Dual Plate Check Valve
UL Listed Wafer Dual Plate Check Valve
Wafer-style dual plate check valve for backflow prevention. Silent operation with quick response to flow reversal. Compact design for installation between flanges.
Key Features
- UL Listed for fire protection
- Dual plate design - silent operation
- Wafer body - compact and lightweight
- Spring-assisted closing
- Cast iron body with FBE coating
- SS304 or SS316 disc options
Industries Served
Oil & Gas
Upstream, Midstream & Downstream
Petrochemical
Refineries & Chemical Plants
Fire Protection
NFPA Compliant Systems
Water Treatment
Desalination & Processing
Power Generation
Thermal & Hydroelectric
LNG & Gas
Qatar & KSA Projects
Why Choose Supreme Valves
Export-Ready Documentation
Complete documentation packages including Certificate of Origin, commercial invoices, and pre-shipment inspection reports for seamless customs clearance.
38+ Years Manufacturing Excellence
Three decades of valve manufacturing expertise supplying critical infrastructure projects across India, Middle East, Africa, and Southeast Asia.
International Standards Compliance
API 6D, API 600, ASME B16.34, BS 1873 certified. Products meet SABER, PED, and NFPA requirements for Middle Eastern and global markets.
Reliable delivery plans
On-time delivery from Ahmedabad warehouse. Sea-worthy export packaging with VCI protection for containerized shipments worldwide.
Technical Specifications
| Design Standard | API 594, AWWA C508 |
| Face to Face | API 594 |
| End Connection | Wafer Type |
| Pressure Rating | PN16 / Class 150 |
| Size Range | DN50 - DN600 (2" - 24") |
| Body Material | Cast Iron / Ductile Iron |
| Disc Material | SS304 / SS316 |
| Spring Material | SS316 |
| Seat Seals | Metal-to-Metal / EPDM |
Purchase Options
Materials of Construction (MOC)
| Component | Material Specification |
|---|---|
| Body & Bonnet | Ductile Iron (ASTM A536 / EN-GJS-400-15) |
| Stem / Spindle | SS 410 / SS 420 |
| Seat / Trim | EPDM / NBR / Bronze |
Technical Specifications
| Parameter | Specification / Standard |
|---|---|
| Manufacturing / Design Standard | EN 1171 / AWWA C509 / BS 5163 |
| Testing Standard | API 598 / EN 12266-1 |
| Pressure Rating | PN16 / PN25 |
Material of Construction
| S.N. | Parts Name | Material |
|---|---|---|
| 1 | BODY | ASTM A216 Gr. WCB |
| 2 | CLOSURE PLATES | ASTM A217 Gr. CA-15 |
| 3 | SEAT | WCB + 13% Cr. Facing / SOFT SEAT |
| 4 | SPRING | INCONEL X750 |
| 5 | HINGE PIN | AISI 410 |
| 6 | STOP PIN | AISI 410 |
| 7 | PLATE LUG BEARINGS | AISI 410 |
| 8 | BODY LUG BEARINGS | AISI 410 |
| 9 | SEALS | PTFE |
| 10 | PLUGS | CARBON STEEL |
Testing Details & Standards
- Class: 150#
- Hydro Test Pressure Body: 30 Kg/cm²
- Seat: 22 Kg/cm²
- Duration: 1 Minute
Dimension Tables
| Size | Inch | MM | L | ØA | ØB | ØD |
|---|---|---|---|---|---|---|
| 2" | 2" | 50 | 60 | 51 | 65 | 101 |
| 2.1/2" | 2.1/2" | 65 | 67 | 65 | 76 | 120 |
| 3" | 3" | 80 | 73 | 80 | 92 | 132 |
| 4" | 4" | 100 | 73 | 100 | 113 | 173 |
| 5" | 5" | 125 | 86 | 127 | 135 | 193 |
| 6" | 6" | 150 | 98.5 | 152 | 163 | 218 |
| 8" | 8" | 200 | 127 | 203 | 204 | 275 |
| 10" | 10" | 250 | 146 | 254 | 262 | 337 |
| 12" | 12" | 300 | 181 | 305 | 315 | 407 |
| 14" | 14" | 350 | 184 | 350 | 363 | 449 |
| 16" | 16" | 400 | 191 | 400 | 407 | 512 |
| 18" | 18" | 450 | 203 | 450 | 465 | 547 |
| 20" | 20" | 500 | 219 | 500 | 510 | 604 |
| 22" | 22" | 550 | 222 | 550 | 561 | 670 |
| 24" | 24" | 600 | 222 | 600 | 610 | 715 |