Reltech SunSol SS50 Solar Pump - Astralpool E140 Retrofit - 0.5hp
Reltech SunSol SS50 Solar Pump - Astralpool E140 Retrofit - 0.5hp is temporarily out of stock and will ship as soon as it's available.
Don't Guess - Ask Us!
Don't Guess - Ask Us!
Not sure if it’s the right part? Send us a message and a photo of what you’re replacing, or what you need, and we’ll help make sure you get the right part the first time.
Delivery and Shipping Info*
Delivery and Shipping Info*
Free Shipping over $99 for most products. Choose Express Post for fastest shipping!
Reltech SunSol SS50 Solar Pump - Astralpool E140 Retrofit - 0.5hp
Reltech SunSol SS50 Solar Pump - Astralpool E140 Retrofit - 0.5hp is temporarily out of stock and will ship as soon as it's available.
The Reltech SunSol SS50 Solar Pump 0.5HP pool pump is a high-quality AstralPool E140 retrofit pump, commonly used as a replacement for older AstralPool and Hurlcon pump models where a reliable single-speed pump is still preferred.
Australian made. Not a cheap Chinese knock-off.
The Reltech SunSol SS Series is Australian made and built for harsh local conditions. These are not cheap generic Chinese knock-offs. They are proper Australian-made pumps from a long-established manufacturer with deep roots in the local pool industry.
Reltech originally made the plastic wet-end parts for Hurlcon prior to Hurlcon becoming AstralPool. That history is one of the reasons the SS50 is such a logical retrofit choice for older Astral and Hurlcon pump installations.
The SunSol SS Series uses the same wet-end technology as the PR Series, but with a more cost-effective motor. That makes it a good option where you want an Australian-made retrofit pump at a sharper price point, while still keeping the familiar wet-end design and plumbing compatibility.
If you are replacing an older AstralPool E140, E140, E 140, Astral E-Series 0.50HP, or some related older Astral / Hurlcon pump models, the Reltech SunSol SS50 is one of the main retrofit options in Australia.
Common Replacement / Compatibility References
This pump is commonly searched for or matched against the following model references:
- Reltech SunSol SS50
- Reltech SunSol SS 50
- Reltech SS50
- Reltech SS 50
- SunSol SS50 pump
- SunSol SS 50 pump
- SS50 pump
- SS 50 pump
- AstralPool E140
- AstralPool E 140
- Astral E140
- Astral E 140
- E140 pump
- E 140 pump
- AstralPool E-Series
- Astral E Series
- E Series pump
- Hurlcon E140 equivalent
- 0.50HP pool pump
- 1/2HP pool pump
- 0.50HP solar pump
- 1/2HP solar pump
Why Buy a Reltech Instead of a Cheap Generic Import?
- Australian made
- Built for Australian conditions
- Not a cheap Chinese knock-off
- Longstanding Australian pool industry history
- Proven retrofit option for older AstralPool and Hurlcon pumps
- Same wet-end technology as the PR Series
- Reliable, serviceable, and well known in the Australian market
- Sharper price point than the PR Series while still retaining Australian-made wet-end design
What This Pump Is Good For
- Standard residential pool filtration systems
- Small swimming pools needing reliable flow and lower to medium head pressure
- Older Astral / Hurlcon pump replacements
- Solar pool heating systems
- Heat pump circulation duties
- Above-ground pools, spas, plunge pools, and smaller in-ground pools
- Installations using either 40mm or 50mm PVC connections, depending on the setup
Why Many People Choose the SunSol SS50 as an E140 Retrofit
- Popular replacement for E140 / E 140 pumps
- Australian-made quality
- Same wet-end technology as the PR Series
- Quiet operation and low operating costs
- Clear lid for fast visual basket checks
- Service-friendly union-style connections
- Good balance of performance, durability, and value
- Suitable for both 40mm and 50mm PVC pipe connection setups
Important Retrofit Notes
Retrofit does not always mean every old pump will be 100% identical in every measurement, cable position, or union arrangement. In this context it generally means this pump is commonly used to replace the same class and plumbing footprint of older pumps such as the E140 and related models, usually without major plumbing changes.
Online references show the AstralPool E140 is the 0.50HP E-Series model. Current Reltech material places the SunSol SS Series in the small-pool, spa, solar-heating, and heat-pump circulation space, using the same wet-end technology as the PR Series. As always, check your existing pump label and plumbing before ordering.
That said, we still recommend checking:
- Union style and thread type
- Centreline height and available equipment space
- Pipe size at suction and discharge
- Electrical supply suitability
- Whether your old pump was a true 0.50HP unit
If you are unsure, compare your existing pump label and photos before ordering.
Specifications
- Model: Reltech SunSol SS50 / SS 50
- Series: SunSol SS Series
- Horsepower: 0.50HP
- Voltage / Phase: 240V / 1 Phase
- Power Lead: 2m flex with 10A 3-pin plug
- Port Suitability: 40mm or 50mm pipe connection setup
- Maximum Water Temperature: 45°C
- Noise @ 1 metre: approx. 64 dBA
- Warranty: 2 Year Limited Warranty
Construction & Features
- Heavy-duty one-piece pump body
- Corrosion-resistant engineering grade thermoplastic construction
- UV-stabilised materials for outdoor conditions
- Continuous-duty motor
- Low-noise and energy-efficient operation
- Extra-large strainer basket
- Easy-remove clear inspection lid
- Designed for low to medium head pressure applications
- Built-in thermal overload protection
- High-performance silicon carbide mechanical seal
- A.B.S. quick connect couplings for easier installation and servicing
- On some models, built-in check valve reduces reverse flow through the pump
Common Search Terms
This product may also be searched as:
Reltech SunSol SS50 pump, Reltech SunSol SS 50, Reltech SS50, Reltech SS 50, SunSol SS50 solar pump, SunSol SS 50 solar pump, AstralPool E140 replacement, Astral E140 retrofit pump, AstralPool E 140 replacement, E140 pump replacement, E Series 0.50HP pump replacement, Australian made pool pump, 0.50HP pool pump Australia, 1/2HP solar pump, solar heating pump, heat pump circulation pump.
Who This Pump Suits
This pump suits pool owners wanting a quality Australian-made single-speed replacement for an older Astral / Hurlcon pump without dropping into a cheap unknown import. It is especially popular where people want a reliable, quieter, good-value pump for everyday solar heating, heat pump circulation, spas, plunge pools, and smaller pool systems.
Please Check Before Ordering
Because older pumps were sold over many years and under multiple brand names, always check your existing pump label, horsepower, plumbing size, and overall footprint before purchase. Some older installations may have been modified over time.
If you are replacing an E140 / E 140 / E-Series 0.50HP style pump, this is one of the main retrofit options people look for.
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) |
|---|---|---|
| 1/2" | 15mm | ~21.2–21.5 mm |
| 3/4" | 20mm | ~26.6–26.9 mm |
| 1" | 25 mm | ~33.4–33.7 mm |
| 1.5" | 40 mm | ~48.1–48.4 mm |
| 2" | 50 mm | ~60.2–60.8 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. These are based on PVC Pressure Pipe AS/NZ 1477 Dimensions1.
- 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.
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).
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 |
Payment & Security
We accept: Visa, Mastercard, Amex, Apple Pay, Google Pay, ShopPay, Paypal, Zip, Afterpay
Your payment information is processed securely. We do not store credit card details nor have access to your credit card information.
PS