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API 6D API 600 Manual Gate Valve

API 6D API 600 Manual Gate Valve

The api 6d api 600 manual gate valve is a high-performance isolation valve engineered for demanding pipeline applications, providing reliable on-off flow control with minimal pressure drop in oil, gas, and petrochemical systems.

API 6D API 600 Manual Gate Valve

The api 6d api 600 manual gate valve is a high-performance isolation valve engineered for demanding pipeline applications, providing reliable on-off flow control with minimal pressure drop in oil, gas, and petrochemical systems.

API 6D & API 600 Manual Flexible Wedge Gate Valves

Designed for reliable shutoff and flow regulation in oil & gas, petrochemical, power generation, and water treatment industries.

What is API 6D?

Covers pipeline valves including gate, ball, check, and plug valves. Ensures quality standards for valves in pipeline transportation systems, guaranteeing safe and reliable performance in high-pressure environments.

What is API 600?

Specifies requirements for steel gate valves with flanged or butt-welding ends, ensuring strength, durability, and consistent performance in critical industrial operations.

Key Features
  • Flexible wedge design for tight sealing
  • Manual handwheel or gearbox operation
  • High pressure & temperature resistance
  • Leak-proof shutoff performance
  • Corrosion-resistant materials
  • Long service life with reduced maintenance
Benefits
  • Reliable sealing for critical shutoff
  • Durability in harsh environments
  • Versatile industrial applications
  • Precise manual control of flow
Applications
  • Oil & Gas Pipelines – isolation & regulation
  • Petrochemical Plants – corrosive fluid handling
  • Power Generation – steam & water systems
  • Water Treatment – purification & distribution
General Specifications
Size 2" and above
Pressure Rating Class 150 and above
Temperature Rating ASME B16.34
Applications Water, Oil, Gas
Design Standards
  • Design & Manufacture: API 600, API 6D, ASME B16.34
  • Face-to-Face: API 6D, ASME B16.10, BS EN 558
  • Connections: ASME B16.5, EN 1092, JIS 5K–20K, BW, RTJ
  • Structure: Flexible Disc, OS&Y, BB, Full Bore
Materials
Body & Bonnet ASTM A216 WCB
Disc ASTM A216 WCB + Hard Faced
Stem ASTM A182 F6A, F304, F316, XM-19, 17-4PH, Inconel 718, Monel K-500
Seat ASTM A105 + Hard Faced
Operator Handwheel or Gear
Special Materials Available upon request
Testing & Quality Control
  • Inspection Standards: API 598, API 6D
  • 100% chemical & mechanical test for each heat number
  • 100% DPT for castings, partial MT/UT, RT available if required
  • 100% hydrostatic shell & seat test, plus low-pressure air test

The API 6D API 600 Manual Gate Valve is a high-performance isolation valve engineered for demanding pipeline applications, providing reliable on-off flow control with minimal pressure drop in oil, gas, and petrochemical systems. Conforming to API 6D for pipeline valves and API 600 for steel gate valves, this Manual Gate Valve features a flexible wedge gate and bolted bonnet construction for tight sealing and durability under high-pressure conditions up to PN420 (Class 2500) and temperatures to 425°C. Ideal for transmission lines, refineries, and power plants, it ensures safe shutoff while offering superior corrosion resistance through premium materials like ASTM A216 WCB carbon steel or CF8M stainless steel.

Manufactured with precision forging or casting, the API 6D Gate Valve undergoes rigorous heat treatment and 100% non-destructive testing (RT, UT, MT, PT) to meet ASME B16.34 pressure-temperature ratings. Available in sizes from 2" to 48" (DN50 to DN1200) with flanged or butt-weld ends per ASME B16.5/B16.25, it supports OS&Y (outside screw and yoke) rising stem for clear position indication and easy maintenance. The flexible wedge design compensates for thermal expansion, preventing jamming in high-temperature services, while metal-to-metal or resilient seats ensure Class VI shutoff per API 598. Its full-bore configuration minimizes turbulence, optimizing flow efficiency in Pipeline Gate Valve applications.

