A union is a type of threaded pipe fitting. Fittings are commonly used to create tight, solid, and at the same time easily detachable pipe connections in hydraulic installations - water, gas, central heating, compressed air and others. There are various types of screw fittings available on the market. Get to know the most common applications of these unique hydraulic connectors and find out which fitting to choose for your gas installation.
Check out the screw fittings at the Onninen wholesaler
Which screw connection for the gas installation will be suitable?
The union is an extremely useful element in gas installations. In the event of a fault, e.g. loss of tightness of a corroded pipe, the screw connection will avoid dismantling the long string of gas supply lines. It will also significantly facilitate the installation of an additional element in the system, e.g. a counter.
For gas installations, you should choose elements of the absolute highest quality, guaranteeing full 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 lifespan of a given fitting is declared by the manufacturer. The optimal choice for a gas installation will be a brass or steel fitting. It must be sized to the pipe diameter.
Application of screw connections
Pipes can be easily connected and disconnected at the point of use. Therefore, it is 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 unions whose structures include seals. 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 fittings are mainly used in critical and hard-to-reach places.
Unions are also useful when replacing parts of the pipeline, e.g. when a piece of pipe was corroded and there was no option to unscrew it, but it had to be cut, or the pipe was damaged during renovation. The installer can easily incorporate a new section of pipe into the existing system. He does not have to dismantle a large section of the pipeline.
Another very common use of screw fittings is the assembly of hydraulic devices that require cyclical inspections, maintenance, replacement or disassembly (for legal verification purposes). The speech includes: about meters, pumps and ordinary and thermostatic valves. Many of these devices have factory-built special screw connections that enable efficient and quick servicing without the need to drain the working medium from the installation.
It is worth knowing that the screw fittings available on the market differ depending on the material they are made of. A brass fitting is often installed in water transfer installations. It is not threatened by water or high temperature. However, it is not the cheapest connector, so it is used in the most critical places in systems.
Screw connections at the Onninen wholesaler
At the Onninen hydraulic wholesaler , we offer straight and angular fittings made of brass, stainless steel, cast iron and various types of plastics. All fittings have been carefully selected to ensure ease of installation, wide compatibility and maximum resistance and tightness of connections. We have products from the most valued brands in the hydraulic industry, such as Onnline , KAN-therm , Opal , Pneumat and Vesbo . Our product range includes screw fittings with various thread sizes, including:
Still don't know which fitting to choose for your gas, radiator or water meter? Do you need additional information about the hydraulic connectors offered? Contact us! Onninen experts will try to answer every question about fittings and help you find a perfectly matched product to the installation you are creating.