Double flange joint force is pipe and valve fittings. Connect into used for conveying gas, liquid or solid particles flow device. Usually, the fluid by the blower, booster compressor, pump and boiler etc, from flow to the low pressure area to the pipeline of high pressure, can also use the fluid pressure or gravity conveyor. Double flange of dowel joint USES a wide range, mainly used in water supply, drainage, heat supply, gas supply, long distance oil and gas, agricultural irrigation, hydraulic engineering and various kinds of industrial equipment.
Dowel joint double flange connection on the valves and equipment in and out of control of the connection methods between the nature of the fluid, pressure and temperature and pipe factors such as material, size and installation site decision, basically have threaded connections. Flange connection, the socket connection and four methods such as welding.
Threaded connection is mainly suitable for small diameter pipeline. Connection, will make the threaded part tangle on fluorine plastic sealing strip, or coated with thick coat, wound linen, silk, such as sealing material, in order to prevent leakage. When pressure is more than 1.6 million MPa, it is generally in the pipe end face gasket seal. The connection method is simple, can remove the heavy, but must be installed in the proper place of the pipe union, in order to facilitate tear open outfit.
The applicability of double flange dowel joint pipe diameter is bigger. Connection is selected according to the nature of the fluid, pressure and temperature of different flange and sealing gaskets, use keep sealing gasket bolt clamping. At the section often need to tear open outfit and piping connected to equipment, mostly use flange connection.
Socket connection is mainly used for cast iron pipe, the connection between the concrete pipe, the clay pipe and fittings, only applicable to the work under the conditions of low pressure water supply, water drainage and gas pipes. Connection, at the groove of the socket to fill in the linen, silk, cotton, or asbestos rope, then materials such as lead or filled with asbestos cement, can also fill in the socket with the rubber sealing ring, make it has good flexibility, allow the pipe has a small move.
Single dowel joint flange connection strength and impermeability of the best, is suitable for various pipelines, province work, but must remove the cut the pipe and pipe fittings.
Double flanged dowel joint as connection pipe and other equipment new products. Its main features are: high voltage, corrosion resistance, buffering pressure for pipe damage. Double flange dowel joint displacement effect to a certain extent, in case of pressure can be transmitted by the axial thrust pressure to the pipeline; this pressure will be spread to disappear.
