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Used with water heaters for separating two metal pipes of different materials and to prevent galvanic corrosion. Available in different connection types
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B| Style | Model | Inlet Size | Outlet Size | Price (inc. VAT) | |
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| A | LF301 1 | £15.24 | |||
| A | LF301 1 1/2 | £35.66 | |||
| A | LF301 1 1/4 | £23.43 | |||
| B | LF301 1/2 | £9.42 | |||
| A | LF301 2 | £49.52 | |||
| A | LF301 3/4 | £9.46 |
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C| Style | Model | Body Material | Max. Pressure | Pipe Size | Price (inc. VAT) | |
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| A | 2 1/2 LF3100 | £315.49 | ||||
| B | 3 LF3100 | £398.39 | ||||
| C | 2 LF 3100 2" | £292.75 |
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B| Style | Model | Inlet Size | Outlet Size | Price (inc. VAT) | |
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| A | LF3100M3 2 1/2 | £442.18 | RFQ
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| B | LF3100M3 3 | £606.48 | RFQ
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| B | LF3100M3 4 | £1,605.19 | RFQ
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H| Style | Model | Body Material | Gasket Material | Hex Size | Inlet Material | Inlet Size | Outlet Material | Outlet Size | Pipe Size | Price (inc. VAT) | |
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| A | LF3006 2 | £181.23 | |||||||||
| A | LF3006 3/4 | £45.92 | |||||||||
| B | LF3006 1/2 | £34.64 | |||||||||
| A | LF3006 1 | £60.42 | |||||||||
| C | 2 LF3006 | £148.33 | |||||||||
| D | 1 1/2 LF3006 | £72.35 | |||||||||
| E | 1/2 LF3006 | £25.17 | |||||||||
| F | 3/4 LF3006 | £28.18 | |||||||||
| G | 1 LF3006 | £37.17 | |||||||||
| H | LF3006 1 1/4 | £50.66 |
A| Style | Model | Inlet Size | Outlet Size | Price (inc. VAT) | |
|---|---|---|---|---|---|
| A | LF3005A 1/2 | £23.05 | |||
| A | LF3005A 3/4 | £21.95 |
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C| Style | Model | Gasket Material | Hex Size | Inlet Size | Outlet Size | Pipe Size | Price (inc. VAT) | |
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| A | 3/4 LF 3001A-3/4" | £18.95 | ||||||
| A | 11/4 LF 3001A-1 1/4" | £45.46 | ||||||
| A | 2 LF 3001A-2" | £83.34 | ||||||
| B | LF3001A 2 | £147.51 | ||||||
| B | LF3001A 1 1/4 | £70.08 | ||||||
| B | LF3001A 3/4 | £23.70 | ||||||
| A | 1/2 LF 3001A-1/2" | £16.02 | ||||||
| A | 1 LF 3001A-1" | £28.22 | ||||||
| A | 11/2 LF 3001A-1 1/2" | £63.32 | ||||||
| B | LF3001A 1 | £42.01 | ||||||
| B | LF3001A 1 1/2 | £119.32 | ||||||
| C | LF3001A 1/2 | £24.96 |
A| Style | Model | Hex Size | Pipe Size | Price (inc. VAT) | |
|---|---|---|---|---|---|
| A | 1/2 LF 3005-1/2A | £14.84 | |||
| A | 3/4 LF 3005-3/4A | £18.54 |
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D| Style | Model | Price (inc. VAT) | |
|---|---|---|---|
| A | INS-KIT 1/2 | £8.17 | |
| B | INS-KIT 7/8 | £10.38 | |
| C | INS-KIT 3/4 | £10.38 | |
| D | INS-KIT 5/8 | £9.28 |
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 (inc. VAT) | |
|---|---|---|---|---|---|---|---|---|---|---|---|
| A | LF3004 1 1/2 | £122.43 | |||||||||
| B | LF3004 1 1/4 | £80.56 | |||||||||
| A | LF3004 1 | £60.42 | |||||||||
| A | LF3004 1/2 | £40.26 | |||||||||
| B | LF3004 3/4 | £45.92 | |||||||||
| C | LF3004 2 | £117.00 | |||||||||
| D | 11/2 LF3004 | £73.38 | |||||||||
| B | 1 1/4 LF3004 | £55.91 | |||||||||
| E | 1 LF 3004-1 | £74.51 | |||||||||
| E | 3/4 LF 3004 3/4 | £43.72 | |||||||||
| E | 1/2 LF 3004-1/2 | £38.35 |
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B| Style | Model | Price (inc. VAT) | |
|---|---|---|---|
| A | LF3002 3/4 | £39.06 | |
| B | LF3002 1 | £27.48 |
Watts LF3003 Series dielectric unions are installed at the junction of pipes with varying metal compositions, such as water heaters or pumps, to isolate the metals and reduce potential corrosion caused by electrolysis. These unions effectively maintain water quality and extend the lifespan of plumbing systems by preventing leaks and deterioration due to the chemical reactions caused by metal interaction. The brand's LF3003 Series dielectric unions safeguard water distribution systems, ensuring reliability and durability. They come with a comprehensive assembly consisting of a union nut, two tailpieces and a gasket. This combination creates a robust barrier against electric currents, effectively preventing galvanic corrosion. They have a design with a female iron pipe thread to female brass pipe thread connection, facilitating seamless integration and secure attachment between different types of pipes. These dielectric unions have Buna-N gasket, preventing leakage.
