Product Overview
The API 600 Class 300 WCB Cast Steel ANSI Flanged Manual Gate Valve is a heavy-duty industrial isolation valve manufactured in strict accordance with API 600, ASME B16.34, ASME B16.5 and ASME B16.10 international standards. Designed for Class 300 medium-high pressure working conditions, this ANSI standard gate valve adopts premium ASTM A216 WCB cast steel body, featuring high structural rigidity, excellent high-temperature resistance and stable pressure-bearing performance.
Equipped with standard ANSI RF flanged connection and classic OS&Y rising stem solid wedge structure, this manual gate valve realizes full flow passage opening and bidirectional tight shutoff. Different from globe valves, it is specially designed for pipeline full open/full closed isolation, with no medium resistance in fully open state, effectively reducing pipeline flow loss. The manual handwheel operation is simple and reliable, without additional power equipment. With precision lapped sealing pairs and optional Stellite hard alloy overlay, the valve achieves API 598 certified zero leakage, serving as an ideal safety isolation solution for medium-high pressure industrial pipelines.
Key Features & Advantages
1. Full API 600 & ANSI Standard Compliance
This industrial gate valve is strictly designed, manufactured and tested per API 600 steel gate valve standards, matched with ASME B16.34 pressure-temperature rating, B16.10 face-to-face dimension and B16.5 flange standards. All technical indicators comply with international industrial and engineering acceptance criteria, fully compatible with global ANSI standard pipeline systems, supporting overseas project bidding, matching and long-term supporting.
2. Class 300 Medium-High Pressure Bearing Capacity
Optimized for Class 300 (PN50) medium-high pressure working scenarios, the valve adopts thickened integral cast steel wall and scientific pressure-bearing structure. It can stably resist long-term medium impact and cyclic pressure load, effectively avoiding valve body deformation, sealing failure and pipeline leakage risks, ensuring long-term safe and stable operation of industrial pipelines.
3. Premium WCB Cast Steel Body
Adopts ASTM A216 WCB carbon cast steel, a mainstream high-quality material for industrial pressure valves. It features excellent high-temperature mechanical stability, strong medium scouring resistance and good structural toughness, with a working temperature range of -29℃ to 425℃. The integral casting process eliminates pores, trachoma and structural defects, guaranteeing durable industrial cyclic operation.
4. Standard ANSI Flanged Connection
Comes with ANSI B16.5 standard raised face flange, with high-precision processed sealing surface and unified installation dimensions. The flanged structure enables quick positioning, convenient installation and disassembly, and facilitates daily inspection and maintenance. It has outstanding vibration resistance and sealing stability, suitable for fixed laying of long-term operating medium-high pressure pipelines.
5. OS&Y Rising Stem Solid Wedge Structure
Adopts Outside Screw and Yoke rising stem design, which isolates the valve stem thread from flowing medium to prevent corrosion, dust accumulation and thread abrasion. The exposed stem can clearly display the valve opening state. The solid wedge structure ensures precise fitting with the valve seat, realizing stable and reliable bidirectional sealing.
6. Manual Drive & Zero Leakage Performance
Classic handwheel manual operation, simple structure, high flexibility and low failure rate, no need for electric, pneumatic or hydraulic driving devices, greatly reducing equipment and maintenance costs. The valve gate and seat can be overlaid with Stellite hard alloy for enhanced wear and high-temperature resistance. All products pass strict API 598 hydrostatic and sealing tests to achieve bubble-tight zero leakage.
Technical Specifications
| Item | Specification |
| Product Name | API 600 Class 300 WCB Cast Steel ANSI Flanged Manual Gate Valve |
| Design Standard | API 600, ASME B16.34, ASME B16.10, ASME B16.5, API 598 |
| Pressure Class | Class 300 (PN50) |
| Body Material | ASTM A216 WCB Cast Carbon Steel |
| Trim Material | 13Cr, Stellite 6 / Stellite 12 Hard Alloy (Optional) |
| Connection Type | ANSI B16.5 RF Flanged |
| Structure Type | OS&Y Rising Stem, Solid Wedge Gate Valve |
| Operation Mode | Manual Handwheel |
| Size Range | DN15 ~ DN300 (NPS 1/2" ~ 12") |
| Working Temperature | -29℃ ~ 425℃ |
| Test Standard | API 598 Hydrostatic Test & Zero Leakage Test |
| Applicable Media | Steam, Crude Oil, Natural Gas, Process Water, Industrial Chemical Fluid |
Applications
• Oil & Gas Industry: Oilfield gathering and transportation pipelines, medium-pressure gas transmission main pipelines, wellhead safety isolation systems
• Petrochemical & Refinery: Refinery process pipelines, chemical medium delivery pipelines, reaction system safety cut-off equipment
• Power Generation: Thermal power plant medium-pressure steam pipelines, boiler water supply systems, heating pipeline isolation devices
• Chemical Industry: Medium-pressure chemical reaction pipelines, industrial fluid delivery systems, pipeline safety switch equipment
• General Industrial Facilities: Factory medium-pressure water and gas pipelines, public engineering pipeline isolation and daily cut-off systems
Why Choose Our API 600 Class 300 WCB Gate Valve?
