Stainless steel pipe union
Stainless steel pipe union is composed of three parts, namely octagonal nut and two special threaded joints. The threaded joint functions to connect the two ends of the pipe. The middle octagonal nut acts like a pipe clamp to two The tubes at the ends are connected, so that the two tubes can be separated without moving the tube, which makes it easier to access the tube, which is the origin of its name.
In fact, its shape is a kind of positive and negative reversal. When installing, a single piece with a sub-port is placed on the end of the meson inflow, and then a single piece with a female port is placed in the meson flow. Go to the other end. Add the pad in the middle and tighten the lock nut. If it is in the right direction, it can prevent the impact of the meson. If it is reversed, it will increase the probability of leakage when the meson flow rate is unstable.
The function of the union is that it is easy to install and disassemble the pipe, and there are two kinds of unions, a threaded connection and a socket-welded connection. It can be used in pipes of different calibers, as well as in water meters and valves. And because the socket structure is used, the cost is reduced, and the installation, use, and maintenance are very convenient, and the leakage prevention capability is still very high. Therefore, the market prospects are also very high.
Stainless steel pipe union product specifications:
Executive standard: ASME B16.11 MSS SP-75 JIS 2316 SH3410 HG/T21634, etc.
Features: Stainless steel round thread joint has the characteristics of convenient operation connection, firm connection, high pressure resistance, good sealing and repeatability, convenient installation and maintenance, safe and reliable work.
Working principle: The steel pipe is directly cut into the pipe and sealed. When the union is used, the joint is free to control the movement, which avoids the disadvantage that the long pipe that is butted is not movable. It does not need to be welded when it is connected with steel pipes, which is good for fireproofing, explosion-proof and high-altitude operations, and can eliminate the disadvantages caused by inadvertent welding.
Wide range of uses: refining, chemicals, oil, natural gas, food, pharmaceuticals, instrumentation, etc.
Stainless steel pipe union technical requirements:
1. The taper pipe thread of the union shall be machined in accordance with the requirements of the 25-57 conical pipe thread standard. The thread of the union joint nut and the corresponding outer joint shall be processed in accordance with the provisions of GB 193-63 rough square thread standard. The accuracy is 3 levels.
2. The surface of the taper pipe thread and the rough square thread should be smooth and free of cracks.
3. The inner joint, outer joint and connecting screw of the union are made of 20 gauge steel or 25 gauge steel. Gaskets are generally made of oil-resistant rubber asbestos sheets. If there are special requirements, they should be requested when ordering.
Stainless steel pipe union usage
1. It cannot be used in a temperature environment outside its operating temperature range, otherwise it will cause the sealing material to wear and leak.
2. You can't just disassemble it.
3. Avoid artificial knocking, stretching and bending to prevent damage.
4. Cannot be installed in a hose with cracks as this will cause leakage and fall off.
5. The medium in the pipe must be a filtered clean fluid that must be stressed only as a fluid.
6. Can not be used in dusty environments, such as metal powder and sand dust, otherwise it will lead to poor work or leakage.
7. Try not to install the stainless steel union in a vibrating or impact environment, which will result in reduced durability of the stainless steel union.
8. The installation of threaded stainless steel unions shall not exceed the maximum tightening torque, otherwise the stainless steel union will be damaged.
9. Can not be used under pressure conditions outside the pressure range.
