球形检测阀
Ball Type Test Valves
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检测止回阀1号
Test Check Valve No. 1
步骤1
Step 1 |
确保关闭阀1号处于开启状态，关闭阀2号处于关闭状态。
Ensure shutoff #1 is open, shutoff #2 is closed. |
步骤2
Step 2 |
将高端软管连接到测试旋塞3号，将低端连接到测试旋塞2号，并开启测试旋塞2号和测试旋塞3号。
Connect high side hose to test cock #3, low
side to test cock #2 and open both test cock #2 and test cock #3. |
步骤3
Step 3 |
开启阀门C，然后开启A，从高端排气。关闭阀门A，然后开启B，进行低端排气。关闭阀门B。
Open valve C, then open A to bleed air from
the high side. Close valve A, then open B to bleed low side. Close
valve B. |
步骤4
Step 4 |
将排气软管松散连接到测试旋塞1号。开启阀门A，从排气软管排气。在测试旋塞1号上紧固排气软管，开启测试旋塞1号。
Connect vent hose loosely to test cock #1. Open
valve A to vent air from vent hose. Tighten vent hose at test cock
#1, open test cock #1. |
步骤5
Step 5 |
关闭关闭阀1号。慢慢松开测试旋塞2号上的软管，直到压差表升到2 psi，然后再紧固软管。如果压差读数没有减少，则将止回阀记录为"紧"。
Close shutoff #1. Slowly loosen hose at test
cock #2 until differential gauge rises to 2 psi and retighten hose.
If the differential reading does not decrease, record check valves
as "tight". |
检测止回阀2号
Test Check Valve No. 2
步骤1
Step 1 |
将高端软管移到测试旋塞4号上，将低端软管移到测试旋塞3号上，开启测试旋塞3号和测试旋塞4号。从测试旋塞1号上拆卸排气软管，开启关闭阀1号。
Move the high side hose to test cock #4, low
side to test cock #3 and open both test cock #3 and test cock #4.
Remove vent hose from test cock #1, open shutoff #1. |
步骤2
Step 2 |
开启阀门C，然后开启阀门A，从高端排气。关闭阀门A，然后开启阀门B，从低端排气。关闭阀门B。
Open valve C, then open valve A to bleed air
from the high side. Close valve A, then open valve B to bleed lowside.
Close valve B. |
步骤3
Step 3 |
将排气软管松散连接到测试旋塞阀1号。开启阀门A，从排气软管上排气。在测试旋塞1号上紧固排气软管，开启测试旋塞1号。
Connect vent hose loosely to test cock #1. Open
valve A to vent air from the vent hose. Tighten vent hose at test
cock #1, open test cock #1. |
步骤4
Step 4 |
关闭关闭阀1号，然后慢慢松开测试旋塞3号上的软管，直到压差表升到2 psi，然后重新紧固软管。如果压差读数没有减少，则将止回阀记录为紧。拆卸所有软管，将阀门恢复到初始工作状态。
Close shutoff #1, then slowly loosen hose at
test cock #3 until differential gauge rises to 2 psi and retighten
hose. If the differential reading does not decrease, record check
as tight. Remove all hoses and restore valve to original working condition.
注意：如果关闭阀2号泄漏过于严重，则对总成的第一和第二止回阀的上述检测将会无结果。为了检测泄漏的2号关闭阀，需要采用下列程序。
Note:
The assembly will fail both the first and second check valve tests
above, if shutoff #2 leaks excessively. To test for a leaky #2 shutoff,
use the following procedure. |
检测泄漏的2号关闭阀
Test for Leaky No. 2 Shutoff
步骤1
Step 1 |
将高端软管连接到测试旋塞1号，将低端软管连接到测试旋塞4号。开启测试旋塞1号和测试旋塞4号。关闭关闭阀1号和2号。
Connect the high side to test cock #1, low side
to test cock #4. Open test cock #1 and test cock #4. Close shutoffs
#1 and #2. |
步骤2
Step 2 |
关闭阀门C。开启阀门A，然后将阀门B开启办圈，松开测试旋塞4号上的软管进行排气。重新紧固软管。
Close valve C. Open valve A, then open valve
B 1/2 turn, loosen hose at test cock #4 to remove
air. Retighten hose. |
步骤3
Step 3 |
如果压差表上到0以上，则关闭阀2号存在过于严重的泄漏，必须更换，以便检测这个总成。
If the differential gauge rises above 0, there
is excessive leakage at shutoff #2 and it must be replaced to test
the assembly.
注意：产品资料随时可能变更并替代以前的出版物，孰不另行通知。
Note:
Product informaiton is subject to change without notice and supersedes
all previous publications. |
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