| 摘要 |
The disclosed valve has a seating gasket with a cross-sectional profile which includes an anchoring portion disposed in the bottom of the gasket groove in the fluid passageway. A seating portion of the gasket extends up from the anchoring portion and is narrower than the anchoring portion, so that the anchoring portion is exposed in the groove on both sides of the seating portion. A pair of fillets are held in the groove on both sides of the seating portion of the gasket and adjacent the anchoring portion to fix the gasket in the groove and to guide the valve disc between them. The gasket has longitudinal ribs to improve sealing and may be integral with an elongate toroid gasket for sealing against the valve disc in the neck of the valve. |
