Series VRS / VRS-C
Resilient Lined Butterfly Valve
High-performance butterfly valve rated ANSI Class 125/150 in wafer and lug styles. Available in cast iron, ductile iron, stainless steel, aluminum, and bronze with ISO 5211 direct mount and blow-out proof stem.
Technical Specifications
Resilient-lined butterfly valve for general industrial and process applications.
Sizes
2″ – 48″ (DN 50 – DN 1200)
Pressure Rating
ANSI Class 125 / 150
Body Materials
Cast Iron / Ductile Iron / SS / Alum / Bronze
Seats
NBR, EPDM, FKM, PTFE, Silicone
Standards
API 609, BS 5155, ISO 5752, EN 593
Quality / Test
ISO 9001, API 598, MSS-SP-61
Mounting
ISO 5211 Direct Mount (2″–12″)
Features
Blow-Out Proof Stem, Bi-Directional
Why Choose the Series VRS
One-Piece Body Construction
Tight shut-off design with one-piece body and cartridge-type seat. Hand-polished disc maximizes flow and minimizes resistance for high Cv performance. Epoxy coated for corrosion protection.
Wafer & Lug Configurations
Available in both wafer and lug body styles. Lug body valves rated for 150 PSI dead-end service. Shell tested to 150% and seat tested to 110% of maximum working pressure.
Flexible Operation Options
Lever, gear operated, or bare stem configurations. ISO 5211 mounting pad with square shaft (2″–14″) and key-type connection (16″–48″). Under-cut disc available upon request.
VRS vs. VRS-C
Both models share the same pressure ratings, sizes, and seat materials. Here’s what sets them apart.
Series VRS
- One-piece and two-piece stem options (SS 304/316/410/420)
- Encapsulated phenolic or aluminum-backed cartridge seat
- Boot seat design available
- Upper and lower stem construction for larger sizes
- Phenolic support ring (2″–14″), Aluminum (16″–24″)
Series VRS-C
- One-piece stem design (SS / Bronze)
- Cartridge-type seat with simplified construction
- FRP bushing system throughout
- Compact stem retainer design
- Streamlined assembly for easier maintenance
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 stainless steel and bronze body/disc options for aggressive environments.
Data Center
Blow-out proof stem and PTFE seat options for upstream and downstream isolation applications.
HVAC & Mechanical
Chilled water, hot water, and glycol loops for commercial buildings and district energy systems.
Marine & Offshore
Aluminum bronze disc and stainless steel construction for saltwater and shipboard piping systems.
Technical Resources
Engineering tools and documentation for the VMG Series.
Need Series VRS Valves
For Your Project?
Tell us your application requirements — size, pressure class, body material, and seat type. Our engineering team will provide valve selections, Cv calculations, and actuator recommendations within 24 hours.