1. Instrument valves are easy to install and disassemble, tightly connected, conducive to fire prevention, explosion-proof and high pressure resistance, good sealing performance.

2. The instrument valve has good sealing property and long service life. Even if the seal surface is damaged, it can continue to use only by replacing the vulnerable parts.

3. Needle valve is a kind of valve which can be adjusted accurately and widely used. It is an important part of instrument measuring pipeline system. It mainly has globe valve and ball valve. Its function is to open or cut off pipeline passage.