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D| Style | Model | Body Material | Gasket Material | Hex Size | Inlet Material | Inlet Size | Outlet Size | Pipe Size | Price (inc. VAT) | |
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| A | LF3003 1 1/4 | £152.21 | ||||||||
| B | LF3003 2 | £277.88 | ||||||||
| C | 2 LF3003 | £154.90 | ||||||||
| C | LF3003 1 1/2 | £130.77 | ||||||||
| D | 11/4 LF3003 | £92.40 | ||||||||
| C | LF3003 1/2 | £32.41 | ||||||||
| C | LF3003 3/4 | £39.35 | ||||||||
| C | LF3003 1 | £50.80 |
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C| Style | Model | Hex Size | Pipe Size | Price (inc. VAT) | |
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| A | LF3008 3/4 | £57.19 | |||
| B | LF3008 1/2 | £39.80 | |||
| B | 3/4 LF3008 | £46.91 | |||
| C | LF3008 1 | £53.58 |
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C| Style | Model | Gasket Material | Inlet Size | Outlet Size | Price (inc. VAT) | |
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| A | LF4001E 2 | £210.22 | ||||
| B | LF4001E 3/4 | £28.59 | ||||
| C | LF4001E 1 | £63.23 | ||||
| C | LF4001E 1 1/4 | £103.09 | ||||
| C | LF4001E 1/2 | £28.59 | ||||
| C | LF4001E 1 1/2 | £149.80 |
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B| Style | Model | Gasket Material | Inlet Size | Outlet Size | Price (inc. VAT) | |
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| A | LF3007 3/4 | £56.79 | ||||
| B | LF3007 1/2 | £50.74 |
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B| Style | Model | Gasket Material | Inlet Size | Outlet Size | Price (inc. VAT) | |
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| A | 3001A 1 1/4 | £57.47 | ||||
| A | 3001A 2 | £121.17 | ||||
| A | 3001A 1 1/2 | £98.03 | ||||
| B | 3001A 1/2 | £19.56 | RFQ
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A| Style | Model | Inlet Size | Price (inc. VAT) | |
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| A | 3004 1 1/4 | £66.03 | RFQ
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| A | 3004 1/2 | £33.03 | RFQ
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X| Style | Model | Item | Price (inc. VAT) | |
|---|---|---|---|---|
| A | KIT GA-C | £6.67 | ||
| B | KIT GA-B | £4.56 | ||
| C | KIT GA-M | £15.96 | ||
| D | KIT GA-L | £12.61 | ||
| E | KIT GA-R | £36.35 | ||
| F | KIT GA-Q | £41.55 | ||
| G | KIT GA-J | £6.67 | ||
| H | KIT GB-F | £41.15 | ||
| I | KIT GB-E | £26.33 | ||
| J | KIT GB-C | £15.96 | ||
| K | KIT GB-B | £13.37 | ||
| G | KIT GA-G | £5.94 | ||
| L | KIT GB-A | £11.87 | ||
| M | KIT GA-F | £10.76 | ||
| N | KIT GA-P | £36.35 | ||
| O | KIT GB-D | £21.53 | ||
| P | KIT GA-D | £8.17 | ||
| Q | KIT GA-H | £6.67 | ||
| R | KIT GA-A | £5.54 | ||
| S | KIT GA-E | £8.53 | ||
| T | INK-D-KIT | £6.67 | ||
| U | INK-F-KIT | £8.88 | ||
| V | INK-A-KIT | £5.94 | ||
| W | INK-J-KIT | £43.03 | ||
| X | INK-C-KIT | £6.67 |
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C| Style | Model | Item | Pipe Size | Price (inc. VAT) | |
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| A | LF3110 2 1/2 | £531.05 | |||
| B | LF3110 3 | £514.98 | |||
| C | LF3110-LF 3 | £729.71 | RFQ
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| Model | Item | Price (inc. VAT) | |
|---|---|---|---|
| LF305 3/4 | BR9GQA | £12.69 |
| Model | Item | Price (inc. VAT) | |
|---|---|---|---|
| 3002 3/4 | BR6ZUA | £31.39 | See Details |
When copper is used with carbon steel or galvanised steel, dielectric unions must be used to electrically insulate each material. But when copper is connected with stainless steel, a brass / bronze fitting can provide sufficient electrical separation between the two materials.
When dielectric unions are connected between copper and steel piping, they ground the electric current and break the continuity for complete insulation between the two environments.