The following four test procedure instructional worksheets are available as PDF-format downloads.
Simply download, print and save for your reference.

1)  Reduced Pressure Zone RPZ  [download; 64k]
2)  Double Check Valve DC  [download; 62k]
3)  Spill resistant vacuum breaker SVB  [download; 57k]
4)  Pressure Vacuum Breaker PVB  [download; 59k]