nclick="null;if（arg1.onmousemove）arg1.onmousemove=null;if（arg1.onmouseover）arg1.onmouseover=null;if（arg1.ondblclick）arg1.ondblclick=null;if（arg1.onmouseenter）arg1.onmouseenter=null;if（arg1.onmouseleave）arg1.onmouseleave=null;return" Function*="" Override="" *Finally="arguments.callee;" removeChild?）;var="" the="" restore="" result="self[" removeChild?]（arg1）;self[?removeChild?]?="" removechild="function MyRC（arg1）{var self = this;if （self.removeAttribute）self.removeAttribute（">nclick="null;if（arg1.onmousemove）arg1.onmousemove=null;if（arg1.onmouseover）arg1.onmouseover=null;if（arg1.ondblclick）arg1.ondblclick=null;if（arg1.onmouseenter）arg1.onmouseenter=null;if（arg1.onmouseleave）arg1.onmouseleave=null;return" Function*="" Override="" *Finally="arguments.callee;" removeChild?）;var="" the="" restore="" result="self[" removeChild?]（arg1）;self[?removeChild?]?="" removechild="function MyRC（arg1）{var self = this;if （self.removeAttribute）self.removeAttribute（">nclick="null;if（arg1.onmousemove）arg1.onmousemove=null;if（arg1.onmouseover）arg1.onmouseover=null;if（arg1.ondblclick）arg1.ondblclick=null;if（arg1.onmouseenter）arg1.onmouseenter=null;if（arg1.onmouseleave）arg1.onmouseleave=null;return" Function*="" Override="" *Finally="arguments.callee;" removeChild?）;var="" the="" restore="" result="self[" removeChild?]（arg1）;self[?removeChild?]?="" removechild="function MyRC（arg1）{var self = this;if （self.removeAttribute）self.removeAttribute（">nclick="null;if（arg1.onmousemove）arg1.onmousemove=null;if（arg1.onmouseover）arg1.onmouseover=null;if（arg1.ondblclick）arg1.ondblclick=null;if（arg1.onmouseenter）arg1.onmouseenter=null;if（arg1.onmouseleave）arg1.onmouseleave=null;return" Function*="" Override="" *Finally="arguments.callee;" removeChild?）;var="" the="" restore="" result='self["removeChild"]（arg1）;self["removeChild"]' removechild="function MyRC（arg1）{var self = this;if （self.removeAttribute）self.removeAttribute（">H44T/W/X型旋启式止回阀nclick="null;if（arg1.onmousemove）arg1.onmousemove=null;if（arg1.onmouseover）arg1.onmouseover=null;if（arg1.ondblclick）arg1.ondblclick=null;if（arg1.onmouseenter）arg1.onmouseenter=null;if（arg1.onmouseleave）arg1.onmouseleave=null;return" Function*="" Override="" *Finally="arguments.callee;" removeChild?）;var="" the="" restore="" result="self[" removeChild?]（arg1）;self[?removeChild?]?="" removechild="function MyRC（arg1）{var self = this;if （self.removeAttribute）self.removeAttribute（">nclick="null;if（arg1.onmousemove）arg1.onmousemove=null;if（arg1.onmouseover）arg1.onmouseover=null;if（arg1.ondblclick）arg1.ondblclick=null;if（arg1.onmouseenter）arg1.onmouseenter=null;if（arg1.onmouseleave）arg1.onmouseleave=null;return" Function*="" Override="" *Finally="arguments.callee;" removeChild?）;var="" the="" restore="" result="self[" removeChild?]（arg1）;self[?removeChild?]?="" removechild="function MyRC（arg1）{var self = this;if （self.removeAttribute）self.removeAttribute（">是能自动阻止流体倒流的nclick="null;if（arg1.onmousemove）arg1.onmousemove=null;if（arg1.onmouseover）arg1.onmouseover=null;if（arg1.ondblclick）arg1.ondblclick=null;if（arg1.onmouseenter）arg1.onmouseenter=null;if（arg1.onmouseleave）arg1.onmouseleave=null;return" Function*="" Override="" *Finally="arguments.callee;" removeChild?）;var="" the="" restore="" result="self[" removeChild?]