FLOWSERVE MARK ONE Linear Globe Angle Control Valve

Product Overview

The Flowserve Mark One Linear Globe Angle Control Valve is a versatile and high-performance control valve designed for precise regulation of flow, pressure, temperature, and level in industrial process systems.
Built with a robust body and flexible trim options, the Mark One valve delivers dependable performance in a wide range of services including liquids, gases, and steam.

The Mark One series features both linear globe and angle body configurations, offering superior throttling characteristics, excellent control stability, and reliable shut-off performance. Paired with pneumatic or electric actuators and digital valve positioners, it becomes a complete solution for automated process control.

Flowserve Mark One valves are commonly used in chemical plants, oil and gas processing, power generation, water treatment, and general industrial automation applications.

Key Features

Linear globe and angle valve bodies suitable for diverse process conditions
Precise throttling control and high rangeability
Multiple body materials and trim options for tailored service
Robust construction for long service life and reduced maintenance
Compatible with pneumatic diaphragm and piston actuators
Supports digital and electropneumatic valve positioners for enhanced control
Reliable tight shut-off performance
Wide range of sizes and pressure classes available
Designed for both new installations and retrofit upgrades
Easy access to internals for maintenance

Technical Specifications

Valve Type
Linear globe control valve
Angle control valve

Body Materials
Carbon steel
Stainless steel
Alloy steel options

Trim Materials
Stainless steel
Hardened alloys for severe service

End Connections
Flanged
Welded

Pressure Class
ANSI Class 150, 300, 600, 900, 1500 and higher (model dependent)

Flow Characteristics
Linear
Equal percentage

Valve Sizes
Standard industrial range of nominal diameters

Actuator Compatibility
Pneumatic diaphragm actuators
Pneumatic piston actuators
Electric actuators

Positioner Compatibility
Digital valve positioners
Electropneumatic positioners

Temperature Range
Suitable for standard and high-temperature industrial processes

Applications

Flow control in chemical and petrochemical processing
Steam regulation in power generation and utility systems
Pressure and temperature control in oil and gas plants
Water and wastewater treatment distribution
Process automation in pharmaceutical and food processing industries
General industrial process control systems

Benefits

Delivers stable and accurate process regulation
Improves overall system efficiency and product quality
Reduces process variability and improves safety
Supports integration with smart automation systems
Durable design minimizes operational downtime
Flexible configurations address a wide range of industrial applications

How It Works

The Mark One control valve uses a plug and seat mechanism to regulate process fluid flow.
As the actuator receives a control signal, it moves the valve stem, positioning the plug relative to the seat.
This movement changes the flow path and controls the variable of interest such as flow rate, pressure, or temperature.
When equipped with a digital valve positioner, the valve achieves precise positioning and rapid response to changes in control signals.

Installation Overview

Install the valve in the correct flow direction per body marking
Secure actuator and positioner using the appropriate mounting kit
Connect control signal wiring or pneumatic tubing
Verify air supply and control loop connections
Perform calibration and stroke testing
Test valve operation under normal conditions

Frequently Asked Questions

What media can the Mark One valve handle
The Mark One valve can handle liquids, gases, and steam depending on selected materials and trim.

What configurations are available
It offers both linear globe and angle body styles with various body materials and trim options.

Can it be automated
Yes. It is compatible with both digital and electropneumatic valve positioners and actuators.

Is it suitable for high temperature
Yes. With proper material selection and insulation, it performs reliably in elevated temperature environments.

How often does it require maintenance
The valve’s robust design and easy internal access help minimize maintenance frequency.

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