Sterling 882.00379.00 ユーザーズマニュアル

Conveying System Mechanical Components    Chapter 3: Installation 

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  Check valves are a critical feature on single line Y systems. You must have a check 

valve installed on the material inlet inside the receiver on all vacuum hoppers in single 
line Y installations. 

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  Check valves must open when the receiver is being loaded and seal to prevent a 

vacuum leak when other hoppers are being loaded. 

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  Vacuum receivers for these systems have a special factory-installed extended material 

inlet tube to hold the check valve. 

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  The check valve must not be pressed too far onto the inlet stub to prevent proper 

sealing. 

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  The hinge of the check valve should be up to prevent material from being deflected up 

into the vacuum hopper filter. 

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  Do not allow vacuum receivers with check valves to be over-filled to a point above the 

bottom of the check valve. Over-filling prevents the check valve from sealing and 
creates a vacuum loss. Adjust the conveying time on Time-Fill systems to prevent this 
from happening. 

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  Inspect periodically for erosion or wear. Replace as required.