Complete the form below to instantly download our Z-Series Portfolio and discover our solutions, capabilities, and expertise.
Union Tech Z-Series Valves are purpose-built for zero-leakage shutoff in severe and critical service applications where conventional valve designs fall short. Severe-service environments often include combinations of:
• High temperatures exceeding standard material limits
• High pressures approaching system design maximums
• Abrasive particulates causing mechanical wear
• Corrosive chemistry that degrades sealing surfaces
• Erosive flow regimes that compromise isolation integrity
Across chemical processing, petrochemicals, oil & gas, refining, power, and mining operations, our valves provide repeatable isolation performance, reduced maintenance intervals, and extended service life.
With decades of engineering development and field experience, Union Tech integrates advanced materials, precision machining, and application-specific design to ensure each valve performs reliably in its intended duty.
Chemical / Petrochemical manufacturing often requires severe-service conditions, involving high temperature, high pressure, corrosive chemistry, erosive particulates, and/or frequent cycling. Whether enabling the handling of hydrogen, the world’s most abundant element, or supporting the production of polyethylene, one of the most ubiquitous man-made materials, Union Tech engineers application-specific isolation valves that ensure reliable performance, safety, and process integrity.
Refining encompasses a broad range of processes, many of which feature unique, application-specific, and often proprietary technical requirements—all operating under severe-service conditions. Union Tech valves are custom-engineered to the exact demands of each service. For example, a metal-seated Z4 Rising-Stem Ball Valve may be specified for hydrogen compressor isolation, while a spray-and-fused chromium carbide–coated Z2 Metal-Seated Ball Valve is optimized for heavy oil and residue upgrading applications.
Union Tech valves are the preferred isolation valves for leading Upstream EOR (Enhanced Oil Recovery) operators working in heavy oil reservoirs. For these applications, Union Tech engineered a custom Z2 Metal-Seated Ball Valve design, capable of enhanced bi-directional shut-off and high cycle durability. These valves are widely deployed in the steam flow regulating systems – which mitigate phase splitting – as well as in production manifold service.
Midstream operations demand isolation valves capable of withstanding thermal extremes, cycling fatigue, and abrasive desiccant carryover, especially in applications like molecular sieve dehydration. Union Tech Z4 Rising-Stem Ball Valves advance the original tilt-and-turn design by incorporating state-of-the-art MSBV hardfacing technologies on sealing surfaces, delivering exceptional durability and performance in demanding Midstream environments.
Power generation environments—especially those handling superheated steam—demand isolation solutions with exceptional durability. Union Tech’s Z1 and Z1LW Metal-Seated Ball Valves were designed expressly for this service, delivering extended operating life and eliminating the frequent repair cycles typical of gate and globe valves. To streamline maintenance, the Z3 Power Valve System offers inline, weld-free replaceability, saving time while improving system availability. For applications involving solids handling, unique process conditions, or other specialized requirements, the Z2 Metal-Seated Ball Valve offers custom-engineered, plant-specific valve designs that address the operational challenges of each individual facility.
The Z2 Mining Series Valves are purpose-built to meet the rigorous performance demands of modern mining operations—specifically the high temperatures, high pressures, and abrasive, corrosive slurries characteristic of pressure oxidation (POx) and high-pressure acid leaching (HPAL) autoclave systems. For Slurry Transport applications, Z2 valves are engineered and optimized for extreme abrasion and erosion resistance, ensuring reliable, long-term isolation performance throughout the valve’s operating life.
Complete the form below to instantly download our Z-Series Portfolio and discover our solutions, capabilities, and expertise.
Polyethylene
Polypropylene
Acetic Anhydride
Phosgene Gas – lethal media
Isophthalic Acid
Olefins
Isocyanate
FCC – Fluidized Catalytic Cracking
Continuous Catalytic Reforming (CCR)
Delayed Coking
Gasification
Hydrotreating / Hydrocracking
Fixed Bed Hydrotreating
Fixed Bed Hydrocracking
Reforming
Visbreaking
Emergency Shut Down (ESD)
HIPPS
Compressor Anti-Surge
Gas to Flare / Depressurization
First Stage Separation
Metering / Gathering Control
Main Gas Storage Flow Control
Plant Depressurization
LNG Feed Gas
Dryer Sequence (Mol-Sieve)
Boiler Vents & Drains
Soot Blower Isolation
Blowdown
Pressure Steam Injection
White / Black Liquor
Lime Slurry Isolation & Control
Digester Steam Control
Digester Gas-Off
Sky Vents
Dryer Pressure Control
High Pressure Acid Leaching (HPAL)
Pressure Oxidation (POx)
Autoclave Acid Injection ESD
Autoclave Discharge
Oxygen Injection
System Isolation
Pump Station
Choke Station
Concentrate, Ore and Tailings
Choke Loop Diversion
Vents And Drains
