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The standard life of the product is about 8 years, but it actually depends on the presence or absence of maintenance. In general, as a trouble of the pressure reducing valve, the secondary pressure rise due to dust biting and the malfunction of the drive part due to the scale are often seen.
It depends on the usage conditions and frequency, so it cannot be said unconditionally, but please perform an overhaul every 2 to 4 years to clean the parts and replace the consumable parts. In addition, the inflow of rust into the pressure reducing valve causes troubles and shortens the service life, so it is necessary to take measures against the mixing of drainage.