• 【Type】: Non-Return Check Valve
• 【Name】: Single valve
  
• 【Size】 3mm 4mm 4.1mm 5mm 5.1mm 6mm 7mm 7.9mm 8mm 10mm 12mm
  
• 【Function】: Connect the hose to prevent gas or liquid backflow. Confirmation method: If you cannot identify it, you can try blowing with your mouth. If you blow out the gas, you can confirm entry and exit
  
• 【Model features】: pressureless and pressurized, ozone resistant and oil resistant functions.
  
• 【Characteristics】: Good thermal performance, strong chemical stability, non-toxic and odorless.

• 【Note】】: 1.The product dimensions are all measured by hand, and there are tolerances in the dimensions. 2. Due to different photographic products, the actual color may have color difference, which is subject to the actual object.

Packing Quantity】:

• According to your choice.