Do pneumatic valves need grounding protection?
Thread Content
Everyone, please open it. Should the outer surface of the pneumatic valve be grounded? What is the basis for this? Thank you!
Professional valve manufacturer 18557702702
Has my elder brother encountered the same problem? My supervisor here has requested that grounding be done (for 24V DC solenoid valves), on the grounds that it is required by expert inspections. If specific requirements are necessary, refer to clauses 4.1.4 and 4.1.5 of SH/T3081-2019
In explosion-proof areas, wherever there were grounding screws, they were all connected
The body of the pneumatic control valve does not need to be grounded, but the electrically charged components of the pneumatic control valve must be grounded, such as solenoid valves and electrical valve positioners.
It should be grounded, because the feedback signal has a power supply. If there is no feedback, for valves and pipes that require high explosion-proof standards in special applications, it is necessary to add jumper wires
The Standard for the Grounding Design of Petrochemical Instruments SHT3081-2019 – section 4.1 on protective grounding can be understood after reading it a few times
At present, explosion-proof areas generally need to be connected, and it also depends on the expertise of local experts
It is not necessary. According to the 3081-2003 instrument grounding specifications, section 2.1.2 states that field instruments powered with a voltage of less than 36V do not require protective grounding, except in cases where they may come into contact with equipment operating at voltages higher than 36V.