The API 600 Gate Valve excels in bidirectional sealing against high differential pressures, with optional Stellite hard-facing for abrasion resistance in slurries or corrosive media. Coatings such as epoxy or 3LPE enhance external corrosion resistance, protecting against soil or atmospheric exposure in buried or offshore pipelines. Manual operation via handwheel or gear operator provides precise control, with low torque requirements supporting automation upgrades. Tensile strengths above 485 MPa and yield strengths of 250 MPa guarantee structural integrity under cyclic loading, making it suitable for API 6D-compliant pipeline transportation of natural gas, petroleum, and refined products.

Compared to ball valves, the Manual Gate Valve offers superior longevity for infrequent cycling, with 3-5 times the service life in isolation duties due to its robust wedge mechanism. It outperforms knife gates in clean fluids by reducing erosion, while slab gate variants handle dirty services effectively. Custom features like pressure-seal bonnets for high-temp steam or through-conduit designs for pigging ensure versatility. The valve's adherence to EN 1982 or MSS SP-81 standards broadens global applicability, from upstream drilling to downstream refining.

Addressing challenges like leakage in high-pressure lines, thermal distortion, and media erosion, this Corrosion Resistant Gate Valve incorporates double-block-and-bleed capabilities and secondary seals for ultimate safety. Its value-engineered design balances performance and cost, reducing operational expenses in long-term pipeline projects. Whether isolating flow in gas transmission or shutting off in petrochemical processes, the API 6D API 600 Manual Gate Valve delivers unmatched reliability, efficiency, and compliance for critical industrial operations.

FAQs

Engineered for high-pressure pipeline isolation with API-compliant design and corrosion resistance.

A Manual Gate Valve is the most common valve for water supply systems, functioning as a linear-motion isolation valve to stop or allow flow by sliding the closure element into the stream, acting like a gate for shutoff in Pipeline Gate Valve applications.

API 600 Gate Valve provides significantly more control over flow and pressure than ball valves, though it lacks immediate stop capability, making it suitable for throttling in API 6D Gate Valve systems.

Gate Valve requires considerable force to open and close, potentially limiting accessibility, and must be fully open or closed to prevent damage in Pipeline Isolation Valve operations.

Corrosion Resistant Gate Valve and parallel gate valves are the main types, with knife gate valves (parallel) featuring a sharp edge for cutting media in Industrial Gate Valve applications.

Gate Valve is bulkier than ball valves and unsuitable for tight spaces or leak-free seals, where ball valves are preferred in Pipeline Isolation Valve setups.

Operating with a closed Gate Valve can cause pressure buildup leading to rupture or explosion in Corrosion Resistant Gate Valve systems; it must be fully open or closed.

Design & Parts of a Gate Valve

Gate valves have a simple design, widely used in low pressure-drop services. Their full-port design ensures unobstructed flow and no pressure drop, while also allowing pipeline cleaning with a pigging system.

A resilient seated gate valve with a non-rising spindle consists of the following parts. The body is the largest element of the valve, with the bonnet bolted for cleaning and maintenance. The wedge slides down to press the valve seat for complete shutoff and moves upward to allow flow. Over the last century, the construction has remained consistent, with improvements in service life, sealing performance, and corrosion resistance.

Modern gate valve bodies are more compact and sleek, enabling installation in limited space conditions while maintaining durability and efficiency.

Wedge

Moves vertically to open or close, sealing against the seat for shutoff.

Valve Body

Made of ductile iron, it is the main housing that contains the fluid flow.

Seating Area

Ensures tight sealing when the wedge presses against it.

Stem (Spindle)

Transfers rotational motion to vertical movement of the wedge.

Spindle Bearing

Supports the stem to reduce wear during operation.

Bonnet

Bolted to the body for easy cleaning and maintenance access.

Packing

Provides sealing around the stem to prevent leakage.

