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RV Plumbing Kit (Now includes check valve)



SolaExchange has developed the RV Plumbing Kit to simplify the connection of your Heliatos Solar Water Heating Panels and circulating pump to your hot water storage tank. This Kit is suitable for Boats, Motor-Homes, Caravans or Beach-Houses and utilises the Plain Connection method. The Kit’s tube is 3/8″ John Guest (more information below) and the fittings have been selected to provide Australian customers with a Kit that is compatible with Australian plumbing systems. This Kit can be easily adapted to suit practically all insulated hot water tanks, cylinders or water storage heaters. It operates by drawing the cold water from the bottom of your tank where the cold water enters, or at the bottom drain valve. The RV Kit is designed to make it easy to connect the MH-38 panel and the circulating pump and deliver solar heated water back to your insulated tank where it is stored for domestic hot water use and supplied to your hot taps. This Kit  offers Australian customers just about everything you need to make installing your Heliatos system simple. If your tank has outlets other than 1/2″ BSP male please contact SolaExchange and we will provide the right adaptors to make the RV Kit fit. To avoid heat loss the tubes must be insulated. SolaExchange does not stock tube insulation products contact us for insulation tips

Note: The straight compression unions that attach the tube to the panel can be substituted for 90 degree elbows for an extra cost of $12.20. Any extra adaptors SolaExhange provides will be at the price in our website shop

Please read the Important information below before purchasing the RV Plumbing Kit

What’s in the RV Kit                                                                                                                                                           

2 x Brass compression unions  

2 x  Brass bspf Tees

1 x bspm – baspf- reducing bush

1 x 3/8 pushfit check valve

10 metres of John Guest 3/8″ tube 

I x 3/8 JG pushfit –  bspm

1 x 3/8″ JG pushfit –  bspf

4 x JG locking clips

6 x 3/8″ tube inserts (for reinforcing the tube ends in hot water applications)

2 x nylon ferrules (for replacing the brass ferrules in the comression unions when connecting JG tube to the panel)                                                                                                                                              

John Guest 3/8″ Tube and Fittings                                                                                                                                                       Approved for use with potable (drinking) water. This tube is rated to 150 psi (6 bar) at 150 degrees Fahrenheit (65 Celsius) That’s 30 psi (5 bar) higher than the 12 mm John Guest tube that is sold in boat and caravan supplies stores. This tube curves to a fairly tight radius especially when gently heated with a heat gun or hair dryer. It can be more easily routed than the 12 mm version. It is suitable for the Heliatos Solar Water Heating Panel when there is no more than 5 meters distance from the panel to the hot water tank. That’s a total return length of 10 metres. 12 metres being the outside maximum

If you would like buy the 3/8″ John Guest tube and fittings or the RV Plumbing Kit from SolaExchange there is is some important information you should consider first.

3/8″ John Guest tube and fittings are not “watermarked” as is the 12mm John Guest system. The tube and fittings in both systems are made from the same materials. If you search the specifications you will find the 3/8″ tube is rated to a higher pressures at same temperatures as the 12 mm. Both are rated for use in drinking water applications

The RV Kit is designed for owners who wish to install their own Heliatos Solar Water Heating System on their own vessel, vehicles.and caravans. If you take responsibility for your own installation you may consider the 3/8″ John Guest plumbing as a viable option

If you need your Solar Hot Water System system to meet the Australian Standards for domestic (home) installations then you will probably need to use copper tube, install a tempering valve and have your system professionally installed by a plumber.

SolaExchange freely provides this information with the clear intent of offering the best available options to its Australian customers. By offering 3/8″ John Guest tube and acetel plumbing fittings SolaExchange takes no responsibility in the case of failure of the 3/8″ tube or fittings or any fault due to its installation

This product is supplied for use with the Heliatos solar water heating system only !. Although the 3/8″ John Guest system is made from the same materials as the 12 mm John Guest tube and fittings that are available in stores stocking boating and RV accessories and the tube is rated to higher pressures at the same temperatures but it is not “water marked” as is the 12 mm JG system. Therefore the responsibility for installing this product rests solely with the customer and those persons installing it


Additional information

Weight 0.75 kg
Dimensions 40 × 30 × 10 cm