Songjiang Group to solve the installation of metal hoses for you, this product is a common product in the pipeline field, and the role of rubber soft joints play a role in reducing vibration and noise. The product bears higher pressure than the rubber soft joint, but the shock absorption effect is slightly worse than the rubber soft joint, because the main part of the rubber soft joint is made of rubber, and all the metal hoses are made of metal parts.
Key factors for installation
Note: In order to obtain good performance and prolong the service life of expansion joints, the following suggestions must be considered.
Fixed Point: The force produced by the internal pressure of the metal hose acts on the piston. In order to prevent the pipeline from being damaged, the pipeline must be fixed to deal with these reaction forces (FR).
The formulas for calculating the reactions of metal hoses are as follows:
Fr = Q x P x 0.01
Fr = reaction force in kN.
Q = effective cross sectional area in cm2.
P = actual pressure in bar or kp/cm2
Before installation, it should be used strictly within the allowable range of temperature, pressure and displacement. Metal hoses should be easily inspected regularly. I recommend that metal hoses be compressed rather than stretched, let alone twisted. Maintenance Notes: Every month, we should observe whether the metal hose is overstretched and elongated, and keep the metal hose in normal length. In order to ensure the expansion capacity, assembly bolts should ensure that the threaded bolts are as few as possible (no more than 2 mm or 3 mm), so as to avoid damaging the metal hose body.
Preventive measures: When welding occurs, the metal hose body must prevent welding heating and sparks. Please install an effective chloride removal device (chloride content is not more than 25 mg/l) at the intake of the pipeline to avoid excessive chloride content in water and pinhole corrosion.