Abstract: A trim of a check valve includes a stem, a fixed member including two opposite through holes, a rotational member secured to the stem and including two opposite recesses, a hollow coupling member including an inlet at one end, a sleeve releasably secured to the coupling member wherein the sleeve includes an outlet at an other end and the fixed member and the rotational member are disposed at one end of the sleeve, a closing member moveably disposed at an other end of the sleeve, a connector releasably secured to an other end of the stem, and a biasing member biased between the closing member and the connector. In response to fluid pressure differential greater than a predetermined value the rotational member is clockwise turned to align the through holes with the recesses to allow the fluid to flow out of the outlet.

Abstract: A trim of a check valve includes a stem, a fixed member including two opposite through holes, a rotational member secured to the stem and including two opposite recesses, a hollow coupling member including an inlet at one end, a sleeve releasably secured to the coupling member wherein the sleeve includes an outlet at an other end and the fixed member and the rotational member are disposed at one end of the sleeve, a closing member moveably disposed at an other end of the sleeve, a connector releasably secured to an other end of the stem, and a biasing member biased between the closing member and the connector. In response to fluid pressure differential greater than a predetermined value the rotational member is clockwise turned to align the through holes with the recesses to allow the fluid to flow out of the outlet.

Abstract: A battery connector includes a housing, two sidewalls extending from opposite sides of the housing, and a plurality of latches thereby defining a receiving chamber for receiving a battery therein. Each latch has a securing portion extending into the receiving chamber for securing the battery. At least one securing portion of the latch has a guiding surface for guiding the battery to readily extend into the receiving chamber. Two electrically conductive contacts are attached to the housing. Each contact has one end extending into the receiving chamber for electrically connecting with an electrode of the battery, and the other end extending oppositely and exposed to the bottom surface of the housing for mounting on and electrically connecting with a PCB. The height of each contact extending into the receiving chamber is less than the height of the latch.