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 current page pressure rating is clearly Class150, with a diameter of 1 inches - 36 inches. The materials include WCB, 304, and 316L.
How to understand Class150?
Class150 is an American standard pressure rating name, and the actual pressure and temperature ratings are related to the material and design temperature. This page will no longer be expanded to Class600 or other unlisted pressure levels.
The structure and sealing of the valve body need to be confirmed
The current page does not have sufficient basis to uniformly describe all calibers as fixed balls or floating balls, nor can PTFE, PEEK, metal seals, etc. all be considered as default valve seats, and should be confirmed according to the actual product configuration.
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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