NPS 24″ Class 150 LUG Non-Rising Stem Unidirectional Knife Gate Valve – GG25
Description
The NPS 24″ Class 150 LUG Non-Rising Stem Unidirectional Knife Gate Valve is a heavy-duty industrial isolation valve engineered by XIAMEN GUTE VALVE MANUFACTURING COMPANY. Built from high-tensile iron casting for structural rigidity and cost-effective fluid containment, this valve features a beveled shearing knife edge and a pocketless full-port bore. It is designed to cleanly slice through fibrous pulp, municipal sewage, and abrasive mineral slurries without clogging or solid accumulation.
Engineering Configuration
NPS 24″ | Class 150 | Unidirectional Knife Gate Valve | GG25 | LUG Ends | Non-Rising Stem
- Face-to-Face Length (L): 154 mm (EN 558 Series 20 / MSS SP-81)
- Net Weight: 620 kg
- Stem Configuration: Non-Rising Stem
- Sealing Performance: API 598 Rate A Soft Seat / MSS SP-81 Metal Seat
- Top Flange: ISO 5211 Standard Actuator Mounting Pad
Rigorous Quality Assurance
- 1. Material Spectro Analysis: 100% PMI verification on all pressure-retaining body castings and gate blades.
- 2. MSS SP-81 Shell Hydrostatic Test: Tested at 1.5x rated working pressure with zero allowable body wall leakage.
- 3. API 598 Seat Leakage Test: 1.1x hydrostatic seat testing ensuring zero bubble/drop leakage for soft seats or <= 40 ml/min/inch for metal seats.
- 4. Actuation Cycling Test: 100% factory stroking and limit switch verification under simulated shop air pressure.
Frequently Asked Technical Questions
A: Unidirectional valves rely on downstream seat guidance and body wedges for shutoff in pressurized flow lines. Bidirectional valves incorporate a perimeter elastomer U-seat providing bubble-tight isolation in both flow directions.
A: The acute beveled edge acts as a mechanical shear, cleanly slicing through dense pulp, sewage rags, and crystalline solids without compaction or jamming.
Need Technical Assistance or Custom Sizing?
Additional information
| Material | |
|---|---|
| Pressure | |
| Valve Size | |
| Connection | |
| Design Standard | ASME Standard |
| Size | NPS 24" |
| Pressure Class | Class 150 |
| Body Material | GG25 |
| End Connection | LUG |
| Operation | Non-Rising Stem Handwheel |
| Design Structure | Non-Rising Stem + Bi/Unidirectional Gate |
| Manufacturer | XIAMEN GUTE VALVE MANUFACTURING COMPANY |
| Trim / Internals | Beveled Knife Blade + Resilient/Metal Seat |
