Differences between metal flexible joints, rubber flexible joints, and metal hoses
Metal flexible joint
As a flexible pressure resistant pipe fitting, metal flexible joints are installed in liquid transportation systems to compensate for the mutual displacement of the connecting ends of pipes, machines, and equipment, absorb vibration energy, and can play a role in vibration reduction and noise reduction. They have many advantages, such as good flexibility, light weight, corrosion resistance, fatigue resistance, and high and low temperature resistance.
The connection methods of metal flexible joints and pipelines are divided into: flange connection, welding, screw connection, and quick joint connection. Small diameter metal flexible joints are generally connected using screw threads and quick joints, while larger diameters are generally connected using flange connection and welding. The connection methods of rubber flexible joints include screw connection, flange connection, clamp connection, etc. It has the advantages of reducing vibration, reducing noise, good scalability, and convenient use. High internal density, able to withstand high pressure, and good elastic deformation effect. Reduces vibration, reduces noise, has good scalability, and is convenient to use.
Rubber flexible joint
Rubber flexible joints have good vibration isolation and noise reduction effects. Installing a certain length of metal flexible joints at the inlet and outlet of equipment such as pumps and compressors can reduce vibration and noise and improve project quality and service life. However, rubber flexible joints do not have an advantage in temperature, while metal flexible joints can improve both temperature and pressure significantly. Metal flexible joints have high arbitrariness, large deflection, pressure resistance, and can be arbitrarily set in length.
The connection methods of rubber flexible joints include screw connection, flange connection, clamp connection, etc. It has the advantages of reducing vibration, reducing noise, good scalability, and convenient use. High internal density, able to withstand high pressure, and good elastic deformation effect. Reduces vibration, reduces noise, has good scalability, and is convenient to use. The rubber materials used vary depending on the media, including natural rubber, styrene-butadiene rubber, butyl rubber, nitrile rubber, EPDM rubber, neoprene rubber, silicone rubber, fluororubber, and so on. They have functions such as heat resistance, acid resistance, alkali resistance, corrosion resistance, wear resistance, and oil resistance.
Metal hose
The metal hose is a metal corrugated pipe, which has sealing properties. The metal mesh pipe is woven with metal wires. There are two types of corrugated pipes used for metal hoses, one is a spiral corrugated pipe; The other type is annular corrugated pipe.
Metal hoses are important connecting components in engineering technology, which are composed of corrugated flexible pipes, mesh sleeves, and connectors. In 1993, China issued the national standard General Technical Conditions for Corrugated Metal Hoses (GB/T14525-93). The metal hose is made of austenitic stainless steel or materials required by users, and has excellent flexibility, corrosion resistance, high temperature resistance (- 235 β -+450 β), and high pressure resistance (up to 32MPa). It can be connected in any direction in the pipeline to compensate for temperature and absorb vibration, reduce noise, change the direction of medium delivery, eliminate mechanical displacement between pipelines or between pipelines and equipment, etc, Double flange metal corrugated hose is particularly suitable for flexible joints of various pumps, valves, etc. with displacement and vibration.
Metal flexible joints and rubber flexible joints are both literally flexible joints, which most people think are very similar, but the fact is that the two functions differ greatly. First, it can be distinguished from the name that rubber flexible joints are rubber and metal flexible joints are metal. Metal flexible joints and rubber flexible joints are widely used in the connection of pumps and valves, fire-fighting equipment, pipelines with large vibration, and pipeline systems with frequent changes in heat and cold. Let's understand the difference between metal flexible joints and rubber flexible joints.
Different pipe working conditions require different soft connections to be selected. Pumps, compressors, and other equipment used in projects can generate vibration and noise during operation, endangering project quality and human health.
Rubber flexible joints have good vibration isolation and noise reduction effects. Installing a certain length of metal flexible joints at the inlet and outlet of equipment such as pumps and compressors can reduce vibration and noise and improve project quality and service life.
However, rubber flexible joints do not have an advantage in temperature, while metal flexible joints can improve both temperature and pressure significantly. Metal flexible joints have high arbitrariness, large deflection, pressure resistance, and can be arbitrarily set in length.
After reading this article about the differences between metal flexible joints, rubber flexible joints, and metal hoses, do you know which type of joint to use? Anyway, there are many advantages. Choose according to your actual situation. Pinji is specialized in manufacturing metal flexible joints. If you have any needs or problems with cable waterproof joints, please contact us.