Purpose of control valve:

1Determine the valve model based on the working temperature (℃) and applicable fluid. Purpose of control valve:

2Determine the valve diameter based on the fluid value.

3According to the pressure difference before and after the valve（∆P）To determine the model of the actuator.

Specific parameters:

type number: ZW(Q/X)-16C

form Formula: Three way (merging, diverging)

Operation mode: air open, air closed

Fault location: closed, open

Working temperature:-10~400℃

Tolerance pressure:PN16、PN25

Control method: Positioner control

Valve cover form: standard type

Connection method: flange connection

Flange standard:HG20592-97

Shaft seal form: bellows seal+packing seal

Temperature resistance of actuator:0~70℃

opening Diameter:25~200mm

Applicable fluids: hot oil, steam, hot water, water, gas

Body material: cast steel, stainless steel

Airtight and Airtight:

Airtight type (as shown in the figure below): The compressed air inlet is at the upper end, and the valve opens during ventilation, as shown in the figureAgiveABSmooth, when not ventilated normally,AgiveABThe pathway is closed, so it is also known as constant closure.

Pneumatic opening (as shown in the figure below): The compressed air inlet is at the lower end, and the valve is closed during ventilation, as shown in the figureAgiveABClose, when not ventilated normally,AgiveABThe pathway is unobstructed, so it is also known as normally open.