Product Description
1. API Wedge Cast Steel Gate Valve with Pressure Self Tightening Seal adopts wedge gate disc structure, bonnet is of pressure self‑tightening seal type. Higher medium pressure brings more reliable sealing performance.
2. The valve design complies with API 600, API 603,ASME B16.34 standards, suitable for piping under high temperature and high pressure service.
3. Material options for body, gate disc, stem and other components are available according to project working conditions.
4. It is widely used in thermal power, petroleum, chemical high‑temperature high‑pressure process pipelines for full open and full close shut‑off of medium, not intended for throttling service.
Features & Benefits
1. Product design: Full bore flow path, outside screw and yoke with bolted bonnet.
2. Gate feature: Guided flexible wedge, rigid wedge or split wedge optional, replaceable seat rings.
3. Sealing performance: Equipped with flexible wedge, seating surfaces hardfaced with cobalt based hard alloy, good wear resistance, corrosion resistance and anti-galling property, reliable sealing performance and long service life.
4. Stem safety structure: Forged T type stem with back seat design, reliable sealing, preventing stem blowout and over travel, safe under fire condition.
5. Stem feature: Quenched and tempered with surface nitriding treatment, featuring good corrosion resistance and anti-galling performance.
6. Operation feature: Rising stem, non-rising handwheel, rolling bearings fitted for large and medium sizes for easy operation.
7. Pressure seal bonnet design for body cavity, bonnet sealing performance improves with rising pressure to ensure reliable sealing.
8. Material combination feature: Component materials, flange standards, flange facing types and butt weld end dimensions can be reasonably selected according to actual working conditions or customer requirements.
