Do you know what is the health level of pneumatic valve

Health level pneumatic valve:
type pneumatic health valve adopts the standard electronic polishing, to ensure smooth surface is clean, no medium stockpile area, won't produce potential pollution. Health level of pneumatic valve is used in pharmaceutical, food industries, in the level of health requires high places used by the valve pipe fittings. Main body material using even the highest L stainless steel as the main body material.
the health level of pneumatic valve can be remotely operated by a pneumatic head, also can pass a handle for manual operation. Actuator has three kinds of standard models, namely normally closed ( NC) Type, normally open ( NO) Type and air/air ( A/A) Type. Actuator converts a axial movement of the piston to valve shaft ° rotation movement. When the valve is in the body of the circular piece comes into contact with the valve sealing ring, the actuator torque increase, close the valve to select different manual operation with the handle of the valve can be mechanical locking in the open, closed, or other position in the middle. Implementation of traffic regulation.