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Knife Gate Valves
Knife Gate Valve 300mm Class 600 Hydraulic Actuated
Large-bore, high-pressure knife gate valve for demanding industrial applications. Features 12-inch bore, hydraulic actuation, and robust CS GR.460 body with SS304 internals for maximum durability and corrosion resistance.
Key Specifications
- Size: 300mm (12 inch) NB
- Pressure Class: ASME 600 (Class 600)
- Actuation: Hydraulic
- End Connection: Flanged as per ASME B16.5
Design Standards
- Specification: MD-101-SMEM-EG-PI-SPC-0004
- Flange Standard: ASME B16.5
- Testing: API 598 / BS 6755 Part-I
Salient Features
- Large 12-inch bore for high-flow applications
- Class 600 rating for high-pressure service
- Hydraulic actuated for powerful operation
- SS304 gate disc for corrosion resistance
- Knife-edge design for slurry isolation
- ASME B16.5 flanged connections
- Robust CS GR.460 body construction
- Bi-directional sealing capability
Materials of Construction (MOC)
| Sr. No. | Component | Material | Specification |
|---|---|---|---|
| 01 | Body | Carbon Steel GR.460 | High strength structural steel |
| 02 | Gate Disc | SS 304 | ASTM A240 Type 304 |
| 03 | Spindle | SS 304 | ASTM A276 Type 304 |
| 04 | Carrier | Carbon Steel GR.460 | High strength structural steel |
| 05 | Bonnet | Carbon Steel GR.460 | High strength structural steel |
| 06 | Connecting Flanges | Forged Steel | ASTM A105 |
| 07 | Packing | Graphite | Braided graphite rings |
| 08 | Bolting | Alloy Steel | ASTM A193 Gr.B7 / A194 Gr.2H |
| 09 | Hydraulic Actuator | Steel/Aluminum | As per manufacturer standard |
Dimensions (Class 600 - ASME B16.5)
| Parameter | Value | Unit |
|---|---|---|
| Nominal Size | 300 | mm (12 inch) |
| Face to Face (Short Pattern) | 318 | mm |
| Flange OD | 520.7 | mm |
| Bolt Circle Diameter (PCD) | 450.8 | mm |
| Number of Bolts | 20 | nos |
| Bolt Hole Diameter | 34.9 | mm |
| Flange Thickness | 72.9 | mm |
| Raised Face Height | 6.4 | mm |
| Bore ID | 295.3 | mm |
Dimensions as per ASME B16.5 Class 600. Tolerance: ±3mm.
Technical Specifications
| Parameter | Specification |
|---|---|
| Valve Type | Knife Gate Valve |
| Size | 300mm (12 inch) NB |
| Pressure Rating | ASME Class 600 (PN 100) |
| Design Pressure | 102 bar @ 38°C |
| Temperature Range | -29°C to +425°C |
| End Connection | Flanged (RF) as per ASME B16.5 |
| Operation | Hydraulic Actuator |
| Flow Characteristic | Full Bore, Bi-directional |
| Seat Type | Metal to Metal |
| Leakage Class | Class IV (Metal Seated) |
| Testing Standard | API 598 / BS 6755 Part-I |
Test Pressure
| Test Type | Pressure (bar) | Pressure (PSI) | Medium |
|---|---|---|---|
| Shell / Body Test (Hydrostatic) | 153 | 2220 | Water |
| Seat Test (Hydrostatic) | 112 | 1628 | Water |
| Seat Test (Pneumatic) | 7 | 100 | Air |
Applications
- Mining & Mineral Processing
- Heavy Slurry Handling
- Wastewater Treatment
- Power Plants
- Oil & Gas
- Pulp & Paper
Frequently Asked Questions
What size is this Knife Gate Valve?
This is a 300mm (12 inch) nominal bore knife gate valve, one of the larger sizes suitable for high-flow industrial applications.
What is the maximum working pressure?
Rated for ASME Class 600, this valve can handle working pressures up to 102 bar (1480 PSI) at ambient temperature.
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