How Do Cryogenic Valves Work?

General Standards of Valves

Comprehensive list of key international valve standards from major organizations, updated as of 2025.

Organization Standard Description
ANSI American National Standards Institute General industrial standards
API American Petroleum Institute Standards for oil and gas industry
ASME American Society of Mechanical Engineers Boiler and pressure vessel codes
BS British Standards UK national standards
GB, JB, HG China Valve Standards Chinese national and industry standards
FCI Fluid Control Institute Standards for fluid control and conditioning equipment
What is a valve?

ANSI Valve Standards

American National Standards Institute

Code ANSI Standard Name
ANSI A126 Grey Iron Castings for Valves, Flanges, and Pipe Fittings
ANSI A181 Forged or Rolled Steel Pipe Flanges, Forged Fittings, and Valves and Parts for General Service
ANSI B16.10 Face-to-Face and End-to-End Dimensions of Valves
ANSI B16.34 Valves - Flanged, Threaded, and Welding End
ANSI B16.5 Pipe Flanges and Flanged Fittings
ANSI/FCI 70-2 Control Valve Seat Leakage
ANSI B127.1 Constant-Level Oilers

API Valve Standards

American Petroleum Institute

Code API Standard Name
API 526 Flanged Steel Pressure-Relief Valves
API 527 Seat Tightness of Pressure Relief Valves
API 594 Check Valves: Flanged, Lug, Bolted Bonnet
API 595 Cast Iron Gate Valves - Flanged Bonnet
API 597 Steel Venturi Gate Valves - Flanged and Welding Ends
API 598 Valve Inspection and Testing
API 599 Steel and Ductile Iron Plug Valves
API 600 Bolted Bonnet Steel Gate Valves for Refinery Service
API 602 Compact Steel Gate Valves - Flanged, Threaded, and Welding Ends
API 603 Corrosion-Resistant Gate Valves - Flanged Ends
API 604 Ductile Iron Gate Valves - Flanged Ends
API 607 Fire Test for Quarter-Turn Valves
API 608 Metal Ball Valves - Flanged, Threaded, and Welding Ends
API 609 Butterfly Valves: Double Flanged, Lug- and Wafer-Type
API 6D Pipeline and Piping Valves
API 6FA Fire Test for Valves
API RP 574 Inspection Practices for Piping System Components
API RP 576 Inspection of Pressure-Relieving Devices

ASME Valve Standards

American Society of Mechanical Engineers

Code ASME Standard Name
ASME A105/A105M Carbon Steel Forgings for Piping Applications
ASME A181/A181M Carbon Steel Forgings, for General-Purpose Pipes
ASME A182/A182M Forged or Rolled Alloy and Stainless Steel Pipe Flanges, Forged Fittings, and Valves and Parts for High-Temperature Service
ASME A350/A350M Carbon and Low-Alloy Steel Forgings for Low-Temperature Service
ASME A694/A694M Carbon and Alloy Steel Forgings for Pipe Flanges, Fittings, Valves, and Parts for High-Pressure Transmission Service
ASME B16.5 Pipe Flanges and Flanged Fittings: NPS 1/2 Through NPS 24 Metric/Inch Standard
ASME B16.10 Face-to-Face and End-to-End Dimensions of Valves
ASME B16.11 Forged Fittings, Socket-Welding and Threaded
ASME B16.34 Valves - Flanged, Threaded, and Welding End
ASME B31.1 Power Piping
ASME B31.3 Process Piping
ASME F1508 Standard Specification for Angle Style, Pressure Relief Valves for Steam, Gas, and Liquid Services
ASME F1565 Pressure-Reducing Valves for Steam Service

