Products
Bellow Seal Globe Valve
Product Overview
Our bellow seal globe valves feature a welded metallic bellows assembly that eliminates stem leakage, making them ideal for handling hazardous, high-purity, or extreme-temperature media. Compliant with API 602, ASME B16.34, and ISO 15848-1 standards.
Key Features
- ▷ Double Sealing System: Metal bellows + graphite packing
- ▷ Pressure Rating: ANSI Class 150 to Class 2500
- ▷ Temperature Range: -196°C to +650°C
- ▷ Leakage Rate: ≤10⁻⁶ mbar·l/s (helium tested)
- ▷ Cycle Life: 10,000+ operations (EN 12266-1 certified)
Technical Specifications
| Parameter | Specification |
|---|---|
| Body Material | ASTM A351 CF8M (SS316), A216 WCB, Monel |
| Bellows Type | 8-ply 316L Stainless Steel (Standard) Inconel 625/Hastelloy C-276 (Optional) |
| End Connections | RF Flange, BW, SW, Threaded (NPT/BSP) |
| Actuation | Manual (Handwheel/Gear) / Pneumatic / Electric |
Industrial Applications
Chemical Processing
- ▶ Chlorine gas handling (Seal welded design)
- ▶ Sulfuric acid transfer (PTFE encapsulated bellows)
LNG & Cryogenics
- ▶ LNG loading arms (-162°C service)
- ▶ Liquid nitrogen valves (vacuum jacketed option)
Why Choose Our Bellow Valves
VS Standard Globe Valves
- ✓ Zero fugitive emissions (TA-Luft certified)
- ✓ 5x longer service life
- ✓ 60% reduction in maintenance costs
Certifications
- ■ ISO 9001:2015 Quality System
- ■ API 607 Fire Safe Test
- ■ NACE MR0175 for H₂S environments
Custom Engineering Services
We provide:
- ◆ Bellows thickness optimization (0.1-0.3mm)
- ◆ Cryogenic stem extension design
- ◆ 3D model support (STEP/IGES files)
About China Valve Manufacturer
- √ 15+ years specializing in sealed valves
- √ 20,000㎡ production facility with CNC machining
- √ Global clients in 50+ countries
