ITEM NO. 2 RP5597 IS MOUNTED ON BLOCK SO THAT AIR FLOWS INTO BLOCK BUT NOT OUT OF BLOCK.
| ITEM NO. | PART NO. | QTY. | DESCRIPTION |
| 1. | RAP1653 | 3 | SOLENOID ASSEMBLY AIR/12V (1 SOLENOID PER RAP1653) |
| 2. | RP5597 | 1 | CHECK VALVE 1/4" X 1/4" (1 VALVE PER RP5597) |
| 3. | RP5654 | 3 | HALF UNION (1/4" NPT X 3/8") |
| 4. | RF5599 | 1 | COUPLING 207P-4 (1/4" NPT) |
| 5. | RF4478 | 6 | 68NTA-6-4 (3/8" TUBE X 1/4" NPT) |