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Email format error
Email cannot be empty
Email does not exist
6-20 characters(letters plus numbers only)
The password is inconsistent
Swing check valve, also called swing check valve, is a manually operated two-way flow control valve. The operation of the valve body can be reversed at any time. An important feature of this type of product is that it does not form an air tight seal or free passage until the position rod is rotated by 90 degrees to change its position from "closed" to "open".