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Electric and Pneumatic
- Safer Bonnet / Valve Body Connection-- The unique design provides additional protection if disassembly of bonnet/valve body connection is inadvertently started while there is still pressure in the valve body. Pins mounted in the valve bonnet help ensure the bonnet disengages from the valve body as the hammer nut is loosened, while the threads are still engaged. This allows internal pressure to be vented, while keeping the actuator retained to the valve body.
- Field-Selectable Flow Rates--The FloPro feature allows adjustment of the flow capacity without changing the trim. In this way, a single trim set can be used for more than one flow requirement, reducing inventory and maintenance costs. See figure 1.
Electric and Pneumatic
- Two End Connection Styles-- The D3 control valve is available in both CL900 screwed-end and CL600 RF flanged construction.
- Two Modes of Actuation-- Pneumatic or electric actuation is available.
- Live-loaded Packing System--The packing system provides an improved stem seal to help prevent the loss of valuable or hazardous process fluids or gases. It features ENVIRO-SEALt packing technology to provide reduced packing maintenance and excellent emissions control.
- Rugged Trim Design--The pinned and guided plug/stem assembly is field-proven and easy to maintain.
- Severe Service Capability with Tungsten Carbide Trim--D3 valves are available with tungsten carbide trim for erosive service. Fisher tungsten carbide trim is designed specifically for severe service applications in the oil and gas industry. Durable tungsten carbide trim may benefit your application by wearing better and lasting longer.
- Easy Maintenance--The hammer nut bonnet/body joint allows repair or maintenance with a minimum of tools, without removing the valve body from the piping system. The seat ring can be removed with a standard hex socket.
- Integral Bonnet Flange-- The bonnet has an integral flange, retained by a hammer nut, making the bonnet-to-body connection. This eliminates use of snap rings, which can be subject to possible failure in sour service or in atmospheric corrosion.
- Application Flexibility--A selection of end connections, trim materials, and flow capacities allows the D3 to be used ina broad range of applications, including sour service.
- NACE MR0175/ISO 15156 Service-Ready--The standard D3 FloPro trim, valve body, and bonnet meet the metallurgical requirements of NACE MR0175/ISO 15156.
Electric
- Low Power Consumption-- The Fisher easy-Drive electric actuator operates with 12 or 24VDC and less than 0.1 watt hours per operation, using Modbus, 4-20 mA, 1-5VDC, or dry contact control signals.
- Low Temperature-- The easy-Drive electric actuator design allow use in ambient temperatures as low as -20°C (-4°F) without use of a heater.
- Easy Installation--The compact design allows installation where space is a premium. Fisher easy-Drive calibrates by simply opening and closing the valve.
- Remote Monitoring and Configuration-- Loss of signal position is programmable over Modbus.
Pneumatic
- Low Temperature Materials--Valve construction materials allow use in applications as low as -34°C (-30°F) for the pneumatic actuator.
- Field-Reversible Actuator--The D3 pneumatic actuator can be field-converted from spring-to-close to spring-to-open action.
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