Overview
The Flowserve Valtek Mark One Globe Control Valve 1.5″ Class 600 WCB Steel is a proven industrial control valve engineered for reliable service in demanding applications. This globe-style valve combines heavy-duty construction with repeatable performance across a wide range of flow control tasks. The Mark One series is recognized throughout the industry as a dependable choice for precise, cost-effective fluid and gas control.
Key Features
- High positioning accuracy to 0.1% full scale for consistent flow control
- Oversized blind flanges accommodate full jacket or standard flanges for partial jacket cooling
- Heavy-duty stem guidance design minimizes wear and extends service life
- Quick disassembly via bonnet bolts allows fast field maintenance without removing the valve from the line
- ANSI Class 600 (PN 100) rated body rated for pressures up to 600 PSI
- WCB carbon steel body construction ensures durability in corrosive and high-temperature industrial environments
Technical Specifications
- Valve Model: Valtek Mark One (MK1)
- Size: 1.5 inch (DN 40)
- Body Rating: ANSI Class 600 / PN 100
- Body Material: WCB Carbon Steel
- Design Type: Globe / Linear control valve
- Pressure Rating: 600 PSI (42 bar)
- Weight: 70 LBS
- Flow Characteristic: Equal percentage / Linear (position-dependent)
- Operating Temperature Range: -40°F to +400°F (-40°C to +205°C) depending on configuration
- Connection: Flanged (standard design)
- Manufacturer: Flowserve Corporation, Valtek Control Products
Typical Applications
- Hydrocarbon processing and refinery service
- Chemical plant flow regulation
- Power generation steam and water control
- Industrial steam systems and thermal processes
- Liquid and gaseous media control in process piping
- Cooling water and jacket water systems
Compatibility & Replacements
Compatible With
- Air-to-open and air-to-close actuator systems
- Pneumatic control systems and valve positioners
- Standard ANSI Class 600 flanged piping systems
- Jacket cooling systems rated 150 PSIG inlet pressure
- Industrial process control loops and instrumentation
Replaces / Drop-In Replacement For
Verify compatibility with your system integrator before ordering. Flowserve Mark One valves in 1.5″ Class 600 WCB configuration are direct replacements for identically specified units. Consult your installation drawings and Flowserve documentation to confirm interchangeability with your original equipment.
Works With
- Flowserve Logix 3200 and other Valtek positioner models
- Standard pneumatic control systems (3–15 PSIG)
- ANSI/ISA instrumentation standards
- Industrial process automation and DCS platforms
