GB Stainless Steel Flange Globe Valves

GB Stainless Steel Flange Globe Valves are core regulating and shut-off devices for industrial piping systems.They are designed and manufactured in strict compliance with Chinese national standards, fully meeting authoritative GB standards including GB/T 12235, balancing regulation accuracy and sealing reliability.

The valve realizes medium on-off control and precise flow regulation by driving the disc up and down via the valve stem.Adopting highly corrosion-resistant stainless steel and standardized flanged connection structure, it features easy installation, simple maintenance, excellent sealing performance and stable operation.

Widely used in chemical, power, pharmaceutical, water treatment, food processing and other industries with high safety and reliability requirements, it is a key valve equipment to ensure stable and efficient operation of piping systems.

Technical Parameters

Component Materials

Core Advantages

Full GB Standard Compliance

Design, manufacturing and testing strictly follow GB/T 12235, GB/T 12224 and other national standards.Each valve passes GB pressure test, fully compatible with domestic industrial GB piping systems.

Excellent Sealing Performance

Supports metal hard seal and PTFE soft seal.Metal seal for high pressure, high temperature and particle-containing media;Soft seal for zero leakage. Both meet GB/T 13927.

Convenient Flanged Connection

Standard RF, MFM and TG flanges conform to GB/T 9113.Easy installation and disassembly for various sealing requirements.

Wide Material & Actuation Range

Body material: 304/316/316L for different corrosion levels.Actuation: manual, electric, pneumatic, bevel gear for flexible operation.

Low Maintenance Cost

Outside Screw & Yoke (OS&Y) structure for clear status observation and easy maintenance.Standard GB parts for convenient replacement and low failure rate.

Applications

GB Stainless Steel Flange Globe Valves are designed for GB-compliant general service with high safety and reliability demands:

● Chemical industry: process and corrosive medium pipelines

● Power industry: steam and cooling water pipelines

● Pharmaceutical industry: clean medium transportation

● Water treatment: water supply and sewage pipelines

● Food processing: food-grade medium pipelines

Suitable for pressure class PN10 ~ PN100 and size DN10 ~ DN400.

Selection Guidelines

Pressure & Temperature

Select material and seal per GB/T 12224 to avoid over pressure / over temperature.

Material by Corrosiveness

General medium: 304 Medium corrosion: 316 Severe corrosion: 316L

Seal & Flange

High pressure / high temperature / particles: metal seal + MFM / TG flange Clean / low pressure: PTFE soft seal + RF flange

Structure

Outdoor / observation needed: OS&Y (rising stem)Narrow space: NRS (non-rising stem)

Actuation

Local operation: manual Remote / automatic: electric / pneumatic (explosion-proof per GB 3836.1)

Design & Manufacturing Standards

● Valve Design: GB/T 12235

● Face-to-Face: GB/T 12221

● Flange: GB/T 9113, GB/T 9124

● Pressure-Temperature Rating: GB/T 12224

● Testing: GB/T 13927

● Material: GB/T 1220, GB/T 3098.1/2

● Installation: GB 50235

Installation & Maintenance

Before Installation Verify model, pressure, material and seal meet GB standards and service conditions.Check body and flange faces for damage or impurities.

Installation

Install in marked flow direction: low inlet, high outlet.Tighten bolts evenly per GB 50235.

Operation

Operate slowly and smoothly.For electric valves, confirm compliance with GB 3836.1 if required.

Routine Maintenance

Inspect flange and stem packing regularly.Clean internal impurities to prevent disc jamming.

Long-Term Maintenance

Check and refinish or replace worn seat/disc surfaces using GB-compliant parts.Test before restarting after long shutdown.

GB Stainless Steel Flange Globe Valves are built around full national standard compliance, strictly following GB/T 12235 and other authoritative standards.With corrosion-resistant stainless steel and standardized flanged connections, they feature reliable sealing, easy operation, simple maintenance and high versatility.

Suitable for PN10 ~ PN100, DN10 ~ DN400, they cover chemical, power, pharmaceutical and many other industries, meeting both general regulation and shut-off demands.With GB-level quality ensuring safe and stable pipeline operation, easy selection and low maintenance cost, they are the preferred GB-compliant valves for domestic industrial piping systems.