For home decoration waterway renovation, everyone will find that a lot of water pipes and corresponding water pipe accessories are used. If we also renovate the waterway in our home, we need to calculate the water pipes and related accessories in advance. But there are actually many aspects to water pipes and fittings, so it is necessary to have a good understanding of these contents. Taking the following question as an example, Home Furnishing Miscellaneous Store will answer the question of home decoration water pipe accessories for everyone.

What are the accessories for water pipes?

Regarding the accessories for water pipes, the main question here is about the water pipes used in our home decoration waterway renovation process and the required connecting accessories. Because most of the water pipes used in households at present are PPR pipes, the following household miscellaneous items will also take PPR pipes as an example to answer the question of water pipe accessories. I personally divide water pipe fittings into two categories: the first category is fittings for connecting pipes, and the second category is fittings for connecting indoor water facilities. The specific situations included are as follows.

（1） What are the accessories for connecting home water pipes?

The renovation of water in our household involves first connecting the water pipes from their original usage points, and then arranging them at various usage points. During this process, it is necessary to use corresponding accessories to connect our pipelines. Because PPR pipes are usually 3m or 4m in length and require extension or cutting, we need the following water pipe fittings to complete the connection of the pipes.

① : Directly. The so-called direct refers to the fittings connected to the pipeline itself. For direct pipelines, there are two types: same diameter direct and variable diameter direct. For example, if we have a DN20 water pipe, and it is still connected to a DN20 water pipe, then we will use DN20 pipes of the same diameter directly. If the water pipe we are connecting at this time is DN15, then we need to use DN20 × DN15 variable diameter directly.

② Bend. For the elbows used in water pipe connections, there are commonly 90 degree elbows and 45 degree elbows. If elbows are divided according to their inner diameter changes, there are also same diameter elbows and variable diameter elbows. That is to say, if we connect a DN20 water pipe and only make a 90 degree turn, then we will use a 90 degree same diameter elbow at this time. If the water pipe needs to be tapered at this time, then choose a tapered elbow.

③ Three connections. The utilization rate of three-way connections is very high in the renovation of home waterway. For example, when we are arranging water pipes in the bathroom, we need to connect multiple branch points from the main pipeline, so we use tees to connect them. The installation of the three-way valve adopts hot melt connection, with both ends directly connected to the pipeline by hot melt. Connect the other head to another branch pipe and reserve it in the corresponding position.

④ : Valve. There are two common types of valves used on PPR pipelines: ball valves and globe valves. But regardless of the type of valve, both ends are made of PPR material. We use hot melt connections and pipes for installation together. Valves are usually installed on the main pipelines of each room to control the water supply and facilitate our future maintenance.

Attention: ① The specifications and models of the pipeline connections we choose should match the pipelines we use. That is to say, choose the same specifications and models. ② We try to choose any pipe fittings that are of the same brand as the pipe material. Due to slight differences between different brands, the heat solubility may sometimes decrease. ③ Before connecting the water pipes, it is necessary to confirm the specific layout direction and pipe diameter selection in advance, so as to match the appropriate fittings.

（2） What are the accessories for connecting home water pipes and water facilities?

The purpose of our home waterway renovation is to connect with various indoor water facilities. For example, in the bathroom, we need to reserve an inner wire bend at the position of the washbasin, and also reserve an inner wire bend at the position of the mixing valve of the water heater, in order to meet the connection of our water facilities. So when renovating waterways in home decoration, the pipe fittings connected to water facilities should include the following three types.

① The inner thread is direct. The so-called direct inner thread refers to a type of pipe fitting that connects pipes, but one end of the fitting is hot-melt and the other end is threaded with inner thread. Its function is to connect with joints with external wires. This type of water pipe fittings is generally used for installation on walls.

② Inner wire bend. It can be said that the use rate of internal wire elbows is relatively high in home decoration. Many connection positions are reserved on the wall, and internal wire elbows are basically used. One side of the inner wire elbow is a hot melt connection, and the other side is a connection with inner wire. During installation, one end is directly hot-melt connected to the pipeline, while the other end is connected to our angle valve and other components.

③ Three connections. The three-way valve is also used at a certain location to connect to the water supply point. For example, if we need to connect two water points at a certain location, we usually use an internal wire tee to directly complete this task.

Suggestion for selection: ① When installing the reserved inner wire on the wall, we must reserve the specific height of the inner wire according to the thickness of the decorative layer on the wall. The requirement is that after tiling is completed, it should be at the same height as our wall tiles. ② We also need to be careful not to apply too much force during installation. After winding the raw material tape normally, we can tighten it by hand and then use a wrench to tighten it one or two turns. ③ Any water supply fittings we reserve on the wall must accurately confirm their height in order to facilitate our future installation.