Yes. However, pressure testing with high pressure air can be dangerous if not operate properly. And any tests with air must only be done by a competent-trained engineer who has to be confirmed with the RIFENG technical team before testing.

Yes. RIFENG Multilayer Pipe is suitable for such an application.

RIFENG Multilayer Pipe can be used in a variety of connections and is very easy to install, but we still recommend asking operators with professional skills to install.

RIFENG Multilayer Pipe, also called PAP, the high-quality RIFENG Multilayer Pipe for drinking water and heating installations consist of inside and outside layers of cross-linked polyethylene and a core of aluminium. All layers are permanently bounded together by means of intermediate adhesive layers to form a single product. A special welding technique guarantees a maximum of safety.

RIFENG Multilayer Pipe unites the advantages of plastic and metal pipes. The inner and outer layers of cross-linked polyethylene provide flexibility and lightness. The smoothness of the inner cross-linked polyethylene layer reduces flow noise transmission and prevents corrosion. The longitudinally overlapped welded aluminium layer ensures the dimensional stability of the pipe and prevents oxygen penetration. The aluminium layer is also crucial for the strength and the thermal expansion of the pipe. With the permanent bond between the cross-linked polyethylene layers and the aluminium layer, the linear expansion of the pipe is determined by the expansion factor of the aluminium which roughly corresponds to that of a metal pipe. RIFENG Multilayer Pipe offers a high degree of flexibility and durability, combining with high pressure and temperature resistance.

RIFENG PEX pipes are allowed to be buried directly in soil or concrete. For safer and faster installation, we recommend using pre-sleeved PEX pipes.

They all meet the same performance standard, but their manufacturing processes are completely different.

PEX A. Peroxide method-It involves introducing peroxide (a form of oxygen) into HDPE before forming HDPE to achieve the highest degree of cross-linking.

PEX B. Silane method-It is the most common manufacturing method.

PEX C. Irradiation method- It is not as widely applied as the first two methods.

Yes, the PEX tube is freeze-damage resistant. The PEX pipe can expand to a certain extent when it is frozen, and shrink to its original shape when it is thawed. However, PEX pipes are not freeze-proof, and you should use standard insulation precautions to prevent freezing.

Their performance is exactly the same, and the color can be used to distinguish hot and cold water lines.

PEX means cross-linked polyethylene, is a form of polyethylene with cross-links. It is used predominantly in building services pipework systems, as well as hydronic radiant heating and cooling systems. PEX is an alternative to polyvinyl chloride (PVC), chlorinated polyvinyl chloride (CPVC) or copper tubing for using as residential water pipes.

Yes. Installing a floor heating system will increase the floor height, because the floor heating pipe needs to be installed on the floor heating board, and certain floor heating insulation measures should be taken.

If your floor heating system is not warming up, then you should check a few simple things.

-Check if the flow meter and return valve are turned on.

-Check whether the temperature control valve (if installed) is operating normally. If the actuator valve is turned on and the pump and boiler are working, please check the flow and return ball valves on the manifold (multi-zone manifold).

-Air may be trapped in the pipe and stay there, causing problems in the entire system. You can remove trapped air by venting the system.