Pressure Seal Bonnet Bellows Gate Valve

Fully forged high temperature and high pressure bellows, globe valve, fusion pressure self-sealing valve and bellows valve have their technical advantages. The self-sealing valve has stable performance under high temperature and high pressure. The higher the medium pressure, the greater the upward thrust of the middle path and the better the sealing effect of the middle road. And the leakage of the middle road will not occur. What’s more, with bellows valves triple seal design (bellows seal, valve stem packing seal and pour stem seal), stem packing also can avoid leakage when the bellows failure. Even packing leakage, the valve stem falls in a fully open place and timely replacement of packing also can prevent the leakage and conform to the international standard of sealing.

Advantages of UNIQUE full forged high temperature and high pressure bellows gate valve and globe valve:
1.The valve body and bonnet are connected by pressure self-sealing structure, wedge-shaped sealing ring (graphite clip stainless steel wire) and four-open ring combination. Force the sealing ring under high pressure deformation to achieve reliable seal and the higher the pressure, the more reliable the sealing.
2. Key components of the bellows seal bottom end metal bellows, together with stem,  adopts automatic seam welding and the upper connection plate also adopts automatic seam welding, forming a protective barrier between the fluid and the valve stem to ensure that zero leakage of the valve stem .
3. Reasonable stuffing box design, using the combination of graphite, flexible graphite packing and two ends packing, ensures that the valve has no external leakage and meets the environmental protection requirements.
4. Stem reverse sealing design can be used in special case to replace packing.
5. The surface of the seat is welded with cemented carbide to ensure long working safety and reliability.
6. The manual switch adopts the structure of thrust bearing to enable the valve to open and close easily.

Product application: High temperature, high pressure, inflammable, explosive, toxic, strong permeability and radioactivity, precious and high purity media, etc.
Material: Forging steel, forging stainless steel nominal diameter: DN15-DN400, 1/2 Inch - 16 Inch.
Nominal pressure: PN16-PN250, Class 150 LB - 2500 LB.
It can provide customized PN64 and above pressure products.
Connection mode: Flange, thread, welding (butt welding, socket welding).
Applicable temperature: 196℃ - 600℃.