Wilo Star-Z NOVA and Solar Rated Non-Return Valve Kit
The pump and the valve together, for Dux, Hills and Conergy solar hot water systems. Cheaper than buying the two separately.
What you receive
- One Wilo Star-Z NOVA circulating pump, new, in the original Wilo packaging, with insulation shell and Wilo-Connector plug
- One Dux, Hills and Conergy solar rated non-return valve
Why replace the non-return valve at the same time?
A non-return valve that has aged lets water flow backwards through the system at night, so the tank loses the heat it gained during the day and the pump runs against reverse flow. That shortens the life of a new pump. A standard non-return valve is not suitable — the valve in this kit is rated for the temperatures an open loop solar circuit reaches.
If the valve in your system was fitted at the same time as the pump you are now replacing, it is due.
Will this pump fit my system?
Fit is decided by the pump's dimensions and duty, not by the brand on the tank:
- Port-to-port: 84 mm thread to thread, Rp ½ pipe connections with G 1 union nuts. Measure your existing pump face to face — if it is 84 mm, this is a direct replacement.
- Maximum head: 1.0 m. Maximum flow: 0.4 m³/h. This is a low-duty circulator for close-coupled solar and domestic hot water recirculation, not a long-run or high-head pump.
- Open loop and potable water. The housing is brass (CW617N) and Wilo approve it for drinking water, so it suits open loop solar systems where the water from your taps passes through the pump, both flat plate and evacuated tube. If your system circulates glycol in a closed loop, you need a closed-loop circulator such as the Wilo Varios Pico-STG 15/1-7 instead.
- 240V (1~230 V, 50 Hz), 3–5 W running, with thermal insulation shell fitted as standard.
Not sure what you have? Email a photo of your existing pump to sales@solarhotwaterparts.com.au and we will confirm the right part before you buy.
Wilo Star-Z NOVA technical data
| Installation dimensions | |
|---|---|
| Port-to-port length L0 | 84 mm |
| Pipe connection, suction and discharge | Rp ½ |
| Union thread | G 1 |
| Hydraulic data | |
|---|---|
| Maximum delivery head | 1.0 m |
| Maximum volume flow | 0.4 m³/h |
| Maximum operating pressure | 10 bar |
| Fluid temperature | 2 °C to 95 °C |
| Ambient temperature | 2 °C to 40 °C |
| Maximum permitted water hardness | 3.57 mmol/l (20°dH) |
| Motor data | |
|---|---|
| Mains connection | 1~230 V, 50 Hz |
| Rated power P2 | 5 W |
| Power consumption P1 | 3 W to 5 W |
| Rated current | 0.05 A |
| Maximum speed | 3000 rpm |
| Protection class | IP42 |
| Insulation class | F |
| Cable gland | 1 x PG11 |
| Motor protection | Not required |
| Materials | |
|---|---|
| Pump housing | Brass, CW617N |
| Impeller | PPE/PS-GF30 |
| Shaft | Ceramic |
| Bearing | Carbon, synthetic resin-impregnated |
Installation and licensing
This product is new and supplied in the original packaging, subject to the manufacturer's warranty and to consumer guarantees under the Australian Consumer Law.
It must be installed by a licensed tradesperson as required by law. Failure to do so breaches the manufacturer's warranty, may result in injury or death, may jeopardise your insurance and may breach the relevant legislation. Check with your local authority for the licensing requirements that apply to plumbing and electrical work in your state.
| State or Territory | Plumbing licensing | Electrical licensing |
|---|---|---|
| NSW | www.fairtrading.nsw.gov.au | www.fairtrading.nsw.gov.au |
| ACT | www.accesscanberra.act.gov.au | www.accesscanberra.act.gov.au |
| QLD | www.qbcc.qld.gov.au | www.worksafe.qld.gov.au/electricalsafety |
| VIC | www.vba.vic.gov.au | www.esv.vic.gov.au |
| WA | www.demirs.wa.gov.au | www.demirs.wa.gov.au |
| SA | www.cbs.sa.gov.au | www.sa.gov.au |
| NT | www.ntepa.nt.gov.au | www.nt.gov.au |
| TAS | www.cbos.tas.gov.au | www.cbos.tas.gov.au |
For any question or technical support on this product, email sales@solarhotwaterparts.com.au.
*All images used in this listing are for illustrative purposes only.