API 600 Class 300 WCB Cast Steel ANSI Flanged Manual Globe Valve

Product Overview

The API 600 Class 300 WCB Cast Steel ANSI Flanged Manual Globe Valve is a standard industrial throttling and isolation valve strictly designed and manufactured in accordance with API 600, ASME B16.34 and ANSI American industrial standards. This Class 300 medium-high pressure globe valve adopts premium ASTM A216 WCB cast carbon steel as the valve body material, matched with standard ANSI flanged connection and manual handwheel operating structure, featuring stable pressure resistance, excellent high-temperature performance and precise fluid throttling capability.

Different from low-pressure valves, this Class 300 globe valve adopts a thickened integral casting structure, which can stably cope with medium-high pressure and high-temperature cyclic working conditions. The manual handwheel operation realizes flexible and reliable opening, closing and flow regulation without complex driving equipment, reducing installation and maintenance costs. With standard OS&Y rising stem design and precision lapped sealing pair, it achieves excellent zero-leakage performance. Widely used in petrochemical refining, oil and gas transmission, power plant steam systems and industrial process pipelines, it is a cost-effective and durable flow control solution for medium and high-pressure industrial pipelines.

Key Features & Advantages

1. Strict API 600 & ANSI Standard Compliance

Manufactured and tested fully complying with API 600 steel valve specifications, ASME B16.34 pressure temperature rating, ASME B16.10 face-to-face dimension and ASME B16.5 flange standards. All technical parameters and inspection procedures meet international industrial project acceptance requirements, fully compatible with global ANSI standard pipeline systems and suitable for overseas engineering bidding and matching.

2. Class 300 Medium-High Pressure Resistance

Optimized for Class 300 (PN50) medium-high pressure working conditions, the valve body adopts thickened wall thickness and scientific pressure-bearing structure. It effectively resists long-term medium impact and cyclic load operation, avoids structural deformation and sealing failure, and maintains stable and safe operation of industrial medium-high pressure pipelines for a long time.

3. High-Quality WCB Cast Steel Body

Adopts ASTM A216 WCB cast carbon steel, a mature and reliable pressure vessel steel material. It has excellent high-temperature mechanical stability, strong anti-scouring performance and good structural toughness, with a working temperature range of -29℃ to 425℃. The integral cast body has no trachoma, porosity and other defects, ensuring long-term stable and durable operation.

4. Standard ANSI Flanged Connection

Equipped with ANSI B16.5 standard raised face (RF) flange, with precisely processed sealing surface and unified installation dimensions. The flanged structure is easy to install, position and disassemble, with strong vibration resistance and good sealing stability, suitable for fixed laying and regular maintenance of industrial medium-high pressure pipelines.

5. Manual Handwheel Flexible Operation

Adopts classic manual handwheel driving mode, with simple structure, convenient operation and high reliability. It can accurately control the opening degree of the valve to realize linear throttling and pressure regulation, no need for electric or pneumatic auxiliary equipment, low failure rate and low later operation and maintenance cost.

6. OS&Y Rising Stem & Zero Leakage Performance

Outside Screw and Yoke rising stem structure isolates the thread from the medium to prevent corrosion and ensure flexible switching. The valve disc and seat are precisely lapped and can be overlaid with Stellite hard alloy as required. All products pass strict API 598 hydrostatic and sealing tests to achieve bubble-tight zero leakage, effectively avoiding medium loss and pipeline safety hazards.

Technical Specifications

Applications

•Petrochemical & Refinery: Medium-high pressure process pipelines, oil refining circulation systems, chemical medium throttling and isolation pipelines

•Oil & Gas Industry: Oilfield gathering and transportation pipelines, medium-pressure gas transmission pipelines, wellhead auxiliary process systems

•Power Generation: Thermal power plant medium-pressure steam pipelines, boiler auxiliary water supply systems, heating circulation pipelines

•Industrial Manufacturing: Factory process fluid pipelines, medium-pressure water and gas delivery systems, pipeline pressure regulation equipment

•General Industrial Service: Medium-high pressure pipeline safety isolation, precise flow control and daily cut-off systems

Why Choose Our API 600 Class 300 WCB Manual Globe Valve?

✅ Standard API 600 Certification — Fully compliant with API 600 and ANSI international standards, compatible with global standard pipeline systems, suitable for various overseas industrial projects.

✅ Class 300 Medium-High Pressure Stability — Thick-wall WCB cast steel body, stable operation under long-term Class 300 medium-high pressure and high-temperature working conditions.

✅ Durable WCB Cast Steel Material — Excellent high-temperature resistance and scouring resistance, strong structural stability, long service life for industrial cyclic operation.

✅ Simple Manual Operation — Handwheel manual drive, simple structure, flexible opening and closing, no extra power equipment, low failure rate and maintenance cost.

✅ ANSI Flanged & Zero Leakage — Standard ANSI flange for easy installation, API 598 certified bubble-tight zero leakage, ensuring pipeline operation safety.

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 treatment + Standard 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 manual flanged globe valves.

What Is an API Globe Valve

An API Globe Valve is a linear motion valve designed to start, stop, and regulate the flow of liquids, gases, steam, and other process media. It features a movable disc that travels toward or away from a seat to control the flow path with high accuracy. Manufactured according to API requirements, the valve offers dependable sealing and mechanical strength. It is commonly used in oil and gas, petrochemical, power generation, and chemical processing systems where precise flow control is required.

Why the API Globe Valve Matters

An API Globe Valve is important because it provides accurate throttling capability and reliable shutoff under demanding operating conditions. API standards help ensure product quality, material consistency, and operational safety. The valve helps maintain stable process conditions and protects equipment from sudden flow variations. Its strong construction and durable internal components make it suitable for applications involving elevated pressure, temperature changes, and continuous service requirements.

Common Product Types by API Globe Valve

Common product types include standard pattern globe valves, angle globe valves, and Y pattern globe valves. Different bonnet configurations such as bolted bonnet, welded bonnet, and pressure seal bonnet are available for various service conditions. Manual, electric, pneumatic, and bevel gear operated versions can be selected according to control requirements. A wide range of body materials and trim options are available to accommodate corrosive media and severe operating environments.

Key Advantages of API Globe Valve

The valve offers excellent flow regulation, dependable sealing performance, and strong resistance to pressure and temperature fluctuations. Its internal design allows precise control and smooth operation. API compliant construction enhances reliability and service life. Various actuation methods provide flexibility for different industrial systems. Durable seating surfaces and robust body materials contribute to reduced maintenance requirements and long term operational stability.

API Globe Valve Machine Structure and Core Stations

Manufacturing begins with casting or forging the body, bonnet, disc, and stem from selected materials. Core stations include heat treatment and precision CNC machining of seat surfaces, stem threads, guide areas, and connection ends. Hardfacing processes may be applied to improve wear resistance. Assembly stations install the disc, stem, packing, bonnet, and operating mechanism. Final operations include pressure testing, surface treatment, cleaning, marking, and packaging to ensure accurate dimensions and reliable sealing performance.