Ignoring the installation environment
Mistake: Not considering the size of the space, ambient temperature, humidity, and the presence of corrosive gases at the installation site, and not reserving enough space for the operation, maintenance, and repair of the valve.
Consequences: Insufficient space will lead to difficulties in operation and maintenance. High temperature, high humidity, or corrosive environment may accelerate the corrosion and damage of the valve, affecting its service life and performance.
Not paying attention to the direction of the valve
Mistake: Not installing according to the flow direction marked on the valve, especially some valves with specific flow requirements, such as check valves, pressure reducing valves, etc.
Consequences: The wrong installation direction of the valve may cause the valve to fail to work properly. For example, if the check valve is installed upside down, the fluid will flow backwards, and if the pressure reducing valve is installed upside down, it may not be able to reduce pressure, and may even damage the valve and the entire system.
Improper pipe connection
Mistake: When the valve is connected to the pipeline, it is not aligned or forced to connect, causing the valve to bear additional stress; or the connection bolts are tightened unevenly, resulting in poor sealing.
Consequences: The valve may be deformed due to the extra stress, which will affect its sealing and normal switching. Uneven tightening of bolts will cause uneven force on the valve sealing surface, which is prone to leakage.
Not cleaning the pipeline
Mistake: Before installing the valve, the inside of the pipeline is not thoroughly cleaned, and there are impurities, welding slag, rust and other pollutants in the pipeline.
Consequences: These impurities may enter the valve, wear the valve sealing surface, valve core and other components, cause valve leakage or jamming, and affect the normal use of the valve.
No pressure test
Mistake: After the installation is completed, the valve is not pressure tested, or the test pressure does not meet the requirements.
Consequences: It is impossible to detect leakage and other problems that may occur during the installation of the valve in time, which may cause safety accidents after it is put into use, affecting the normal operation of the system.
Unreasonable installation position
Mistake: Install the valve in a position that is difficult to operate and observe, or in a place that is prone to mechanical collision.
Consequences: Inconvenient operation and maintenance will affect the normal use and maintenance of the valve. Valves that are prone to collision may be damaged by external force impact, affecting the safety of the system.
Ignoring valve supporting facilities
Mistake: Necessary valve supporting facilities, such as filters, pressure reducing valves, pressure gauges, etc., are not installed, or the specifications and models of supporting facilities do not match the valves.
Consequences: Lack of filters may cause impurities to enter the valve; improper selection of pressure reducing valves may not ensure that the valve works within the appropriate pressure range; without a pressure gauge, the system pressure situation cannot be understood in time, all of which will affect the normal operation and service life of the valve.
Valve is not firmly fixed
Mistake: The valve is not firmly fixed during installation, or the support is unreasonable, especially for some large-caliber and heavy valves.
Consequences: The valve may be displaced or shaken during operation due to vibration, fluid impact, etc., which will not only affect the sealing of the valve, but also may cause the pipeline connection to loosen, and even cause safety accidents.
Not considering thermal expansion and contraction
Mistake: When installing the valve, the thermal expansion and contraction of the pipeline is not considered, and no expansion space is reserved or a suitable compensation device is installed.
Consequences: When the pipeline expands and contracts due to temperature changes, it may cause greater stress on the valve, causing the valve to deform, leak, or even damage.