Waters
ASI Check Valves are a High Performance Upgrade for Your Waters Pump
ASI Self-priming Check Valves
Waters 616 SS
| Description | OEM Part Number | ASI Part Number |
| Inlet Check Valve (Cartridge & Housing) |
55845 & 24960 | 250-1060* |
| Inlet Cartridge Direct Replacement | 250-1040* | |
| Inlet Housing | 250-1050 | |
| Outlet Check Valve (Cartridge & Housing) |
55845 & 24960 | 250-1065* |
| Outlet Cartridge Direct Replacement | 250-1045* | |
| Outlet Housing Direct Replacement | 250-1055 |
Waters 650, 626 PEEK
| Description | OEM Part Number | ASI Part Number |
| Inlet Check Valve Direct Replacement | 02412 | 250-1010* |
| Outlet Cartridge Direct Replacement | 02412 | 250-1015* |
| * If you wish to specify ceramic ball & seat, add a "C" to end of part number. | ||
Waters Alliance® Model 2690/2695/2790/2795 Only
| Description | OEM Part Number | ASI Part Number |
| Inlet/Outlet Cartridge PEEK Direct Replacement |
270941 | 250-1040* |
Waters M45, 45G, 510, 515, 590, 1515, 1525 (Analytical), 6000, 6000A, LCM1
| Description | OEM Part Number | ASI Part Number |
| Inlet Check Valve (Cartridge & Housing) |
033679/700000253 | 250-1120* |
| Inlet Cartridge | 250-1100* | |
| Inlet Housing | 250-1110 | |
| Outlet Check Valve w/Adapter Seal (Cartridge & Housing) |
025216/700000253 | 250-1125* |
| Outlet Cartridge | 250-1105* | |
| Outlet Housing | 250-1115 | |
| Adapter Seal fo Outlet CV 5/Pack | 250-1135-5 | |
| Replacement Filter 5/Pack | 250-1130 |
Waters M501, 600, 600E, 610
| Description | OEM Part Number | ASI Part Number |
| Inlet Check Valve (Cartridge & Housing) |
033679/700000253 | 250-1020* |
| Inlet Cartridge | 250-1100* | |
| Inlet Housing | 250-1110 | |
| Outlet Check Valve w/Adapter Seal (Cartridge & Housing) |
025216/700000253 | 250-1127* |
| Outlet Cartridge | 250-1105* | |
| Outlet Housing | 250-1115 | |
| Adapter Seal fo Outlet CV 5/Pack | 250-1137-5 | |
| Replacement Filter 5/Pack | 250-1130 | |
| * If you wish to specify ceramic ball & seat, add a "C" to end of part number. | ||
Waters Extended Flow 225 µL Head #3
M510 EF, 590 EF, 6000 EF, 6000A EF, LCM1
| Description | OEM Part Number | ASI Part Number |
| Inlet Check Valve (Cartridge & Housing) |
60307 | 250-1920* |
| Inlet Cartridge | 250-1900* | |
| Inlet Housing | 250-1910 | |
| Outlet Check Valve w/Adapter Seal (Cartridge & Housing) |
025216 | 250-1925* |
| Outlet Cartridge | 250-1905* | |
| Outlet Housing | 250-1915 | |
| Adapter Seal fo Outlet CV 5/Pack | 250-1135-5 | |
| Replacement Filter 5/Pack | 250-1130 |
Waters Extended Flow 225 µL Head #3
M600 EF, 600E EF, 610 EF, 650 EF
| Description | OEM Part Number | ASI Part Number |
| Inlet Check Valve (Cartridge & Housing) |
60307 | 250-1920* |
| Inlet Cartridge | 250-1900* | |
| Inlet Housing | 250-1910 | |
| Outlet Check Valve w/Adapter Seal (Cartridge & Housing) |
025216 | 250-1927* |
| Outlet Cartridge | 250-1905* | |
| Outlet Housing | 250-1915 | |
| Adapter Seal fo Outlet CV 5/Pack | 250-1135-5 | |
