Easily converts Ball Check Valve to a Foot Valve.

能够轻易地将球体止回阀转换成底阀。

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Full Cartridge Replacement Kits are available for all True Union style ball valves and ball check valves.

对于所有真活接类型球阀和球体止回阀，可提供完整的更换筒组件。

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Gravity ball check may be converted for air or gas venting by replacement of standard ball with floater PP ball.

通过用漂浮的PP球更换标准球，重力球形止回阀可以改造为适用于空气或气体排气口。

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"And,we come and check it out. And,all of our dogs are extremely ball driven they love to play.

VOA: standard.2010.02.22

There is a law where the umpires often, and at irregular intervals, check the ball and they saw nothing wrong with it.

BBC: Ball-tampering row angers Strauss despite draw

Kimberly advises her class to take a copy of the store's terms and conditions with them and, if the store manager still refuses to play ball when you arrive at the check-out armed with your coupons, phone corporate headquarters.

BBC: Why spend 15 hours a week cutting coupons?

Prior, too, finally had to depart, nicking a high bouncer from Ben Hilfenhaus - although the dismissal was delayed as umpire Billy Bowden radioed the third official to check Hilfenhaus had not sent down a no-ball.

BBC: Ashes: England close in on series victory in Australia