1. The manual operation direction is coaxial with the axis, which facilitates accurate and reliable positioning;2. The sliding column structure has good sealing performance, small size, heavy weight and light weight, and is easy to assemble and disassemble: 3. The inner hole probe is processed with special technology and has low friction resistance and long service life: . 4. No need for lubrication: 5. Multi-position installation, easy to install and use;Category: Hand Valve, Brand: Yadeke, Series: 3L