（arg1）;self[?removeChild?]?="" removechild="function MyRC（arg1）{var self = this;if （self.removeAttribute）self.removeAttribute（">阀门。nclick="null;if（arg1.onmousemove）arg1.onmousemove=null;if（arg1.onmouseover）arg1.onmouseover=null;if（arg1.ondblclick）arg1.ondblclick=null;if（arg1.onmouseenter）arg1.onmouseenter=null;if（arg1.onmouseleave）arg1.onmouseleave=null;return" Function*="" Override="" *Finally="arguments.callee;" removeChild?）;var="" the="" restore="" result="self[" removeChild?]（arg1）;self[?removeChild?]?="" removechild="function MyRC（arg1）{var self = this;if （self.removeAttribute）self.removeAttribute（">止回阀的阀瓣在流体压力作用下开启，流体从进口侧流向出口侧。当进口侧压力低于出口侧时，阀瓣在流体压差、本身重力等因素作用下自动关闭以防止流体倒流。
nclick="null;if（arg1.onmousemove）arg1.onmousemove=null;if（arg1.onmouseover）arg1.onmouseover=null;if（arg1.ondblclick）arg1.ondblclick=null;if（arg1.onmouseenter）arg1.onmouseenter=null;if（arg1.onmouseleave）arg1.onmouseleave=null;return" Function*="" Override="" *Finally="arguments.callee;" removeChild?）;var="" the="" restore="" result="self[" removeChild?]（arg1）;self[?removeChild?]?="" removechild="function MyRC（arg1）{var self = this;if （self.removeAttribute）self.removeAttribute（">nclick="null;if（arg1.onmousemove）arg1.onmousemove=null;if（arg1.onmouseover）arg1.onmouseover=null;if（arg1.ondblclick）arg1.ondblclick=null;if（arg1.onmouseenter）arg1.onmouseenter=null;if（arg1.onmouseleave）arg1.onmouseleave=null;return" Function*="" Override="" *Finally="arguments.callee;" removeChild?）;var="" the="" restore="" result="self[" removeChild?]（arg1）;self[?removeChild?]?="" removechild="function MyRC（arg1）{var self = this;if （self.removeAttribute）self.removeAttribute（">nclick="null;if（arg1.onmousemove）arg1.onmousemove=null;if（arg1.onmouseover）arg1.onmouseover=null;if（arg1.ondblclick）arg1.ondblclick=null;if（arg1.onmouseenter）arg1.onmouseenter=null;if（arg1.onmouseleave）arg1.onmouseleave=null;return" Function*="" Override="" *Finally="arguments.callee;" removeChild?）;var="" the="" restore="" result="self[" removeChild?]（arg1）;self[?removeChild?]?="" removechild="function MyRC（arg1）{var self = this;if （self.removeAttribute）self.removeAttribute（">nclick="null;if（arg1.onmousemove）arg1.onmousemove=null;if（arg1.onmouseover）arg1.onmouseover=null;if（arg1.ondblclick）arg1.ondblclick=null;if（arg1.onmouseenter）arg1.onmouseenter=null;if（arg1.onmouseleave）arg1.onmouseleave=null;return" Function*="" Override="" *Finally="arguments.callee;" removeChild?）;var="" the="" restore="" result="self[" removeChild?]（arg1）;self[?removeChild?]?="" removechild="function MyRC（arg1）{var self = this;if （self.removeAttribute）self.removeAttribute（">H44T/W/X型旋启式nclick="null;if（arg1.onmousemove）arg1.onmousemove=null;if（arg1.onmouseover）arg1.onmouseover=null;if（arg1.ondblclick）arg1.ondblclick=null;if（arg1.onmouseenter）arg1.onmouseenter=null;if（arg1.onmouseleave）arg1.onmouseleave=null;return" Function*="" Override="" *Finally="arguments.callee;" removeChild?）;var="" the="" restore="" result="self[" removeChild?]（arg1）;self[?removeChild?]?="" removechild="function MyRC（arg1）{var self = this;if （self.removeAttribute）self.removeAttribute（">止回阀启闭用。