Product Description
1. Cast Steel Globe Valve with Pressure Self Tightening Seal adopts pressure self tightening bonnet construction. Higher medium pressure creates larger bonnet gasket compression force for more reliable sealing performance.
2. Designed per ASME B16.34 and BS 1873 standard, specially applied for high temperature high pressure steam and process medium pipelines.
3. Material of body, disc and pressure self tightening seal assembly can be selected according to project working conditions.
4. Widely used in thermal power, petroleum, chemical high temperature high pressure process pipelines for medium shut off and throttling regulation.
Features & Benefits
1. Pressure self tightening bonnet. The sealing performance of bonnet improves as pressure rises to ensure reliable sealing, suitable for high temperature high pressure working conditions.
2. Trim feature: Loosely connected double disc structure, rising stem. Rolling bearings are equipped for medium and large bore for easy opening and closing.
3. Hard alloy overlay on disc and seat, erosion resistant, suitable for frequent throttling service.
4. Stem is quenched and tempered with surface nitriding treatment, featuring good corrosion resistance and anti galling property.
5. Bottom mounted anti blowout stem structure to guarantee safe equipment operation.
6. Medium flows in from bottom and out from top to reduce erosion on packing area.
7. Bonnet can be disassembled and assembled conveniently for maintenance and replacement of internal sealing components.
