·Control Valve
Valtek Mark One Control Valve
The Valtek Mark One globe control valve offers superior performance in liquid and gaseous services, while also permitting easy, fast and inexpensive maintenance. The industry choice for a simple, reliable, tough globe valve.
Key Benefits
- 01Lower total lifetime cost through high interchangeability and rugged heavy-duty parts
- 02Versatile: globe, angle, three-way, and jacketed body styles
- 03Trim that does not stick or gall, thanks to double-stem guiding out of the flow stream
- 04Easy, fast and inexpensive maintenance with top-entry servicing and clamped-in seat ring
- 05Leakproof when closed with self-aligning seat ring and high-thrust spring-cylinder actuator
- 06Built for the toughest service with corrosion-resistant construction, high thrust, and anti-cavitation/noise-trim options
- 07Compact and easy to install — smaller actuator, lower center of gravity, lighter weight
- 08Reliable, predictable service with stiff cylinder actuator, accurate positioning and controlled high-speed stroking
Technical Features
- 01Spring-cylinder actuated for stiffness, high positioning accuracy (0.1% full scale), repeatability, and faithful response
- 02Handles up to 150 psig (10.3 barg) supply air with thrust to shut off against much higher fluid pressures
- 03ANSI Class 600 (PN 100) body used for ANSI Class 150, 300 and 600 (PN 16, 40, 100) ratings through 4-inch (DN 100)
- 04Double top-stem guided — completely avoids contact between plug and seat retainer
- 05Clamped-in seat ring — disassembled quickly and easily by removing bonnet bolts
- 06Self-aligning seat ring enhances shutoff capability
- 07Sizes from 0.5 to 48 inch (DN 15 to 1200) in ANSI Class 150 through 2500 (PN 16 through 400)
- 08End connections: separable flange, integral flange, NPT, socketweld, buttweld, Grayloc
- 09Body materials: carbon steel, stainless steel, Monel, nickel, chrome-moly, Titanium, Alloy 20, bronze, Hastelloy B, Hastelloy C
- 10Flow characteristics: equal percentage, linear, quick-open
- 11Trim types: standard full-area, reduced, and integral
- 12Bonnet types: standard, extended, cold box extended, Guardian/Guardian II formed metal bellows seal
- 13Metal seats handle Class IV shutoff (ANSI B16.104); soft seats available for ANSI Class VI bubble-tight shutoff
- 14Factory Mutual approved as a fuel service valve (0.75 - 3-inch / DN 20 - 80)
- 15Anti-cavitation and noise-trim options available
Applications
- Boiler feedwater systems (e.g., pulp plants)
- Chemical plants
- Liquid hydrocarbon plants (back-pressure control)
- Cryogenic services (liquid nitrogen, O₂ vents)
- Aerospace testing
- Emergency fire water systems
- PSA (Pressure Swing Adsorption) skids
- Pulp and paper industries
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