Mark One 3-Way

Mark One 3-Way

A three-way version of the widely used Valtek Mark One valve, the Valtek Mark One 3-Way valve is used for combining or diverting service. Like the Mark One, it offers superior performance in liquid and gaseous services in simple, rugged design.

Brand: Valtek
Category: Linear Control Valves
Valve Size 1/2" to 12"
Pressure Class Standard ASME B16.34
Pressure Class Range Class 150, 300, 600, 900, 1500, 2500
Body 3-Way Globe
End Connections Separable Flange, Integral Flange, Screwed (NPT), Socket Weld, Butt Weld, Grayloc
Face-to-Face Standard Manufacturer Standard
Bonnet Standard, Extended, Cold Box Extended, Cryogenic, Bellows Seal
Packing Standard, Twin Seal, Vacuum Seal, Environment Fugitive Emissions, Live-Loaded
Guiding Double Top Stem Internal to Bonnet
Trim Plug & Clamped Seat, Special Cage & Stack Designs
Trim Characteristics Equal Percentage, Linear, Quick-Open
Seating Metal-to-Metal & Soft
Shut-Off Classification ANSI FCI 70-2 Class IV, V, VI

Double Top Stem Guiding moves the critical function of assuring alignment of the trim out of the flow path

Single Piece Plug & Stem assures integrity of the assembly, avoiding side load fracturing

Oversized Stem provides greater durability for high-pressure applications

Plug Contours provide flow characteristics with higher rangeability than cage designs

Floating Seat is clamped in-place after alignment to ensure tight-shutoff and easy service

Seat Retainer (Cage) is not a throttling component, allowing for more cost-effective material selection

Bolted Bonnet eliminates service issues related to threaded designs

Severe Service Trim options can easily be designed or retro-fitted into standard trim valve

Certifications Canadian Registration Number (CRN)
PED Directive 97/23/EC
Design Standards ASME B16.5 – Pipe Flanges & Flanged Fittings
ASME B16.9 – Factory-Made Wrought Buttwelding Fittings
ASME B16.10 – Face to Face & End Dimensions of Valves
ASME B16.11 – Forged Fittings, Socket-Welding & Threaded
ASME B16.25 – Buttwelding Ends
ASME B16.34 – Valve Flanged, Threaded, and Welding End
ASME SA Materials
ASTM A Materials
Quality IS0 9001:2008
ATEX QAN
IECEX QAR