| 摘要 |
A non-clogging actuator assembly (10) having a flexible face member (16) that flexes away from first and second positive shutoff mating surfaces (24, 26) when product under pressure flows into contact with the flexible face member (16). The flexible face member (16) then resiliently springs back into abutting, sealing contact with these shutoff mating surfaces (24, 26). Preferably, the member (16) flexes away from the two shutoff mating surfaces (24, 26) at a predetermined minimum pressure, such as 55 psig, and then flexes back into sealing contact when the product pressure drops below this minimum pressure, thereby controlling the dispensing of the product with a positive shut off.
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