Acrylic / PVC Repair Kit - IPS Weld-On 810 Epoxy
Acrylic / PVC Repair Kit - IPS Weld-On 810 Epoxy is backordered and will ship as soon as it is back in stock.
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IPS Weld-on 810 2-part adhesive. Great for repairs of plastic & acrylic parts under pressure. Cures white. Great on spa cracks and holes. Simply prepare the area, fill and sand back. It can then be painted or colour-matched by paint specialist.
Note: Due to short shelf-life, we pick-up as needed. We usually have them within hours from the distributor, so pay no attention to "Backorder"
Can be used for many plastic repairs including:
- Repairs & Adhering to PVC, CPVC, ABS, Styrene, Acrylic, FRP, Concrete, Clay
- Shower Bases
- Acrylic or fibreglass spa and pool shells
- Other plastic parts and fittings
Two-component, high strength, low VOC reactive adhesive. Product can withstand very high pressure and is high impact resistant. Great for repairing cracks or leaky pipe valves and fittings. It has excellent gap-filling property which is ideal for fabricating fittings and joining saddles to pipe. Also good for bonding large diameter PVC and CPVC pipe and fittings.
More Info:
- Withstands temperatures of -33°C to 93°C
- Set Time: 1 hour
- Cure Time: 2 hours
- Full Strength: 24 hours
Substrates Preparation:
Bonding surfaces must be clean and dry. If the surfaces are hard and glossy, abrading (sanding) and priming with a degreasing solvent is recommended. Chlorinated solvents, methyl ethyl ketone, acetone and/or rubbing isopropyl alcohol may be used to
remove grease and/or dirt.
Installation:
1. Assemble materials for the job: WELD-ON 810 kit, clean mixing sticks, applicators (spatula or stiff brush), sandpaper, clean wiping cloth, cleaning solvent and gloves.
2. Prepare joints by sanding to roughen mating surfaces. Wipe surfaces clean with a dry rag or solvent cleaner. Do not soften surfaces with solvent cleaner.
3. WELD-ON 810 kit has a mixing ratio of 100:13 and both components are packaged and pre-measured to this ratio. Add Component B (small container) to Component A (large container). Mix thoroughly and apply to each mating surface. Pot life and
working time is about 30 minutes at 70 °F (21 °C).
4. Assemble parts and allow squeeze out to remain as filler.
5. Allow the joined surfaces to cure undisturbed. Recommended set time is 1 hour. Recommended cure time is 2 hours to reach 80% bond strength (resin layer cures to a hard gel), 24 hours to reach near ultimate strength. The cured layer is a tough, chemical
and water resistant plastic.
Note: Warmer weather will shorten pot life and cure time. Colder weather will increase the time for both. Applying heat may speed up the cure time. When joining CPVC for service temperatures over 150 °F (65 °C), please contact WELD-ON for more information.
Repairs:
Replacing a failed joint with new material and taking greater care in the joining process is always preferred. This repair is for leaks only and ideal for area where the joint cannot be cut out. Do not use this method if the pipe has separated from the fitting.
1. Assemble materials for the job: WELD-ON 810 kit, clean mixing sticks, applicators (spatula or stiff brush), fiberglass cloth mat cut to desirable size for wrapping the leaked pipe, sandpaper or emery, clean wiping cloth, and gloves.
2. Turn off water pressure. Dry off the bonding area and abrade it well with sandpaper and wipe clean.
3. Prepare WELD-ON 810 adhesive. Add Component B (small container) to Component A (large container) and mix thoroughly.
4. Apply a generous coat of adhesive mixture to leakage and surrounding area.
5. Apply the adhesive mixture to the mating surface of fiberglass cloth. Wrap cloth around the leaked pipe. Some adhesive should squeeze up through cloth.
Note: Fiberglass cloth is recommended for added structural strength to the leaked pipe. Good bonding result is also achievable without using the cloth.
6. Apply an additional coat of WELD-ON 810 adhesive to the top surface.
7. Let cure for a minimum of 4 hours at 70 °F (21 °C). Overnight or 24-hour cure is desirable before re-pressurizing the systems
Not recommended for use on Neoprene, Delrin, PTFE, Silicone, Polypropylene, Polyethylene and other Polyolefins or joints with an interference fit.
In plumbing, named sizes are not the actual measurements. A pipe called “50mm” or “2"” does not measure 50 mm across. Instead, it follows nominal sizing, an internationally-standardised naming system.