BS - British Standard Valves

British Standards Institution

Code British Standard Name
BS 1212 Float Operated Valves - Automatic Valves (Including Float Valves) for Tanks, Cisterns, Hot-Water Cylinders and Feed Cisterns
BS 1414 Specification for Steel Wedge Gate Valves (Flanged and Butt-Welding Ends) for the Petroleum, Petrochemical and Allied Industries
BS 1552 Specification for Control Plug Cocks for Low Pressure Gases
BS 1868 Specification for Steel Check Valves (Flanged and Butt-Welding Ends) for the Petroleum, Petrochemical and Allied Industries
BS 1873 Specification for Steel Globe and Globe Stop and Check Valves (Flanged and Butt-Welding Ends) for the Petroleum, Petrochemical and Allied Industries
BS 1952 Specification for Copper Alloy Gate Valves for General Purposes
BS 2080 Specification for Face-to-Face, Centre-to-Face, End-to-End and Centre-to-End Dimensions for Flanged and Butt-Welding End Steel Valves for the Petroleum, Petrochemical and Allied Industries
BS 2995 Specification for Cast and Forged Steel Wedge Gate, Globe, Check and Plug Valves Screwed and Socket-Welding Sizes 1/2 in and Smaller for the Petroleum Industry
BS 3464 Specification for Cast Iron Gate Valves for General Purposes
BS 5150 Specification for Cast Iron Wedge and Double Disk Gate Valves for General Purposes
BS 5151 Specification for Cast Iron Gate (Parallel Slide) Valves for General Purposes
BS 5152 Specification for Cast Iron Globe and Globe Stop and Check Valves for General Purposes
BS 5153 Specification for Cast Iron Check Valves for General Purposes
BS 5154 Specification for Copper Alloy Globe, Globe Stop and Check, Check and Gate Valves for General Purposes
BS 5155 Specification for Butterfly Valves for General Purposes
BS 5156 Specification for Screw-Down Diaphragm Valves for General Purposes
BS 5157 Specification for Steel Gate (Parallel Slide) Valves for General Purposes
BS 5159 Specification for Cast Iron and Carbon Steel Ball Valves for General Purposes
BS 5160 Specification for Steel Globe Valves, Globe Stop Valves, Stop and Check Valves and Lift Type Check Valves
BS 5351 Specification for Steel Ball Valves for Petroleum, Petrochemical and Allied Industries
BS EN 12266-1 Industrial Valves - Testing of Metallic Valves Part 1: Pressure Tests - Test Procedures

China and International Valve Standards (GB)

