Measure the pressure above the reaction vessel; can a needle valve be installed between the pressure transmitter and the vessel?
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Measure the pressure above the reaction tank; can a needle valve be installed between the pressure transmitter and the tank? What are the connection specifications?
Not only should it be added, but it must be added. Without a valve, what happens if the meter malfunctions or gets damaged? How can it be shut off promptly for repair and replacement? It’s common sense. Common sense is like mathematical axioms – a principle that does not require proof. Who asked you to prove it? Spit in his face then. You pull him over and let your brother vomit for you; that works too. :Lol, don’t overreact; don’t worry about just a few seedlings – always refer to the guidelines. Rules are written by humans, not by gods. Norms may also be written by the dead, or written for the dead. .
The answer upstairs is perfect; there’s nothing to criticize! :lol
Specializing in the production of diaphragm pressure transmitters used in reaction kettles,
This depends on factors such as pressure and temperature; it is appropriate to use a needle valve in combination with a pressure gauge. Generally, needle valves are designed with threaded connections. For specifications, refer to HGT 20507-2014 Specification for Selection and Design of Automated Instruments
Would it be appropriate to switch to using a shut-off valve? Sometimes needle valves are not suitable.
Pin valve, ball valve – they’re all shut-off valves anyway... Buy valves of good quality, and that’s perfect. There are some poor-quality factories in Jiangsu that produce needle valves which cannot seal off air or liquids; they are notorious for leaking and failing to perform properly......
Pin valve, ball valve – they’re all shut-off valves anyway... Buy valves that meet quality standards, and you’ll be fine. There are some poor-quality factories in Jiangsu that produce needle valves which cannot seal off air or liquids; they are notorious for leaking and failing to perform properly...... :P
Bro Pig, can you recommend some good manufacturers of needle valves and air source ball valves?
I use it little, I haven’t paid attention to the manufacturer’s brand