New Bolted Bonnet Valve from Emerson

Emerson has announced its Fisher GX Bolted Bonnet Globe Valve and actuator system, designed specifically for controlling the flow of critical process fluids in applications in the downstream oil and gas, chemical and petrochemical industries, being launched initially for the European market. The actuator can be serviced or replaced without exposing the valve internals or process media to the atmosphere, improving safety and reducing downtime.

Standard bonnets are designed so that the bolts securing the actuator yoke also hold the bonnet in place on top of the valve. Therefore, the actuator cannot be replaced or serviced without removing the bonnet and exposing the valve internals. Actuator repairs can be difficult in critical fluid applications as a result.

The Fisher GX bolted bonnet valve allows access to the actuator without removing the bonnet.
Source: Emerson

The Fisher GX Bolted Bonnet control valve addresses these difficulties associated with critical fluid applications by using a separate, high-strength locknut to secure the actuator’s yoke to the bonnet. This allows service technicians to easily remove and maintain the actuator while keeping the bonnet in place. 

The valve comes standard with a pneumatic actuator but is also compatible with electric actuators. It works with electric actuators from many different vendors, providing flexibility to meet electric actuation requirements. 

The Fisher GX Bolted Bonnet control valve extends the existing GX product line, continuing to provide simple sizing with its automatic actuator selection and easy configurability. Its compact size also allows for simplified installation in space-constrained areas.