Series VTO
Triple Offset Butterfly Valve
Metal-seated triple offset butterfly valve rated ANSI 150 through 900. Available in stainless steel and carbon steel with graphite laminated sealing, Class VI shutoff, and ISO 5211 direct mount.
Technical Specifications
Triple eccentric metal-seated butterfly valve for demanding isolation and throttling applications.
Sizes
3″ – 48″ (DN 80 – DN 1200)
Pressure Rating
ANSI 150 / 300 / 600 / 900
Body Materials
CF8M / WCB / CF8 / WCC
Seats
Graphite Laminated / Metal
Standards
ASME B16.5, B16.47, B16.10, API 609
Quality / Test
ISO 9001, ISO 5209, API 598
Mounting
ISO 5211 Direct Mount
Features
Blow-Out Proof Stem, Class VI Leakage
Why Choose the Series VTO
Triple Eccentric Design
Three offset axes eliminate friction between disc and seat during operation. Metal-to-metal sealing delivers Class VI bubble-tight shutoff with zero wear, extending service life in high-cycle applications.
Extreme Temperature Range
Rated from −49°F to 1000°F (−196°C to 538°C). Graphite laminated disc seal and graphite packing handle cryogenic to high-temperature service without seat degradation.
Multiple End Connections
Available in wafer, lug, and flanged (RF/RTJ/BW) configurations across ANSI 150–900. Bare stem, locking handle, gear, and actuator (pneumatic, hydraulic, electric) options.
VRS vs. VRS-C - Key Differences
Data Center infrastructure standards and engineering tools.
Data Center Cooling Valves
Precision valves for chilled water, glycol, and CRAC systems with low PUE performance.
Hydrogen-Ready Valves
Series 32 high-pressure ball valves rated to -253°C for cryogenic hydrogen service
Performance Data
Output torque, gear ratio, and ISO 5211 flange compatibility for all 15 models.
| Model | Gear Ratio | Input Torque | Output Torque | Efficiency | ISO 5211 Flange |
|---|---|---|---|---|---|
| VMGS007 | 42:1 | 80 Nm | 720 Nm | 21% | F10 / F12 |
| VMGS008 | 50:1 | 110 Nm | 1,200 Nm | 22% | F12 / F14 / F16 |
| VMGS108 | 72:1 | 130 Nm | 2,000 Nm | 21% | F14 / F16 |
| VMGS158 | 70:1 | 150 Nm | 2,500 Nm | 24% | F12 / F14 / F16 |
| VMGS208 | 68:1 | 210 Nm | 3,300 Nm | 23% | F14 / F16 / F25 |
| VMGS218 | 78:1 | 206 Nm | 4,475 Nm | 28% | F14 / F16 / F25 |
| VMGS238 | 175:1 | 170 Nm | 6,250 Nm | 21% | F16 / F25 |
| VMGS308 | 275:1 | 150 Nm | 9,800 Nm | 24% | F16 / F25 |
| VMGS358 | 532:1 | 170 Nm | 18,000 Nm | 20% | F25 |
| VMGS408 | 700:1 | 190 Nm | 32,000 Nm | 24% | F25 / F30 |
| VMGS448 | 1,233:1 | 165 Nm | 42,000 Nm | 21% | F30 / F35 / F40 |
| VMGS508 | 1,254:1 | 190 Nm | 60,000 Nm | 25% | F35 / F40 |
| VMGS608 | 1,855:1 | 190 Nm | 80,000 Nm | 23% | F35 / F40 |
| VMGS708 | 2,292:1 | 190 Nm | 100,000 Nm | 23% | F40 / F48 |
| VMGS808 | 3,525:1 | 190 Nm | 150,000 Nm | 22% | F48 / F60 |
Where This Solution Works
General Industrial
High-cycle isolation and throttling in process piping, steam, and compressed gas systems.
Water & Wastewater
Large-diameter isolation in water transmission, intake structures, and treatment plant headers.
Chemical Processing
Metal-seated shutoff for corrosive media with stainless steel and carbon steel body/disc options.
Oil & Gas
High-pressure isolation in refinery, pipeline, and offshore platform applications up to ANSI 900.
HVAC & Mechanical
Steam isolation, cooling water, and auxiliary systems requiring tight shutoff at elevated temperatures.
Marine & Offshore
Stainless steel construction for ballast, seawater cooling, and shipboard high-pressure piping.
Technical Resources
Engineering tools and documentation for the Series VTO.
Need Series VTO Valves
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