Series 21
2-Piece Ball Valve
Compact full port 2-piece ball valve rated 1000 PSI. Available in stainless steel, carbon steel, Duplex, and Hastelloy C with ISO 5211 direct mount and multiple end connections.
Technical Specifications
Compact 2-piece construction for reliable isolation in general industrial applications.
Sizes
1/4″ – 3″ (DN 8 – DN 80)
Pressure Rating
1/4″–3″: 1000 PSI
Body Materials
CF8M / WCB / CF3M / Duplex / Hastelloy C
Seats
RTFE, PEEK, TFM1600, UHMWPE, CTFE
Standards
ASME B1.20.1, BSPP, ISO 228-1, BSPT, ISO 7-1
Quality / Test
ISO 9001, ISO 5209, EN 10204-3.1, API 598
Mounting
ISO 5211 Direct Mount
Features
Blow-Out Proof Stem, Full Port
Why Choose the Series 21
Compact 2-Piece Design
Space-efficient 2-piece body construction provides reliable shutoff in tight installations. Full port design ensures minimal pressure drop and unrestricted flow.
Broad Material Compatibility
CF8M stainless steel body with RTFE seats standard. Also available in Carbon Steel, 316L, Duplex, and Hastelloy C for demanding corrosion environments.
Blow-Out Proof Stem
Integral safety feature prevents stem ejection under pressure. ISO 5211 direct mount pad enables quick actuator installation without additional brackets.
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
Process piping, steam, compressed air, and water systems across manufacturing and plant operations.
Water & Wastewater
Municipal and industrial water treatment, distribution systems, and chemical feed lines.
Chemical Processing
Corrosive media handling with Duplex and Hastelloy C body options for aggressive environments.
Oil & Gas
Upstream and downstream applications with blow-out proof stem for safe, reliable isolation.
HVAC & Mechanical
Chilled water, hot water, and glycol loops for commercial buildings, data centers, and district energy systems.
Marine & Offshore
Stainless steel and exotic alloy construction for saltwater, ballast, and shipboard piping systems.
Technical Resources
Engineering tools and documentation for the VMG Series.
Need Series 21 Valves
For Your Project?
Tell us your application requirements — pressure, temperature, media, and end connections. Our engineering team will provide valve selections, Cv calculations, and actuator recommendations within 24 hours.