A screw joint is a type of threaded pipe fitting. Screw joints are commonly used to create tight and solid, yet easily detachable pipe connections in hydraulic installations - water, gas, central heating, compressed air and others. There are various types of screw joints on the market. Learn about the most common applications of these unique hydraulic connections and find out which screw joint to choose for a gas installation.
Check the screws at the Onninen wholesaler
Which gas fitting is suitable?
A screw joint is an extremely useful element in gas installations. In the event of a failure, e.g. loss of tightness of a corroded pipe, the screw joint will allow you to avoid dismantling a long series of gas supply pipes. It will also significantly facilitate the installation of an additional element in the system, e.g. a meter.
For gas installations, you should choose elements of the absolute highest quality, guaranteeing complete tightness of connections, increased mechanical strength and resistance to various types of external factors. Safety should be an absolute priority! It is worth checking or asking the seller what the manufacturer's declared service life of a given fitting is. The optimal choice for a gas installation will be a brass or steel screw connection. It must be matched in size to the diameter of the pipes.
Application of screw connections
At the point of use, the screw connection can be easily connected and disconnected. It is therefore used wherever trouble-free and quick assembly and disassembly of installation elements is necessary. The screw connection ensures, for example, the connection of radiators in heating systems. This is one of the typical applications of this fitting.
The work is even more efficient in the case of self-sealing screw connections, the construction of which includes gaskets. The connection is perfectly tight and highly reliable without the need to use tapes or sealing pastes. It is also characterized by an aesthetic appearance. Self-sealing screw connections are mainly used in critical and hard-to-reach places.
Screw connections are also useful when replacing parts of the pipeline, e.g. when a piece of pipe has corroded and there was no option to unscrew it, but to cut it, or the pipe has been damaged during renovation. The installer can easily connect a new piece of pipe to the existing system. He does not have to dismantle a large section of the pipeline.
Another very common use of screw connections is the assembly of hydraulic devices that require cyclical inspections, maintenance, replacement or disassembly (for legal legalization purposes). These include meters, pumps, and standard and thermostatic valves. Many of these devices have special screw connections built into the factory, which allow for efficient and quick servicing without the need to drain the working medium from the installation.
It is worth knowing that the screw connections available on the market differ in terms of the material they are made of. In installations used for water transfer, a brass screw connection is often installed. It is not threatened by water or high temperatures. However, it is not one of the cheapest connections, which is why it is used in the most critical places in systems.
Screws in the Onninen wholesaler
In the Onninen plumbing wholesaler we offer straight and angle screw connections made of brass, stainless steel, cast iron and various types of plastics. All fittings have been carefully selected to ensure ease of assembly, wide compatibility and maximum resistance and tightness of connections. We have products from the most valued brands in the plumbing industry, such as Onnline , KAN-therm , Opal , Pneumat or Vesbo . Our assortment includes screw connections with various thread sizes, including:
Still don't know which screw fitting to choose for gas, radiator or water meter? Do you need additional information about the hydraulic connections offered? Contact us! Onninen experts will try to answer every question about fittings and help you find the ideal product for the installation being created.