Z4 – Rising Stem Ball Valves

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Z4 – RISING STEM
BALL VALVES

Description

The design and performance advantages of the Z4 Rising Stem Ball Valve enable it to replace traditional ball, gate, and plug valves in isolation applications, such as gas processing plants using molecular sieve systems for switching service, pipelines, gas transmission, and other high-performance applications requiring frequent cycling with positive shutoff operation.

Gallery

Features

Designed per ASME B16.34 and API Spec 6D
0.75″ to 24.00″ Bore Sizes
150 to 2500# ANSI Classes
Full or Reduced Ports
Enclosed or OS&Y Bonnet Designs
Materials: WCC, WCB, LCC, LCB, and CF8M; Forgings and Other Materials Available
Available in SW, BW, RFF, and NPT Ends
Flanges Drilled per ANSI/ASME B 16.5
Testing Standards:
Seat – ISO 5208 A
Fugitive Emissions – ISO 15848-1A
Fire – API 607, 7th Edition
Operation: Manual, Electric, or Pneumatic
Temperature Range: -155°F TO 800°F
Low Torque Operation – Elimination of seal rubbing enables handwheel operation for most sizes; gearbox operators required for larger valves
Dual Hardened Stem Slots & Guide Pins – Controls lift and turn of the stem
Injectable Stem Packing Material – Enables in-service maintenance and controls fugitive emissions for enclosed bonnet models
Top Entry Design – Provides simplified maintenance by allowing inline inspection and repair of depressurized systems
Friction-Free Sealing – Tilt-and-turn cam mechanics eliminates abrasion resulting in reduced ball and seat wear, longer operating life, and increased return on investment
Mechanical Cam Closure – Enables forced sealing
Self-Cleaning – Product flow around 360° of the ball face flushes foreign material away from the seat, cleaning the valve and diminishing localized high velocity erosion damage
Stem Guide Locking Mechanism – Superior sealing performance at stem guide with anti-loosening locking design
Variable Seat Design Options – Soft, metal, and block & bleed seats can be specified according to specific application. Seats can be further customized to optimize performance.
Pressed-In Seat – Enables inline replacement using extraction tool. Available in Teflon®, Nylon, or PEEK™
Floating Seat – Leverages Z2 severe-service floating ball valve technology to streamline seat replacement
Surface Hardened Metal Seats – Leverages commercially proven Z-Series HVOF coating
technology. Metal seats are HVOF coated and mate-lapped to the ball resulting in > 60 HRc for true severe service durability. Coatings may be customized per application.

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