API 6A Gate Valve seals frequently incorporate pressure-energized metal-to-metal bonnet seals and lip seals between seat and body, assisting low-pressure sealing and preventing particle intrusion into the body cavity. These features guarantee integrity for both high-pressure shut-off and routine flow management situations.​ https://globalsealstech.com/product-category/oil-gas-seals/api-6a-gate-valve-seals/