✅ Authentic API 600 Standard — Fully compliant with international API 600 and ANSI standards, compatible with global standard pipeline systems, meeting overseas engineering project acceptance standards.
✅ Class 300 Medium-High Pressure Resistance — Thick-wall WCB cast steel body, stable structural performance, adaptable to long-term medium-high pressure and high-temperature industrial working conditions.
✅ Durable WCB Cast Steel Quality — Excellent high-temperature stability and scouring resistance, strong impact resistance, long service life for continuous industrial operation.
✅ Zero Flow Resistance & Isolation Function — Full bore flow passage design, no medium loss when fully open, bidirectional zero leakage shutoff when fully closed, ideal for pipeline isolation.
✅ Cost-Effective Manual Operation — Handwheel manual drive, simple structure, convenient operation, low failure rate, no extra power consumption, low later maintenance cost.
Order & Certification Information
MOQ: 1 Unit
Lead Time: 15-30 working days for standard sizes
Certificates: EN10204 3.1 Material Certificate, API 598 Test Report, ISO 9001 Quality Certificate
Packing: Anti-rust oil treatment + Reinforced export wooden case
Warranty: 18-month quality warranty and lifelong technical support
Contact Us for customized sizes, trim materials and bulk quotation of API 600 Class 300 WCB ANSI flanged manual gate valves.
What Is a Flanged API Power Station Gate Valve
A Flanged API Power Station Gate Valve is a heavy duty isolation valve specially developed for demanding power generation applications. It controls the passage of steam, water, and process fluids by raising or lowering a gate inside the valve body. Designed according to API requirements, the valve combines strong structural integrity with reliable sealing performance. Flanged connections provide convenient installation and maintenance, making the valve suitable for boilers, main steam lines, and auxiliary systems operating under severe conditions.
Why the Flanged API Power Station Gate Valve Matters
The Flanged API Power Station Gate Valve is essential for maintaining the reliability and safety of power station systems. It allows critical sections of piping to be isolated during maintenance and helps prevent unwanted leakage during operation. Its robust construction enables stable performance under elevated temperatures and demanding pressure conditions. Reliable shutoff capability protects turbines, pumps, and other key equipment, contributing to efficient plant operation and long term system stability.
Common Product Types by Flanged API Power Station Gate Valve
Several types of Flanged API Power Station Gate Valves are available to meet different process requirements. Flexible wedge designs are widely used because they provide excellent sealing performance under changing temperatures. Solid wedge valves are suitable for stable service conditions, while pressure seal configurations are preferred for severe applications. Rising stem and non rising stem constructions are both available. Manual handwheel, electric actuator, and bevel gear operated versions can be selected according to operational needs.
Key Advantages of Flanged API Power Station Gate Valve
The Flanged API Power Station Gate Valve offers dependable shutoff performance and excellent resistance to thermal and mechanical stress. Its full bore structure allows smooth media flow with minimal resistance when fully open. Durable body materials and reinforced sealing surfaces help extend service life and reduce maintenance demands. Flanged ends simplify installation and replacement procedures, while multiple actuation options provide flexibility for modern industrial control systems.
Flanged API Power Station Gate Valve Machine Structure and Core Stations
The manufacturing process starts with forging or casting major components such as the body, bonnet, gate, and stem using materials selected for high temperature service. Core stations include heat treatment, precision machining, and surface hardfacing to improve wear resistance and sealing quality. Assembly stations install the gate, stem, packing system, bonnet, and drive mechanism. Final operations involve pressure testing, sealing verification, surface finishing, cleaning, identification marking, and packaging to ensure consistent quality and reliable performance.
