<html> <head> <title>Rule 74:02:09:08 Chemical injection line check valve.</title> <META NAME="Keywords" Content="Administrative Rules 74:02:09:08"> <META NAME="Description" Content="Administrative Rules 74:02:09:08 Chemical injection line check valve."> <meta name=Generator content="Microsoft Office HTML Filter 2.0"> <meta http-equiv=Content-Type content="text/html; charset=windows-1252"> <meta name=Originator content="Microsoft Word 10"> <style> <!-- --> </style> </head> <body lang=EN-US> <div> <p><font size=3 face="Times New Roman">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; <b>74:02:09:08.&nbsp;&nbsp;Chemical injection line check valve.</b> The chemical injection line check valve shall be located between the point of chemical injection into the irrigation pipeline and the chemical injection pump, as illustrated in Appendix A at the end of this chapter. Unless a positive displacement pump is utilized, a second chemical injection line check valve shall also be located between the point of chemical injection into the irrigation pipeline and chemical injection pump. The valve or valves shall be designed to have a minimum opening (cracking) pressure of ten pounds per square inch.</font></p> <p><font size=3 face="Times New Roman">&nbsp;</font></p> <p><font size=3 face="Times New Roman">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; <b>Source:</b> 15 SDR 81, 15 SDR 84, effective November 27, 1988.</font></p> <p><font size=3 face="Times New Roman">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; <b>General Authority:</b> SDCL <A HREF="/statutes/DisplayStatute.aspx?Type=Statute&Statute=34A-2A-3">34A-2A-3.</A></font></p> <p><font size=3 face="Times New Roman">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; <b>Law Implemented:</b> SDCL <A HREF="/statutes/DisplayStatute.aspx?Type=Statute&Statute=34A-2A-3">34A-2A-3.</A></font></p> <p><font size=3 face="Times New Roman">&nbsp;</font></p> </div> </body> </html>