Installation control valves
    1.
    发明授权
    Installation control valves 失效
    安装控制阀

    公开(公告)号:US4367861A

    公开(公告)日:1983-01-11

    申请号:US186044

    申请日:1980-09-11

    CPC分类号: F16K1/225 F16K1/221 F16K17/32

    摘要: An installation control valve, for example for use in a fire fighting sprinkler installation, comprises a pivotal butterfly valve disc co-operable with a movable stop, which in one position abuts the valve disc to retain the valve closed against pressure forces acting thereon. A retaining mechanism is releasably held to resist stop movement and so prevent valve disc opening but is operable under a predetermined condition to permit stop movement from said one position to a second position. When the stop is in the second position, unequal pressure forces on either side of the valve disc cause same to move thereby opening the valve.

    摘要翻译: 安装控制阀例如用于消防喷洒装置,包括与可移动止动件相配合的枢转蝶形阀盘,该活动止动件在一个位置上与阀盘相接触,以保持阀门抵抗作用在其上的压力。 保持机构被可释放地保持以阻止停止运动,并且因此防止阀盘打开,但是可以在预定条件下操作以允许从所述一个位置停止移动到第二位置。 当止动器处于第二位置时,在阀盘的任一侧上的不均等的压力导致相同的移动,从而打开阀门。