Bellow Seal Globe and Gate Valves
Zero-emission bellow seal valves engineered for hazardous, toxic, and high-temperature steam lines where absolute zero stem leakage is mandatory.
Advanced Bellow Seal Globe & Gate Valve Solutions
Bellow seal globe and gate valves use a multi-ply metallic bellows pack welded to both the stem and bonnet, providing a hermetic seal that completely eliminates stem emission. Designed in accordance with MSS SP-117 for high cyclic life, these valves offer maintenance-free operation by eliminating frequent gland packing adjustments. Available in sizes from 1/4" to 26" NB and pressure ratings from ANSI Class 150 to 2500, they are the ideal solution for heat transfer oil, vacuum systems, and toxic media where superior safety and zero leakage are critical.
Key Features
- ✔️ Zero Stem Leakage - Multi-ply bellows provide leak-proof sealing, preventing fugitive emissions
- ✔️ Extended Service Life - Bellows designed for high cyclic life in accordance with MSS SP-117
- ✔️ Maintenance-Free Operation - Eliminates frequent gland packing adjustments and reduces maintenance costs
- ✔️ Superior Safety - Ideal for hazardous, toxic, flammable, and high-temperature media where leakage cannot be tolerated
- ✔️ Wide Pressure & Size Range - Available in multiple pressure classes and end connections for diverse industrial applications
Technical Specifications
| Parameter | Details |
|---|---|
| Size Range | 1/4" NB to 26" NB |
| Pressure Rating | ANSI Class 150 to 2500 (Higher Classes Available for Selected Sizes) |
| End Connections | Screwed End, Flanged End & Butt Weld End |
| Bonnet Design | Bolted Bonnet & Welded Bonnet |
| Bellows Cyclic Life | Designed as per MSS SP-117 Standard |
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