Valve selection
Pneumatic American standard ball valve ASME Class 150LB
Q641F-150LB-P Pneumatic American Standard Flange Ball Valve
This product adopts a pneumatic actuator and an American standard flange ball valve structure. The pressure class is Class150, with a diameter of 1 inches - 36 inches. The materials include WCB, 304, and 316L.
How to understand Class150?
Class150 is a pressure-class designation. Its pressure–temperature rating depends on the material and design temperature.
The structure and sealing of the valve body need to be confirmed
Floating or trunnion-mounted construction and seat materials should be selected for the required differential pressure, sealing duty and service conditions.
Pneumatic control accessories
Single acting or double acting actuators, solenoid valves, limit feedback or locators can be configured according to project requirements. 220V and 24V are possible electrical accessory power supply conditions, not the driving power supply of the pneumatic actuator itself.
For more American standard and pneumatic products, please refer toSelection of Pneumatic Ball Valve。
Frequently Asked Questions
Is the pneumatic actuator driven by 220V?
No, the pneumatic actuator is driven by compressed air; Voltage usually involves solenoid valves, positioners, or feedback accessories.
Is Class150 the same as 150PSI?
No, the specific rated pressure needs to be confirmed according to the corresponding standards based on the material and temperature.
Does Q641F-150LB-P support 4–20mA by default?
Not default, only when configuring the corresponding locator does it have the corresponding proportional control signal function.

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