| Replacement Filter 5/Pack | 250-1130 | |
| * If you wish to specify ceramic ball & seat, add a "C" to end of part number. | ||
ASI Replacement Piston Seals
Waters M45, 45G, 501, 510, 515, 590, 600, 600E, 610, 1515, 1525 (Analytical), 6000, 6000A, LCM1
| Description | OEM Part Number | ASI Part Number | Material |
| Piston Seal w/ Teflon Gasket | 022934/022946 | 200-1202 | UHMW-PE |
| Piston Seal w/ Teflon Gasket 10/Pack | 200-1203 | UHMW-PE | |
| Piston Seal w/ Teflon Gasket | 026613 | 200-1204 | Teflon |
| Piston Seal w/ Teflon Gasket 10/Pack | 200-1205 | Teflon |
Waters Extended Flow 225 mL Head #3
M510 EF, 590 EF, 600 EF, 600E EF, 610 EF, 650 EF, 6000 EF, 6000A EF, LCM1
| Description | OEM Part Number | ASI Part Number | Material |
| Piston Seal | 026644 | 200-1208 | UHMW-PE |
| Piston Seal 10/Pack | 200-1209 | UHMW-PE | |
| Piston Seal | 026644 | 200-1206 | Teflon |
| Piston Seal 10/Pack | 200-1207 | Teflon |
Waters Alliance® Model 2690/95, 2790/95/96
| Description | OEM Part Number | ASI Part Number | Material |
| Piston Seal | 270938 | 200-0210 | UHMW-PE |
| Piston Seal 10/Pack | 200-0215 | UHMW-PE | |
| Seal Wash Piston Seal | 271018 | 200-0220 | UHMW-PE |
| Seal Wash Piston Seal 10/Pack | 200-0225 | UHMW-PE | |
| Seal Wash Face Seal | 271017 | 200-0230 | UHMW-PE |
| Wash Tube Seal | 270940 | 200-0240 | UHMW-PE |
| Pump Head Face Seal | 270939 | 200-0250 | UHMW-PE |
ASI Replacement Pistons
Waters M45, 45G, 501
| Description | OEM Part Number | ASI Part Number | Material |
| Piston | 026524 | 260-1120 | Sapphire Rod |
Waters M510, 590, 600, 600E, 610, 1515, 1525 (Analytical), 6000, 6000A, LCM1
| Description | OEM Part Number | ASI Part Number | Material |
| Piston | 025656 | 260-1125 | Sapphire Rod |
Waters 616, 750, 626
| Description | OEM Part Number | ASI Part Number | Material |
| Piston | 031788 | 260-1240 | Sapphire Rod |
Waters Alliance® Model 2690/95, 2790/95/96
| Description | OEM Part Number | ASI Part Number | Material |
| Piston | 270959 | 260-1245 | Sapphire Rod |
Waters Extended Flow 225 µL Head #3
M510 EF, 590 EF, 600 EF, 600E EF, 610 EF, 650 EF, 6000 EF, 6000A EF, LCM1
| Description | OEM Part Number | ASI Part Number | Material |
| Piston | 060304 | 260-1110 | Sapphire Rod |
ASI Performance Maintenance Kits
Waters 600
| Description | OEM Part Number | ASI Part Number |
| PM Starter Kit 2 Piston Seals 260-1202 2 Inlet Check Valves 250-1120 2 Outlet Check Valves 250-1127 2 Pistons 260-1125 4 SST Solvent Filters 850-1250 included |
052675 | 270-0755 |
| PM Kit 2 Piston Seals 260-1202 2 Inlet Cartridge 250-1100 2 Outlet Cartridge 250-1105 2 Pistons 260-1125 4 SST Solvent Filters 850-1250 included |
052675 | 270-0765 |
Waters Alliance® Model 2690/95
| Description | OEM Part Number | ASI Part Number |
| PM Kit 2 Piston Seals 260-210 4 Pump Head Face Seals 260-0250 2 Inlet/Outlet Cartridges 250-1040 2 Pistons 260-1245 4 SST Solvent Filters 850-1250 included |
270944 | 270-0944 |
