What is a Gate Valve?
A linear-motion isolation valve with vertical wedge/parallel slab gate. Designed for full-bore, low-ΔP service with bidirectional sealing (ANSI/FCI 70-2 Class IV).
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![Knife Gate Valve]()
Knife Gate ValveKnife Gate Valve cut through heavy slurries and viscous media using a sharpened, guillotine-like gate for positive isolation.view more -
![Sluice Gate Valve]()
Sluice Gate ValveSluice Gate Valve provide unobstructed flow isolation in large conduits using a vertical sliding gate.view more -
![Pneumatic Gate Valve]()
Pneumatic Gate ValvePneumatic Gate Valve automate high-flow isolation using compressed air to drive a wedge gate vertically.view more -
![Electric Gate Valve]()
Electric Gate ValveElectric Gate Valve automate high-pressure isolation via motor-driven stem rotation that lifts/lowers a wedge gate.view more -
![Hydraulic Gate Valve]()
Hydraulic Gate ValveHydraulic Gate Valve deliver ultra-high-pressure isolation using hydraulic fluid to drive a wedge gate vertically.view more
Advantages
Zero Flow Restriction
100% port area when open.
Slurry Handling
Knife-edge gates cut through 60% solids.
Fire-Safe
API 607 metal-seated designs.
High-Pressure Capability
ASME Class 2500 (420 bar).
Technical Specifications
- Stem Types: Rising (OS&Y) or non-rising (NRS).
- Materials: ASTM A216 WCB body, 13Cr/Stellite trim, EPDM seals.
- Operation: Manual gear (20:1 ratio), hydraulic actuator (350 bar).
- Leakage: <0.01% of CV per ANSI/FCI 70-2.
Types
Flexible Wedge
Thermal expansion compensation.
Knife Gate
Abrasive slurry service (Ra <20μm seat finish).
Slab Gate
Pipeline pigging compatibility.
Conduit Gate
Full-bore for scrapers.
Applications
Raw water intake isolation (DN3000+)
Reservoir outlet control
Sludge dewatering line shutoff
Power plant main steam isolation
Floodgate control structures
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