Gate Valve – Full-Port Flow Control for Industrial Pipelines
A gate valve operates by vertically lifting a wedge-shaped gate from the fluid path, enabling unrestricted straight-line flow with zero pressure drop when fully open. Its hallmark feature is the precision-machined planar sealing surfaces between the gate and seats, ensuring bubble-tight closure in high-pressure systems.
Key Features & Advantages:
☑ Full-Port Design:
Eliminates flow turbulence and energy loss, ideal for oil, gas, and water transmission pipelines.
Wedge gates (flexible, solid, or split) compensate for thermal expansion and seat wear.
☑ Robust Sealing Performance:
Parallel or tapered sealing faces (metal-to-metal or resilient seated) for leak-proof operation up to ASME Class 2500.
Bi-directional sealing capability for versatile installation.
☑ Industrial Durability:
Bodies in cast steel (WCB/WCC), stainless steel (CF8M/CF8), or alloy steel (WC6/WC9).
Compliant with API 600/603 standards for refinery, petrochemical, and power generation applications.
Common Applications:
Oil & Gas: Crude oil trunk lines, wellhead isolation.
Water Treatment: Mainline shutoff in distribution networks.
Steam Systems: Boiler isolation, turbine bypass control.
API 600 Cast Steel Gate Valve
API 600 Gate Valve, Bolted Bonnet Valve, ASME B16.34 Valve, Fire-Safe Gate Valve, High-Pressure Oil & Gas Valve
Robust Bolted Bonnet: ASME B16.34-compliant body-bonnet connection for high-pressure/temperature oil & gas pipelines (Class 150-2500).
Metal-to-Metal Seating: Solid/flexible wedge options ensure zero leakage under extreme thermal cycling.
Full-Bore Design: Minimizes pressure drop for crude oil, steam, or chemical transfer.
Field-Serviceable: Top-entry maintenance allows in-line seat replacement without pipeline removal.
Fire-Safe & Fugitive Emission Compliance: API 607/ISO 15848-certified stem seals and graphite packing.
Optional Ports: By-pass, drain, or sealant injection for enhanced process control.
Design standard: API 600
Face to face: ASME B16.10
Flange end: ASME B16.5/ASME B16.47
BW end: ASME B16.25
Wall thickness: API 600/ASME B16.34
Inspection and test: API 598
Pressure and temperature rating: ASME B16.34
Product range: NPS 2″~NPS 64″,CL150~CL2500
Material: WCB､LCB､WCC､WC6､WC9､CF8､CF8M､CF3､CF3M､A890 4A etc.
API 6D Through Conduit Gate Valve
API 6D Gate Valve, Through Conduit Valve, Bi-Directional Sealing, Piggable Pipeline Valve, Low Fugitive Emission Valve
Full-Bore Piggable Design: Smooth flow path for pipeline pigging and minimal pressure drop in oil & gas midstream.
Solid Slab/Expanding Gate: Bi-directional sealing with API 6D DBB/DIB options for isolation safety.
Blowout-Proof Stem: Anti-static design with low fugitive emission packing (ISO 15848 compliant).
Extended Stem: Optional buried service adaptation for underground pipelines.
Multi-Actuation: Manual, electric, pneumatic, or hydraulic operation for terminals, compressor stations.
Design standards: API 6D, ASME B16.34, ISO 14313
Flange end: ASME B16.5/ASME B16.47
Gate Type: Slab or Expanding
Wall thickness: ASME B16.34
Inspection and test: API 6D
Pressure Ratings: ANSI 150 to 2500 / PN 10 to 420 / ASME B16.34
Product range: NPS 2″~NPS 60″,CL150~CL1500
Body Materials: Carbon Steel, Stainless Steel, Duplex, Inconel
Operation: handle, bevel gear, electric, pneumatic, etc.
API 603 Corrosion Resistant Cast Steel Gate Valve
API 603 Gate Valve, Corrosion Resistant Valve, ASME B16.34 Stainless Valve, Bidirectional Sealing Valve, Cryogenic Service Valve
API 603/ASME B16.34 Design: Cast stainless steel (CF8M/CF3M) for chlorides, acids, and seawater corrosion resistance.
Bidirectional Sealing: Tight shutoff in oil, gas, or chemical flows with Integral seat, metal-to-metal seats.
Bonnet Options: Bolted Bonnet: Easy maintenance and seat replacement. Welded Extended Bonnet: Cryogenic service (-196°C) for LNG/LOX applications.
Low Lifetime Cost: Field-repairable design reduces downtime (API 600 repair kits compatible).
Design standard: API 603
Face to face: ASME B16.10
Flange end: ASME B16.5/ASME B16.47
BW end: ASME B16.25
Wall thickness: API 600/ASME B16.34
Inspection and test: API 598
Pressure and temperature rating: ASME B16.34
Product range: NPS 2″~NPS 64″,CL150~CL2500
Material: WCB､LCB､WCC､WC6､WC9､CF8､CF8M､CF3､CF3M､A890 4A etc.
API 602 Forged Steel Gate Valve
API 602 Gate Valve, Forged Steel Valve, High-Pressure Steam Valve, Fugitive Emission Compliant Valve, CoCr Hardfaced Wedge
Compact Forged Body: Ideal for high-pressure steam, oil, and gas pipelines (Class 150-2500).
Dual Bonnet Options: Bolted Bonnet or Welded Bonnet leak protection in critical service.
CoCr Alloy Wedge: Hardfaced surface reduces friction, extends seat life in abrasive media.
Seal-Welded Seats: Class 1500/steam service valves with zero seat leakage.
Design standard: API 602/BS5352
Face to Face: flange/ butt welding end to ASME B16.10
SW & threaded end to manufacturer standard
Flange end: ASME B16.5
BW end: ASME B16.25
Wall thickness: API 602/ASME B16.34
Inspection and test: API 602
Pressure and temperature rating: ASME B16.34
Product range: NPS ½″~NPS 3″,CL150~CL2500
Material: A105､LF2､F11､F22､F51､F91､F304､F316､F304L､F316L etc.
Operation: handle, bevel gear, electric, pneumatic, etc.