China National Standards

Code GB Standard Name Adopting Standard
GB 12220 General Valve - Marking ISO 5209
GB 12221 Flanged Ends Metal Valve - Face-to-Face Dimensions ISO 5752
GB 12222 Multi-Turn Valve - The Connection of the Driving Device ISO 5210/1-3
GB 12223 Part-Turn Valve - The Connection of the Driving Device ISO 5211/1-3
GB 12224 Steel Valve - General Requirements ANSI B16.34
GB 12225 General Valve - Copper Alloy Casting Ware Technology Requirements ASTM B584
GB 12226 General Valve - Gray Cast Iron Technology Requirements ISO 185, BS 1452
GB 12228 General Valve - Carbon Forging Steel Technology Requirements ASTM A105, A181
GB 12229 General Valve - Carbon Casting Steel Technology Requirements ASTM A703
GB 12230 General Valve - Austenitic Casting Steel Technology Requirements ASTM A351
GB 12232 General Valve - Flanged Ends Iron Gate Valve ISO 5996-1982, API 595
GB 12233 General Valve - Iron Gate Valve and Lift Check Valve BS 5152, 5153
GB 12234 General Valve - Flanged and Butt-Welding Ends Copper Gate Valve API 600
GB 12237 General Valve - Flanged and Butt-Welding Ends Steel Ball Valve ISO 7121, API 607
GB 12238 General Valve - Flanged and Wafer Ends Butterfly Valve BS 5155
GB 12239 General Valve - Diaphragm Valve BS 5156, NFE 29
GB 12240 General Valve - Iron Plug Valve API 593
GB 12241 Safety Valve - General Requirements ISO 4126
GB 12242 Safety Valve - Characteristic Testing Solution ANSI/ASME PTC 25.3
GB 12243 Direct Spring-Loaded Safety Valve JIS B 8210
GB 12244 Pressure Reducing Valve - General Requirements JIS B 8372, B8410
GB 12245 Pressure Reducing Valve - Characteristic Testing Solution JIS B 8372, B8410
GB 12246 Pilot Operated Pressure Reducing Valve JIS B 8372, DSS 405
GB 12247 Steam Trap Valve - Classification ISO 6704
GB 12248 Steam Trap Valve - Technology Terms ISO 6552
GB 12249 Steam Trap Valve - Marking ISO 6553
GB 12250 Steam Trap Valve - Face-to-Face Dimensions ISO 6554
GB 12251 Steam Trap Valve - Testing Solution ISO 6948, 7841, 7842
GB/T 13927 General Valve - Pressure Testing ISO 5208
JB/T 6899-93 Valve Fire-Proof Test ISO 10497
JB/T 7927-95 Valve Casting Steelware Out-Form Quality Requirements MSS SP-55
ZBJ 16006-90 Inspection and Testing of Valve API 598
Code GB Standard Name
GB 12227 General Valve - Ductile Cast Iron Technology Requirements
GB 12235 General Valve - Flanged Steel Stop and Lift Check Valve
GB 12236 General Valve - Steel Swing Check Valve
GB/T 13932 General Valve - Iron Swing Check Valve
GB/T 15185 Iron and Copper Ball Valve
GB/T 15188.1 Valve Face-to-Face Dimensions - Butt-Welding Ends Valve
GB/T 15188.2 Valve Face-to-Face Dimensions - Wafer Ends Valve
GB/T 15188.3 Valve Face-to-Face Dimensions - Female Screw-Down Valve
GB/T 15188.4 Valve Face-to-Face Dimensions - Male Screw-Down Valve
JB 93 Handle
JB/T 450 PN16-32.0 MPa Forging Angle Type High-Pressure Valve, Fastener, and Technology Requirements
JB/T 7745-95 Pipeline Ball Valve
JB/T 8527-97 Metal Sealing Butterfly Valve
JB/T 8473-96 Instrument Valve Series
ZBJ 16004-88 Reducing Valve Type and Basing Coefficient
ZBJ 16007-90 Steam Trap Valve Technology Terms
ZBJ 16009-90 Valve Pneumatic Actuator Technology Terms

Fluid Control Institute (FCI) Standards

Standards for fluid control and conditioning equipment

The Fluid Control Institute (FCI) provides standards to assist in understanding and using control valves, solenoid valves, and regulators.

Code FCI Standard Name
ANSI/FCI 70-2 Control Valve Seat Leakage
ANSI/FCI 70-3 Control Valve Aerodynamic Noise Prediction
ANSI/FCI 91-1 Qualification of Control Valve Stem Seals
ANSI/FCI 85-1 Method of Determining the Thermal Expansion of a Filled Thermal System
FCI 68-2 Procedure in Rating Flow and Pressure Characteristics of Solenoid Valves for Liquid Service
FCI 75-1 Test Conditions and Procedures for Measuring Electrical Characteristics of Solenoid Valves
FCI 82-1 Recommended Methods for Testing and Classifying the Water Hammer Characteristics of Electrically Operated Valves
ANSI/FCI 69-1 Pressure Ratings of Traps

Industrial Applications

Oil & Gas

Upstream, midstream, and downstream operations, including drilling, refining, and transportation.

Chemical Processing

Handling corrosive and hazardous chemicals in various chemical plants.

Power Generation

Steam, water, and fuel systems in thermal, nuclear, and hydroelectric plants.

Water Treatment

Municipal water supply, wastewater treatment, and industrial water management.

HVAC

Heating, ventilation, and air conditioning systems in commercial and industrial buildings.

Pharmaceutical & Food

Sterile and hygienic applications, precise flow control in sensitive industries.

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