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- Close the shutoff valve upstream of the regulator. 关闭调节阀上游的关断阀。
- Close shutoff valve No. 2 then No. 1. 关闭关闭阀2号，然后关闭关闭阀1号。
- Close shutoff valve No. 2 then shutoff valve No. 1. 关闭2号关闭阀，然后关闭1号关闭阀。
- Purpose: To test shutoff valve No. 2 for tightness. 目的:检测2号关闭阀的密封性。
- Install a shutoff valve upstream of the regulator. 在调节阀的上游安装关闭阀。
- Remove bypass hose from test cock No. 1, open shutoff valve No. 1. 从测试旋塞1号上拆卸旁路软管，开启1号关闭阀。
- The test cock is on the inlet side of the shutoff valve. 测试旋塞位于关闭阀的进口一侧上。
- Install a shutoff valve in the cold water inlet line. 在冷水进水管处安装一个关闭阀。
- Close shutoff valve No. 2 then shutoff valve No. 1 on the assembly. 关闭2号关闭阀，然后关闭总成上的1号关闭阀。
- No downstream shutoff valves are allowed. 不允许有下游关闭阀。
- FLIGHT CONTROLS HYDRAULIC SHUTOFF VALVES. 飞行操纵液压关断活门。
- Close shutoff valves No. 1 and No. 2. 关闭1号关闭阀和2号关闭阀。
- Close shutoff valve No. 2 then shut off valve No. 1 on test assembly. 关闭2号关闭阀,然后关闭测试总成上的1号阀门。
- Remove all test equipment and open No. 2 shutoff valve of the device. 拆卸所有检测设备,开启装置上的2号关闭阀。
- There can be no shutoff valves downstream of an AVB. 在大气真空断路阀的下游不能有关断阀。
- If the reading returns to +PSID, No. 2 shutoff valve is leaking excessively and must be replaced to test the valve. 如果读数恢复到+PSID，则2号关闭阀泄漏过于严重，必须对其更换，以便进行阀门的检测。
- Install a shutoff valve in the cold water inlet. Install a listed temperature-pressure relief valve in the remaining fitting. 在冷水进水管上安装一个关断阀。在剩下的螺纹接头上安装额定温度/水压的安全阀。
- Gate valves are the most commonly used shutoff valve in the industry today. 如今行业内，闸阀最常用作关闭阀，用于要求压降最小，能够双向启闭的应用场合。
- Slightly open shutoff valve No. 1 and allow water to fill the tube to the top then close No. 1 shutoff. 稍微开启关闭阀1号，将水注入管子直到顶部为止，然后关闭1号关闭阀。
- NOTE: For Australia and New Zealand: Pipeline strainers should be installed between the upstream shutoff valve and the inlet of the backflow preventer. 注意：适用于澳大利亚和新西兰：管路过滤器应该安装在上游关闭阀和防回流阀进口之间。
