The open ends of the pipes to be sealed. There are various options for plugs used as a gate. They are indispensable for carrying out repairs, transportation profile, finishing decoration design. Set the type of valves can be independently or using ready-made parts from scrap materials.
What are the locking elements
Installing the plug on the end of the pipe is made in the following cases:
- When wiring plumbing, gas pipelines, sewerage systems, with a view to prevent any foreign objects inside, including waste;
- During the repair work in a particular sector. Constipation is set so that the entire system is functioning;
- If necessary conservation orphan network section, which at this stage of the construction will not be used, but is required for the further wiring of the pipeline;
- When carrying out demolition work. With closing parts divide the network into individual threads that run in parallel. Therefore, one part of the pipe disassembly does not disable water or gas throughout the system;
- At elimination of accidents, emergency stop leakage of filler pipes ..
Note! With plugs make out any section of the pipe, which can not be hidden under the decoration of walls, indoor furniture, building structures. In this case, they play more and a decorative role.
Valves for metal pipes also acts as a protection against moisture, corrosive processes of development.
Overview of closing elements for pipes
Classified according to the following criteria:
- Features caps designs. Allocate threaded, pneumatic, elliptical, end, flange;
- Material type. Made of metal (steel, brass, including chrome), the polymer (polyethylene plastic), rubber, as well as improvised - wood, glass, metal plates, mounting foam.
threaded fittings
In systems with a screw threaded connection is used. From made mostly of metal and plastic but there are options. May have inner and outer cuts.
They are easy to install yourself at the coincidence of the type of thread to the pipe. It is necessary to pay attention to the sealing of the junction. Usually this preroll of linen rope or tape FUM.
Important! Threaded caps have a limit to the diameter of the pipe. Their diameter does not exceed 2 inches.
You can make a threaded plug with their hands from a piece of metal or metal-plastic profiles, if using the die, the die stock, lathe cut into the desired type of thread.
Pneumoelements
Rubber pneumatic plugs are used to remove pipeline accidents. They increase in volume when pumping into the air. Rubber under the action of the air jet extends up until completely block the opening. It is an effective way to eliminate accidental leakage of liquid and gas from the pipeline.
Locking flange parts
Stop flange - metal (steel) or rubber plate having a plurality of apertures for fastening to the tube flange. As the mounting bolts protrude rivets or specialized. The flanges and plug thereto are mounted on the pipe, which is greater than 2 inches diameter.
Seal between the fitting is achieved using shims of different kinds, which are selected depending on the pressure and temperature in the pipeline.
Tip! Stop flange to a central system for supplying cold water is sealed with a rubber gasket and hot - of refractory materials, e.g., from paronita.
This type of shut-off valves are not only easy to install but also dismantled.
elliptic elements
Made from sheet steel elliptical plugs welded to the tube. They become permanent member. They are used in pipelines for industrial use.
end pieces
A simple way to protect against clogging, corrosion, finishing wiring pipes - installation of the end plug. Is chosen according to the type of pipe material. Traditionally a type of cap which prischolkivaetsya to the outlet pipe. Also produced internal options. These types of plugs in the apartments, private homes are usually made independently.
What influences the choice of
four factors that determine the choice of the type of constipation can be identified:
- As used pipes. The gas supply pipes are mounted elliptical fittings as the most reliable. The pipes used for delivery of the working mixture of heat and pressure applied from a metal stub. The cold water pipe can use any locking elements.
- Assignment locking caps. Elliptical, plugs are used for strong and long-term blockage of pipes. Compressed air used in emergency situations. Flanged, threaded needed where the opening and closing of the highway is expected.
- tube material. Fitting caps Regulations require that the metal to metal tubes installed in accordance with the type of metal, plastic - to plastic. Exceptions are pnevmofitingi, which are considered a temporary member. If the plug plays a decorative role, if it is selected in accordance with the overall design concept.
- The geometry of the pipe. The basic rule: the round for round, square for profile. Per square cut rebar can not strengthen the threaded plug. Breeds that do not carry the operational load, can not comply with this rule.
Important! To the locking member fully perform its function, the diameter of the plug, its geometrical dimensions must match exactly with the same size tube.
Plugs from scrap materials
You can set yourself factory constipation or make them available materials:
- "Antiquated" option - cork wood. From the bar milled fungus, which leg has a smaller diameter than the cap. The diameter of the legs corresponds to the diameter of the pipe. Hammer (for plastic pipes rubber beater) are driven into the leg all the way into the hat. Change the cork from a tree in the water difficult, as the wood swells inside.
- For temporary sealing can be used a plastic bottle or tube to it. Mounted on a blowtorch.
- The pipes that should be preserved in the idle state for some time, you can zapenit with foam. To the foam collapsed inside the pipe, the hole hammer paper. Then the paper tube covered with foam, so that was completely covered with cut edges. In the final stage of installation excess is removed and the foam is covered with a protective mastic.
- The sheets are made of metal caps for screws or welds that look like factory. To do this, cut out elements of the parameters in the holes with a reserve fixture. Welding provides reliable and durable sealing option.
- On the fence poles that are inside are filled with sand, poured concrete plugs. They have a considerable weight and can crush a support.
How to remove or replace the plug
Replacement caps performed in a manner consistent with its type. The order of execution of works:
- Disable supply conduit from the gas-liquid carrier;
- Choose the tools for installing and removing plugs of this type. Prepare the replacement of most of the locking valves;
- If the fitting is threaded, it is unscrewed, cleaned the thread and wind the new element. Elliptical cap is cut off grinder. To get the pneumatic plug, open the valve on it and release the air. With flange protection unscrewed.
Plugs are fitting parts used in various stages of construction, the repair of roads, and just as a decoration. Used as factory options and caps made with your own hands.
