Stainless Steel Forged Self-sealing Globe Valves

Core Advantages

Stainless Steel Forged Self-Sealing Globe Valves break through the sealing pain points of traditional high-pressure valves.With self-sealing structure + integral forged steel quality as the core, they are specially designed for high-pressure, high-temperature and highly corrosive service at PN100 and above, perfectly solving the leakage problem of traditional bolted sealing under high pressure.

Key Advantages

More Reliable Self-Sealing Structure

Bonnet adopts self-sealing design. The seal is automatically compressed by system medium pressure — the higher the pressure, the better the sealing.No extra bolt compression needed, completely eliminating leakage risks under high pressure.Suitable for full high-pressure range: PN100~PN320, Class600~2500.

Excellent Integral Forged Steel Quality

Body is integrally forged, free of blowholes and porosity, with uniform dense material, high mechanical strength and strong impact resistance.With 304/316/316L stainless steel, it provides outstanding corrosion resistance and greatly extended service life.

Strong Multi-Condition Adaptability

Sealing type can be flexibly selected based on temperature and medium.Disc and seat adopt metal hard seal (hard alloy / Stellite hardfacing), suitable for particle-containing, high-wear, highly corrosive and complex high-pressure media.Working temperature: -40℃ ~ +550℃.

Flexible Multiple Actuation Options

Manual, electric, pneumatic and bevel gear drive.Manual for small/medium bore and low-frequency operation;Explosion-proof electric/pneumatic for remote control;Bevel gear for high-pressure large bore to reduce operating torque.

Guaranteed Compliance

Designed and manufactured in strict accordance with domestic and international high-pressure forged steel valve standards.Each valve passes high-pressure air tightness test, self-sealing special test and multiple inspections.Quality is traceable and meets procurement standards for petrochemical, power station and other high-pressure industries.

Technical Parameters

Component Materials

Product Overview

Stainless Steel Forged Self-Sealing Globe Valves are high-precision shut-off control valves designed specifically for high-pressure service.They combine integral forging technology and self-sealing structure, consisting of corrosion-resistant forged stainless steel body, self-sealing bonnet, disc assembly and actuation mechanism.

The valve controls flow by lifting the disc via the valve stem.The core advantage is the self-sealing system: the sealing ring is automatically compressed by medium pressure, so sealing performance improves as pressure increases, fundamentally solving the industry pain point of easy leakage in traditional bolted sealing under high pressure.

With dense forged structure and stainless steel corrosion resistance, the valves feature high pressure resistance, high temperature resistance, corrosion resistance and long service life.They are widely used in petrochemical, natural gas, power stations and high-pressure chemical plants, serving as key components for safe and stable operation of high-pressure pipelines.

Applications

Stainless Steel Forged Self-Sealing Globe Valves are designed for high pressure (PN100+), high temperature and strong corrosion service, ideal for applications requiring extremely high sealing reliability and material strength: ● Petrochemical industry: high-pressure chemical reagent and oil pipelines

● Natural gas high-pressure transmission systems

● Power station high-pressure steam pipelines

● High-pressure chemical reaction equipment

● LPG high-pressure storage and transmission pipelines

Especially suitable for ultra-high pressure (PN320 / Class 1500+), high temperature (>450℃) and strong corrosive medium service.

Selection Guidelines

Material by Pressure High pressure (PN100~160): 304/316 forged steel Ultra-high pressure (PN320 / Class 1500+): 316L or special stainless steel

Self-Sealing Ring by Temperature

450℃: Inconel metal seal ring≤450℃: reinforced flexible graphite ring Strong corrosion: 316L seal ring

Disc/Seat by Medium

Particle & high wear: hard alloy hardfacing Clean medium: Stellite hardfacing

Actuation by Operation

Small/medium bore: manual Remote control: explosion-proof electric/pneumatic Large bore (≥DN80): bevel gear

Flange Face by Pressure

PN100~160: RF + spiral wound gasket PN320 / Class 1500+: RJ face + RJ gasket

Design & Manufacturing Standards

● Valve Design: GB/T 12235, API 602

● Face-to-Face: GB/T 12221, ANSI/ASME B16.10

● Flange: GB/T 9113, ANSI/ASME B16.5

● Pressure-Temperature: GB/T 12224, ANSI/ASME B16.34

● Testing: GB/T 13927, API 598, UT/MT/PT, self-sealing test, high-pressure air tightness test

● Material: GB/T 1220, ASTM A182, GB/T 13401

Installation & Maintenance

Before Installation

Verify model, pressure, material and self-sealing type.Check body and sealing ring for damage or impurities.

Installation

Install in marked flow direction: low inlet, high outlet.Tighten flange bolts evenly to avoid uneven stress.

Operation

Operate slowly and smoothly to avoid damage to stem or self-sealing structure.For electric/pneumatic valves, perform step-by-step pressure test.

Routine Maintenance

Monitor bonnet sealing. Minor leakage can be relieved by lightly tightening bonnet bolts.Replace self-sealing ring if leakage continues.

Long-Term Maintenance

Conduct regular UT/MT non-destructive testing.Repair or replace disc/seat sealing surfaces if regulation accuracy declines.

Restart After Long Shutdown

Check for smooth operation manually.Perform high-pressure air tightness test before commissioning.

Stainless Steel Forged Self-Sealing Globe Valves feature a self-sealing structure as the core highlight, matched with integral forged steel and corrosion-resistant stainless steel.They completely solve valve leakage under high pressure, covering PN100~PN320 full high-pressure range, with advantages of high pressure resistance, high temperature resistance, corrosion resistance and easy operation.

Manufactured in accordance with international high-pressure standards with traceable quality, easy selection and low maintenance cost, they provide stable and safe shut-off solutions for petrochemical, natural gas, power station and other high-pressure industries, acting as the core guarantee component for high-pressure pipeline systems.