The air valves for blood pressure monitor on current market are mostly made from metal, and its air flux and inflating time are controlled by hand, which will be difficult for adjustment and bring about time wasting. What’s more, the metal material is not adurable (it will become loosen and diform after a certain period, causing quality problem and troubles of repair maintenance) Our air valves are different and advanced. All the production and testing are done by automatic machines. And the products boast strong points of unique inserting systems, with stable ourgassing rate, competitive price and a long life. Moreover, each valve is qualified by repeating testing, suitable for different type of monitor devices. Pressure data: Air pump inflation <300mmHg/550cco> blow off all air in 10s Ourgassing rate / deflating rate: 3-5mmHg/sec