The utility model relates to a hand-operated forced air-tighttypeair tap of gas-filled products, comprising an air tap seat with an air-in via hole arranged at the middle.
一种充气产品的手动强制气密式气嘴,包括其中部设有进气通孔的气 嘴座;
2
The unit casing shall be airtight at low and high pressure, units to be installed open to weather shall be weather proof type.