Size: ¼” to 26″. Up to ANSI class 2500.Cast Steel Bellows Sealed Valves
Size: ¼” to 26″. Up to ANSI class 2500.Cast Steel Bellows Sealed Valves
Cast Steel Bellows Sealed Gate 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 S J Cast bellow seal valve acc. is suitable for cutting and connecting pipeline media in the petroleum, chemical, pharmaceutical, fertilizer, power and other industries with nominal pressure of 150 - 900lb and working temperature of -20 - 662°F (-29~350°C).The working principle of the bellows sealed globe valve is based on its unique design, which includes a bellows seal that protects the valve stem from corrosion and prevents the fluid from eroding the valve stem. The valve consists of a valve body, a disc, a valve stem, a bonnet, a bellows seal and packing.
The bellows are made of stainless steel or special alloy. The bellows valve sealing structure is reasonably designed, fatigue-resistant and has a long service life.
The bellows gate valve can be installed on various pipelines to cut off or connect media. This product is made of special materials and is suitable for various media such as water, steam, oil, nitric acid, acetic acid, oxidizing substances, urea, etc.
Advantage of Bellows Sealed Valves
- Long cycle life bellows (3000 cycles): Designed and certified for high pressure/high temperature environments.
- Bells monitoring interface (optional): A plug can be connected to the space above the bellows to monitor performance.
- Two second stem seals: a) back seat in open position; b) graphite packing.
- Superior seat surface: Seat CoCr alloy hardface, wedge is solid CoCr alloy.
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 extended bonnet bellows sealed gate valve is engineered for cryogenic and low‑temperature industrial pipeline applications. The long extended bonnet structure protects bellows components from ultra‑low‑temperature media, while bellows stem sealing eliminates packing leakage completely. Manufactured with WCB carbon steel body for Class150 pressure rating, flange connection ensures stable pipeline installation. Outside screw & yoke (OS&Y) design provides visual stem position for clear opening‑closing status observation. Widely applied in LNG, cryogenic storage systems, petrochemical, gas separation and cold‑medium process pipelines, this gate valve delivers reliable zero‑leak shut‑off performance for low‑temperature critical working conditions.
FAQ:
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