Use the Outside Diameter (OD) to check your pipe against fittings. Below is a quick reference for common spa & pool pipe sizes:
| Imperial Name | Metric Name | Pipe Diameter (OD) |
|---|---|---|
| 1" | 25 mm | ~33.4–33.7 mm |
| 1.5" | 40 mm | ~48.1–48.4 mm |
| 2" | 50 mm | ~60.2–60.5 mm |
| 2.5" | 65 mm | ~75.2–75.5 mm |
These are nominal sizes and are designed to fit matching fittings — not to measure exactly what their name suggests.
Understanding Plumbing Sizes & Nominal Measurements
Plumbing sizes can be confusing. PVC and many other pipe systems use nominal sizes—the size is a name, not the exact measured dimension. This convention is used across most pool and spa systems so that pipes and fittings remain compatible.
Why pipe sizes don’t match the measurements
The Nominal Pipe Size (NPS) system standardises pipe dimensions so that pipes, fittings, valves, and accessories interoperate. Plumbers work with these nominal names every day, but DIYers can be tripped up if they try to match by a tape-measure alone.
How to Measure Pipe Correctly
-
Pipe size is identified by:
- The pipe’s Outside Diameter (OD).
- The fitting’s Inside Diameter (ID) (socket opening).
- Pipe Class / Schedule (e.g., Class 9, 12, 18 or Sch 40) relates to wall thickness and therefore the Internal Diameter (ID) and pressure rating.
- The outside diameter of a fitting is not useful (wall thickness varies by manufacturer).
PVC Pressure Pipe AS/NZ 1477 Dimensions1:
Common nominal sizes with typical outside diameters and indicative inside diameters by class.
| Imperial Name | Metric Name | Outside Diameter (OD) | Class 9 IDº | Class 12 IDº | Class 18 IDº |
|---|---|---|---|---|---|
| 1/2" | 15 mm | ~21.2–21.5 mm | 18.3 mm | 17.8 mm | |
| 3/4" | 20 mm | ~26.6–26.9 mm | 23.7 mm | 22.4 mm | |
| 1" | 25 mm | ~33.4–33.7 mm | 30.5 mm | 29.8 mm | 28.1 mm |
| 32 mm | ~42.1–42.4 mm | 38.5 mm | 37.5 mm | 35.4 mm | |
| 1.5" | 40 mm | ~48.1–48.4 mm | 45.2 mm | 44.1 mm | 42.8 mm |
| 2" | 50 mm | ~60.2–60.5 mm | 55.2 mm | 53.7 mm | 50.5 mm |
| 65 mm | ~75.2–75.5 mm | 68.9 mm | 67.0 mm | 63.2 mm | |
| 2.5" | ~73 mm |
- º Internal diameters vary slightly by manufacturer and class.
- 1 Not all pool/spa fittings match these dimensions exactly. Some do not follow Australian or international standards. Chinese spas may use proprietary fittings.
Hose & Tube Dimensions
Common flexible hose sizes used in pool/spa systems (approximate IDs).
| Imperial Name | Metric Name | Inside Diameter (ID) |
|---|---|---|
| 3/8" | 9–10 mm | ~9 mm |
| 3/4" | 19 mm | ~19 mm |
BSP – British Standard Pipe Thread Sizes
BSP thread names are also nominal. The thread OD will not equal the nominal name.
| BSP Thread Size Naming | Outside Diameter (mm / inch) | TPI |
|---|---|---|
| 1/16" BSP | 7.7 mm / 0.304" | 28 |
| 1/8" BSP | 9.7 mm / 0.383" | 28 |
| 1/4" BSP | 13.16 mm / 0.518" | 19 |
| 3/8" BSP | 16.66 mm / 0.656" | 19 |
| 1/2" BSP / 15 mm | 20.99 mm / 0.825" | 14 |
| 5/8" BSP | 22.99 mm / 0.902" | 14 |
| 3/4" BSP / 20 mm | 26.44 mm / 1.041" | 14 |
| 7/8" BSP | 30.20 mm / 1.189" | 14 |
| 1" BSP / 25 mm | 33.25 mm / 1.309" | 11 |
| 1-1/4" BSP | 41.91 mm / 1.650" | 11 |
| 1-1/2" BSP / 40 mm | 47.80 mm / 1.882" | 11 |
| 2" BSP / 50 mm | 59.61 mm / 2.347" | 11 |
| 2-1/4" BSP | 65.71 mm / 2.587" | 11 |
| 2-1/2" BSP | 75.18 mm / 2.960" | 11 |
| 3" BSP | 87.88 mm / 3.460" | 11 |
| 4" BSP | 113.03 mm / 4.450" | 11 |
| 5" BSP | 138.43 mm / 5.450" | 11 |
| 6" BSP | 163.83 mm / 6.450" | 11 |
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