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4.1.8.1
Model RF-DBO: Insert the Bolt/Pin through the drilled hole(s) and completely weld or use some other
means of ensuring that this bolt/pin will not fall out or be removed from the expandable clamp.
Figure 30: Model RF-DBO Anchor Bolt/Pin Install
4.1.8.2
Model RF-DBI-IN: Insert the Bolt/Pin through the drilled hole(s) and completely weld or use some other
means of ensuring that this bolt/pin will not fall out or be removed from to the internal expandable clamp.
Figure 31: Model RF-DBI-IN Anchor Bolt/Pin Installation
4.1.8.3
Model RF-DBI-LH: Insert the Bolt/Pin through the drilled hole(s) and completely weld or use some other
means of ensuring that this bolt/pin will not fall out or be removed from to the internal expandable clamp.
Figure 32: Model RF-DBI-LH Anchor Bolt/Pin Installation
5.0 Operation
The Rubber-Flex Duckbill Check Valves require little operational requirements. Each unit is an elastomeric back flow device which relies
solely on inlet flow pressure and back flow pressure to provide operation.
6.0 Maintenance
Rubber-Flex Duckbill Check Valves require little maintenance. Periodic inspections can ensure that the check valve will provide years of
maintenance-free service. Check for cuts or gouges which can easily be repaired with a self-curing rubber compound (Contact Cla-Val).
Ensure that the bill section is free from any debris that may have been lodged in the bill. This will be the only areas of concern that require
periodic inspection.