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Welcome to WORLD
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http://www.globevalves.net
http://www.brassvalves.cn
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壳体的试验方法和步骤：
封闭阀门的进口和出口，压紧填料压盖，使启闭件处于部分开启位置；给体腔壳充满介质，并逐渐加压到试验压力；达到规定时间后，检查壳体（包括填料函及阀体与阀盖连接处）是否有渗漏。
壳体试验的试验温度、试验介质、试验压力、试验持续最短时间及允许渗漏率见表。
密封性能测试的方法和步骤：
封闭阀门两端，启闭件处于微开状态，给体腔充满介质后，并逐渐加压到试验压力；关闭启闭件，释放阀门一端的压力。另一端也按同样方法加压。每台出厂前必须做上密封及阀座密封试验（按规定的压力）不得泄漏。
密封试验的试验温度、试验介质、试验压力、试验持续最短时间及允许渗漏率见表。 |
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Low middle pressure ball valve inspecting and testing
Methods & Procedures for shell test:
Covering the entrance and exit of the valve, pressing the gland tightly to make the disc be in intermediate positions. Full filling with medium in the shell body to reach testing pressure gradually. Inspecting for the shell including the gland and union between the body and cap to see if there is leakage when reaches to stipulated time.
Testing temperature. Testing medium .Testing pressure. The shortest continued time and allowed leak rate on shell test and seal function test as following sheet.
Methods & Procedures for Seal function test:
Covering the two ends of the valve to make the disc be slight opening position and to reach to testing pressure with full medium in the shell body. Releasing the pressure of one end when closing. Doing the same with another end .Being tested by seal function to make sure without any leakage before selling into the makets.
Testing temperature. Testing medium. Testing pressure. The shortest continued time and allowed leak rate on shell test and seal function test as following sheet. |
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项 目
Ifem
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执行标准（API598 ）
Enforce standerd
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允许渗漏率
allowed leak rate |
壳体试验
Shell test |
试验压力Mpa
Testing pressure |
2.4 |
无渗漏（无明显点滴或外表潮湿）
no leak(no obvious dropping of surface wet) |
持续时间S
Continued time15
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15 |
试验温度
Testing temperature
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≤125 °F （52 ℃） |
试验介质
Testing medium
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水 water |
密封性能试验
Seal function test |
试验压力Mpa
Testing pressure
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2.4 |
无渗漏
noleak |
持续时间S
Continued time15 |
15 |
试验温度
Testing temperature |
≤125 °F （52 ℃） |
试验介质
Testing medium
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水 water |
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