安全阀

Based on the safe operation of pilot valve piston pressure relief valve (PilotOperatedPressureReliefValves) series.

国内一般称之为先导式安全阀，如图6所示，先导式安全阀由主阀和导阀组成，导阀操作主阀的开启和关闭。

The most important are as follows: Detection of type: valve stem seal leakage test and test; water valve tightness test; switch tightness test; the take-off safety valve Test; Detection Object: valve, the cut-off valve , safety valve, throttle valve, check valve, swing check valve, ball valve, regulating valve and other hollow pump body, valve body and housing, etc.; way valve connection: flange connection, threaded connection, welding connection; detection medium.

最重要的有以下几种：检测类型：阀门密封性试验及阀杆泄漏性试验；水中阀体密封性试验；开关密封性试验；安全阀的起跳值试验；检测对象：闸阀、截止阀、安全阀、节流阀、止回阀、摆动式逆止阀、球阀、调节阀和其他中空的泵体、阀体和壳体等；阀门联接方式：法兰联接、螺纹连接、焊接联接；检测介质。

Recommended National Standards GB/T12243-2005 "spring load safety valve directly," provides a safety valve back seat pressure Automatic sludge-draining filter should be greater than 85% of the entire set pressure or 80% of the entire set pressure.

推荐性国家标准GB/T12243-2005《弹簧直接载荷式安全阀》规定，安全阀的回座压力应大于85%的整定压力或80%的整定压力。

Recommended National Standards GB/T12243-2005 "spring load safety valve directly," provides a safety valve back seat pressure should be greater than 85% of the entire set pressure or 80% of the entire set pressure.

推荐性国家标准GB/T12243-2005《弹簧直接载荷式安全阀》规定，安全阀的回座压力应大于85%的整定压力或80%的整定压力。

Recommended National Standards GB/T12243-2005 "spring load safety valve directly," provides a safety valve discharge pressure should not exceed 1.1 times the setting pressure or 1.2 times the setting pressure.

推荐性国家标准GB/T12243-2005《弹簧直接载荷式安全阀》规定，安全阀的排放压力应不超过1.1倍的整定压力或1.2倍的整定压力。

Recommended National Standards GB/T12243-2005 "spring load safety valve directly," provides that a safety valve Safety valves opening height shall be not less than one quarter of the valve throat diameter, or one-twentieth of the valve throat diameter.

推荐性国家标准GB/T12243-2005《弹簧直接载荷式安全阀》规定，安全阀的开启高度应不小于四分之一的阀门喉径或二十分之一的阀门喉径。

Recommended National Standards GB/T12243-2005 "spring load safety valve directly," provides a safety valve opening height shall be not less than one quarter of the valve throat diameter, or one-twentieth of the valve throat diameter.

推荐性国家标准GB/T12243-2005《弹簧直接载荷式安全阀》规定，安全阀的开启高度应不小于四分之一的阀门喉径或二十分之一的阀门喉径。

Recommended National Standards GB/T12243-2005 "spring load safety valve directly," provides a safety valve discharge coefficient should meet or exceed the nameplate specified value.

推荐性国家标准GB/T12243-2005《弹簧直接载荷式安全阀》规定，安全阀的排量系数应达到或超过铭牌规定值。

Connect a pipe from the "DRAIN" tapping in the relief valve to a convenient open drain such as a floor drain or set tub in order to avoid water damage or scalding when valve operates.

从安全阀的&DRAIN&开孔连接一个管道，通向适合的排水口，如地漏，设置水盆以防止安全阀发挥作用时排放出来的水造成的破坏或烫伤。

If several valves installed together with the drum in a pipe directly connected to the short, short tube channel Full Lift Safety Valves cross-sectional area should not step on all exhaust valve 1.25 times the area.

如果几个安全阀共同装设在一根与锅筒直接相连的短管上，短管的通路截面积应不步于所有安全阀排汽面积的1.25倍。

And Pharaoh spoke to Joseph, saying, Your father and your brothers have come to you.

47：5 法老对约瑟说，你父亲和你弟兄们到你这里来了。

Additionally, the approximate flattening of surface strip using lines linking midpoints on perpendicular lines between geodesic curves and the unconditional extreme value method are discussed.

提出了用测地线方程、曲面上两点间短程线来计算膜结构曲面测地线的方法，同时，采用测地线间垂线的中点连线和用无约束极值法进行空间条状曲面近似展开的分析。