Manual pneumatic dual-purpose flange ball valve with dual drive

Q3941F manual and pneumatic dual-purpose flange ball valve

The product identity on the Q3941F page is a dual-purpose flange ball valve that can be manually and pneumatically operated. It is automatically opened and closed through a pneumatic actuator and retains the corresponding on-site manual operating mechanism. The current caliber is DN25-DN800, and the materials include WCB, 304, and 316L.

How to switch between manual and pneumatic?

The specific manual mechanism, clutch or switching method should be operated according to the instructions of the actual executing mechanism, and cannot be uniformly considered as using a single lever or fixed number of turns structure based on a universal template. Before performing manual operations, ensure that the actuator is in an allowed safe state.

How to choose between single acting and double acting?

The double acting actuator relies on a gas source to complete actions in two directions; The single acting structure can achieve gas loss reset according to system safety requirements. Actual selection also requires confirmation of valve torque, gas source pressure, and safe position for gas loss.

Is a regular ball valve suitable for continuous adjustment?

Just because it has pneumatic drive, it cannot be assumed to be suitable for continuous throttling. If the project requires adjustment, the configuration of the ball core flow channel, valve seat, pressure difference, and positioning control should be confirmed.

More pneumatic ball valves are availableSelection of Pneumatic Ball Valve。

Frequently Asked Questions

Can manual mechanisms be operated directly during pneumatic operation?

It should not be operated by oneself, but should be executed according to the manual switching and safety instructions of the actual executing mechanism.

Does a dual drive ball valve necessarily come with a single acting spring reset?

Not necessarily, single acting or double acting should be confirmed according to the actual configuration.

Does Q3941F have a proportional adjustment function by default?

Not default, the adjustment function requires the valve structure and corresponding positioning control configuration to be met together.