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API 6D API 600 Manual Solid Wedge Gate Valve

API 6D API 600 Manual Solid Wedge Gate Valve

The api 6d api 600 manual solid wedge gate valve delivers exceptional on-off isolation with a solid wedge for tight sealing in high-pressure oil, gas, and petrochemical pipelines up to pn420 and 425°c.

API 6D API 600 Manual Solid Wedge Gate Valve

The api 6d api 600 manual solid wedge gate valve delivers exceptional on-off isolation with a solid wedge for tight sealing in high-pressure oil, gas, and petrochemical pipelines up to pn420 and 425°c.

API 6D & API 600 Manual Solid Wedge Gate Valves

Reliable solution for fluid regulation in oil & gas, petrochemical, power generation, and water treatment pipelines. Featuring solid wedge design, high-pressure resistance, and cost-effective maintenance.

What is API 6D?

Covers pipeline valves including gate, ball, check, and plug valves used in pipeline transportation systems. Ensures performance, safety, and durability under demanding conditions.

What is API 600?

Specifies requirements for steel gate valves with flanged or butt-welding ends, designed for industrial service, ensuring long service life and reliable sealing.

Key Features
  • Solid wedge design for robust sealing
  • Manual operation with handwheel or gearbox
  • High pressure & temperature resistance
  • Leak-free shutoff with system integrity
  • Corrosion-resistant materials
  • Minimal pressure drop with straight-through flow
Benefits
  • Durability in harsh environments
  • Reliable shutoff for critical isolation
  • Excellent corrosion resistance
  • Cost-effective maintenance with long service life
  • Precise manual control of fluid flow
Applications
  • Oil & Gas Pipelines – isolation & regulation under high pressure
  • Petrochemical Industry – handles aggressive chemicals & fluids
  • Power Generation – for steam, water, and gas systems
  • Water Treatment – efficient flow control in treatment systems
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: Solid 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 Solid Wedge Gate Valve is a high-performance isolation valve engineered for critical pipeline applications, providing robust on-off flow control with a solid wedge design that ensures tight, bidirectional sealing under extreme pressures and temperatures. Conforming to API 6D for pipeline valves and API 600 for bolted bonnet steel gate valves, this Manual Solid Wedge Valve is ideal for transporting natural gas, petroleum, and refined products in refineries, transmission lines, and petrochemical facilities. Constructed from forged ASTM A105 carbon steel or A182 F316 stainless steel, it offers superior corrosion resistance through epoxy or 3LPE coatings, making it suitable for harsh environments like offshore platforms or sour gas service.

Manufactured via precision forging and heat treatment, the API 6D Gate Valve features an outside screw and yoke (OS&Y) rising stem for clear position indication and easy maintenance, with a bolted bonnet (BB) for pressure containment up to Class 2500 (PN420). Available in sizes from 2" to 48" (DN50 to DN1200) with flanged or butt-weld ends per ASME B16.5/B16.25, it supports temperatures from -29°C to 425°C per ASME B16.34. The solid wedge, often hard-faced with Stellite #6, provides rigidity and wear resistance against abrasive media like slurries, ensuring Class VI shutoff per API 598. Rigorous testing, including 100% RT/UT and hydrostatic shell tests at 1.5x rated pressure, confirms tensile strengths above 485 MPa, guaranteeing integrity under cyclic loading and thermal cycling.

The API 600 Gate Valve excels in full-bore flow with minimal pressure drop (Cv up to 20,000), optimizing throughput in long-distance pipelines while the manual handwheel or gear operator enables precise control with low torque. Its Corrosion Resistant Gate Valve properties resist pitting from chlorides or H2S, with optional NACE MR0175 compliance for sour service. The through-conduit design facilitates pigging for pipeline cleaning, reducing maintenance needs in Pipeline Isolation Valve applications. Face-to-face dimensions align with API 6D, ASME B16.10, and BS EN 558, ensuring seamless integration into existing systems.

In comparison to slab or expanding gate valves, the Manual Solid Wedge Valve offers simpler construction and lower cost for clean service, with 3-5 times longer life due to its rigid wedge that minimizes distortion under high loads. It outperforms knife gates in high-pressure scenarios by providing better sealing integrity, while flexible wedge variants handle thermal expansion effectively. Custom options like pressure-seal bonnets for steam service or electric actuators for automation enhance versatility across oil & gas transmission, power generation, and water management.

Addressing challenges like leakage in high-differential pressures, erosion in abrasive flows, and compliance in pipeline transport, this API 6D API 600 Manual Solid Wedge Gate Valve incorporates double-block-and-bleed functionality and secondary seals for ultimate safety. Its value-engineered design balances performance and affordability, reducing lifecycle costs in long-term projects. Whether isolating flow in gas gathering lines or shutting off in refinery units, it delivers reliable, low-maintenance Pipeline Isolation Valve solutions for global industrial demands.

Chemical Composition and Mechanical Properties

Below are typical specifications for key materials in the API 6D API 600 Manual Solid Wedge Gate Valve, focusing on ASTM A216 WCB Carbon Steel for the body, ASTM A351 CF8M Stainless Steel for trim, and Stellite #6 for hard-facing overlays. Data aligns with ASTM A216, A351, and API standards.

Material Chemical Composition (%) Mechanical Properties
ASTM A216 WCB Carbon Steel - Body
  • C: 0.30 max
  • Mn: 0.60-1.20
  • P: ≤0.035
  • S: ≤0.035
  • Si: 0.15-0.30
  • Mo: 0.15 max
  • Fe: Balance
  • Tensile Strength: ≥485 MPa
  • Yield Strength: ≥250 MPa
  • Elongation: ≥22%
  • Hardness: ≤197 HB
ASTM A351 CF8M Stainless Steel - Trim/Wedge
  • C: ≤0.08
  • Cr: 18.0-21.0
  • Ni: 9.0-12.0
  • Mo: 2.0-3.0
  • Mn: ≤1.5
  • Si: ≤1.0
  • P: ≤0.04
  • S: ≤0.03
  • Tensile Strength: ≥515 MPa
  • Yield Strength: ≥205 MPa
  • Elongation: ≥35%
  • Hardness: ≤215 HB
Stellite #6 - Hard-Facing Overlay
  • C: 0.9-1.4
  • Cr: 27.0-32.0
  • W: 3.5-5.5
  • Co: Balance
  • Si: ≤2.0
  • Mn: ≤1.0
  • Fe: ≤3.0
  • Tensile Strength: ≥1000 MPa
  • Yield Strength: ≥600 MPa
  • Elongation: ≥1%
  • Hardness: 36-45 HRC

FAQs

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

A Manual Solid Wedge Valve is a linear-motion isolation valve used in water, oil, and gas systems to stop or allow flow, with its solid wedge gate sliding into the stream for reliable shutoff in Pipeline Isolation Valve applications.

API 600 Gate Valve offers finer control over flow and pressure compared to ball valves, ideal for throttling in API 6D Gate Valve systems, though it lacks instant shutoff capability.

Manual Solid Wedge Valve requires significant force to open or close, limiting accessibility, and must be fully open or closed to avoid 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 API 6D Gate Valve applications.

API 600 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 machinery with a closed Manual Solid Wedge Valve risks excessive pressure buildup, potentially causing 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.

What is a valve?

General Standards of Valves

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

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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