

Double Disc Gate Valve
High Performance • Durable • Leak Proof
Reliable Double Disc Gate Valve suitable for various industrial process applications
Technical Specifications
Key Features & Applications
Industrial piping systems require reliable isolation valves that can provide secure shut-off, low flow resistance and dependable sealing under demanding operating conditions. African Valve, a Double Disc Gate Valve Supplier in Egypt, supplies double disc gate valves for isolation in oil & gas, refineries, petrochemical plants, power generation, chemical processing, water systems and other industrial applications.
Double disc gate valves use two discs within the gate assembly to establish sealing against the valve seats. Depending on the design, the discs can use a mechanical, spring-loaded or expanding arrangement to develop seating force. When fully open, the gate is lifted clear of the flow passage, providing a relatively unobstructed flow path and low pressure loss.
Technical Specifications
| Parameter | Specification |
|---|---|
| Valve Type | Double Disc Gate Valve |
| Function | Pipeline Isolation / Shut-Off |
| Size Range | Project-Specific |
| Pressure Rating | Class 150 to Class 2500 / PN25 to PN450, depending on design |
| Gate | Double Disc / Application-Specific Configuration |
| End Connection | Flanged / Butt Weld / Other applicable connections |
| Operation | Handwheel / Gear / Pneumatic / Electric / Hydraulic |
| Installation | Horizontal / Vertical, depending on configuration |
Materials & Components
| Component | Typical Materials |
|---|---|
| Body & Bonnet | ASTM A216 WCB / A352 LCB / A217 WC6 / WC9 / A351 CF8 / CF8M |
| Discs | Carbon Steel / Alloy Steel / Stainless Steel / Duplex |
| Seat Rings | A105 / A182 F6a / F304 / F316 / Hard-Faced or Stellite-Faced |
| Stem | AISI 410 / A182 F6a / F304 / F316 / 17-4PH |
| Packing | Flexible Graphite / Expanded Graphite / PTFE / Low-Emission |
| Gasket | Spiral-Wound / Flexible Graphite / RTJ, where applicable |
| Fasteners | A193 B7 / B8 / B8M / A320 L7 with suitable A194 nuts |




