Size: ¼” to 26″. Up to ANSI class 2500.Long Bonnet Bellows Sealed Valves
Size: ¼” to 26″. Up to ANSI class 2500.Long Bonnet Bellows Sealed Valves
Long Bonnet Bellows Sealed Globe Valves
Sizes DN1/4" to DN26"
ANSI Class 150 to 2500 (for restricted sizes)
Ends available in threaded, flanged and butt weld
Bolted and welded bonnet designs
Bells cycle life per MSS p117
Oil and gas applications
ANSI Class 150 to 2500 (for restricted sizes)
Ends available in threaded, flanged and butt weld
Bolted and welded bonnet designs
Bells cycle life per MSS p117
Oil and gas applications
Quantity
What is SJ Bellows Sealed Valves
The bellows stop valve with extended bonnet is a bellows sealed stop valve developed by SJ Company. Its biggest feature is that its metal bellows is sealed in an extended sealing space and is completely unaffected by the medium, temperature and pressure. Therefore, this type of bellows stop valve has a longer service life than ordinary valves. There is an additional sealing protection on the bellows seal, and its material is Ti, which is a high temperature and corrosion resistant material. In this case, the valve stem packing has three types of seals. Therefore, the valve works reliably and stably, especially suitable for harsh media.
Advantage of Bellows Sealed Valves
- Replace the function of traditional glands with flexible metal bellows, reduce maintenance frequency and operating costs.
- Bellows are multi-layer, welded seam-welded and constructed of Inconel 625 material, long life.
- Bellows are welded on stem and bonnet to ensure zero leakage of gland, eliminating harmful chemicals released into the atmosphere.
- Replace threaded and sealed welded joints with flange connections to ensure zero leakage. The valve is therefore sealed)
- The valve seat can be simply refurbished by grinding the valve body seat and replacing the disc, which can be performed on site or in the end-user shop.
- Vacuum brazed valve body seat replaces the traditional threaded seat, thus eliminating potential leakage paths and reducing maintenance.
Main Part Materials
How Dose SJ Bellows Sealed Valves Working
Why Choose SJ ?
SJ's core themes are closely linked to Valve (Valve), dedication (Max), and helping customers succeed (Victory). Whenever and wherever special fluids need to be transported, controlled or closed, customers around the world rely on our expertise and products. VMV is committed to providing customers with the best advice, excellent quality, the highest reliability, and reliable service.This manual bellows‑sealed globe valve is specially designed for gas, toxic and flammable medium working conditions. The bellows stem sealing structure achieves zero external leakage, effectively prevents gas medium escaping from valve stem packing area. Cast steel body with PN40 pressure rating, DN25 size, flange connection for reliable pipeline installation. Handwheel manual operation provides stable cut‑off performance. Bright yellow coating serves as obvious gas‑medium identification mark. Widely used in natural gas pipeline, city gas network, chemical flammable‑medium process system, it provides safe and reliable shut‑off guarantee for gas‑related projects.
FAQ:
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