches, on Raptor Supplies.
Frequently Asked Questions
What is stray current?
Stray current produces a high number of anodes & cathodes that can inadvertently enter an alternate (but unintended) path and create corrosion in the piping system.
What is the function of tailpieces in a dielectric union?
Tailpieces allow connecting ends of two dissimilar pipe systems so that liquid can be safely transported with minimal leakage.
How does the dielectric union break continuity?
When dielectric unions are connected between two dissimilar pipes, they ground the electric current and break continuity for complete insulation between the two environments.
How to install a dielectric union between steel and copper pipes?
- Wrap several layers of sealing tape over the threads of the steel pipe.
- Connect the threaded end of the dielectric union to the steel pipe and turn it clockwise using a pipe wrench.
- Slide the union nut over the end of the copper pipe and place the plastic insulator over the copper pipe.
- Install the copper solder adapter onto the copper pipe and sweat adapter using a propane torch.
- Allow the pipe to cool.
- Quickly slide the rubber gasket between the union nut & body and assemble it.
- Inspect to ensure a watertight connection.
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