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Varian

ASI Check Valves are a High Performance
Upgrade for Your Varian Pump

Replacement Check Valves

Self-priming With the ASI valve, priming is easy. Open the pump outlet and turn on the pump. Your pump will prime itself, even if the head and intake lines are completely dry. You won't need to use a syringe or draw-off valve to prime your pump.

Rugged Construction The valve will not crush, crack, or leak due to high pressure. We designed the ASI cartridge so that loads are transmitted through the valve casing rather than the seat, as in conventional designs.

Convenient and Economical Cartridge Design When it's time for routine maintenance, you only need to replace the cartridge, not the entire assembly. The ASI cartridge costs no more than most conventional valve rebuild kits, and you won't spend time chasing ruby balls all over the lab bench.

Pre-tested Every ASI valve is tested prior to shipping to ensure it passes a stringent set of performance specifications.

Click here for more information about ASI check valves.

Replacement Piston Seals and Pistons

ASI pump seals and pistons have been developed to reduce pump downtime. Our UHMW-PE piston seal material is compounded with other proprietary polymers to provide lower friction and better solvent resistance than pure UHMW-PE. It generally provides much longer service life than Teflon and generates less wear material, and we recommend it for most applications. Our Teflon piston seal has a proprietary additive to increase resistance to cold flow, and improve wear characteristics. Teflon is inert to any HPLC mobile phase.

Click here for a detailed guide to selecting the best material.

ASI Self-priming Check Valves

Varian 2010, 2510

Description OEM Part Number ASI Part Number
Inlet Check Valve
(Cartridge & Housing)
03-997261-09 250-1580*
Inlet Cartridge   250-1560*
Inlet Housing   250-1570
Outlet Check Valve
(Cartridge & Housing)
03-997261-10 250-1585*
Outlet Cartridge   250-1565*
Outlet Housing   250-1575

Varian 5000, 5020, 5060

Description OEM Part Number ASI Part Number
Outlet Check Valve
(Cartridge & Housing)
03-905201-00 250-1355*
Outlet Cartridge   250-1345*
Outlet Housing   250-1350
Replacement Filter 5/Pack   250-1130*

Varian 9010, 9012, 9020, 220, 230, 240

Description OEM Part Number ASI Part Number
Outlet Check Valve
(Cartridge & Housing)
03-919465-90 250-1555*
Outlet Cartridge   250-1535*
Outlet Housing   250-1545
Replacement Filter 5/Pack   250-1220*

Varian PrepStar SD-1

Description OEM Part Number ASI Part Number
Inlet/Outlet Cartridge
500/800 mL/min. Head
R007105686/87 250-1980*

Varian ProStar 210,218/Rainin SD200/300

Description OEM Part Number ASI Part Number
Inlet Check Valve
5, 10 mL/min.
(Cartridge & Housing)
R007101616 250-1610*
Inlet Check Valve
25 mL/min.
(Cartridge & Housing)
 R007101616 250-1640*
Inlet Cartridge
5, 10 mL/min.
  250-1590
Inlet Cartridge
25 mL/min.
  250-1620*
Inlet Housing
5, 10, and 25 mL/min.
  250-1600*
Outlet Check Valve
5, 10 mL/min.
(Cartridge & Housing)
R007101617 250-1615
Outlet Check Valve
25 mL/min.
(Cartridge & Housing)
R007101617 250-1645*
Outlet Cartridge
5, 10 mL/min.
  250-1595*
Outlet Cartridge
25 mL/min.
  250-1625*
Outlet Housing
5, 10, and 25 mL/min.
  250-1605*

* Our standard ball & seat is sapphire & ruby. If you wish to specify ceramic ball & seat, add a "C" to end of part number.

ASI Replacement Piston Seals

Varian 2010, 2510

Description OEM Part Number ASI Part Number Material
Piston Seal 03-997261-37 200-1271 UHMW-PE
Piston Seal 10/Pack   200-1276 UHMW-PE

Varian 5000, 5020, 5060

Description OEM Part Number ASI Part Number Material
Piston Seal
w Backup washer
27-459633-00 200-1270 UHMW-PE
Piston Seal 10/Pack
w Backup Washer
  200-1275 UHMW-PE

Varian 9010, 9012, 9020, 220, 230, 240

Description OEM Part Number ASI Part Number Material
Piston Seal 03-919397-00 200-1278 UHMW-PE
Piston Seal 10/Pack   200-1279 UHMW-PE

Varian ProStar 210,218/Rainin SD200/SD300

Description OEM Part Number ASI Part Number Material
Piston Seal 5 mL/min. Rainin: R007101634 200-1262 UHMW-PE
Piston Seal 5 mL/min 10/Pack   200-1263 UHMW-PE
Piston Seal 10 mL/min. Rainin: R007101637 200-1264 UHMW-PE
Piston Seal 10 mL/min 10/Pack   200-1265 UHMW-PE
Piston Seal 25 mL/min. Rainin: R007101643 200-1266 UHMW-PE
Piston Seal 25 mL/min 10/Pack   200-1267 UHMW-PE

ASI Replacement Pistons

Varian 2010, 2510

Description OEM Part Number ASI Part Number Material
Piston 03-997261-08 260-1171 Sapphire Rod

Varian 5000, 5020, 5060

Description OEM Part Number ASI Part Number Material
Piston 03-905337-00 260-1170 Sapphire Rod

Varian 9010, 9012, 9020, 220, 230, 240

Description OEM Part Number ASI Part Number Material
Piston 03-919180-00 260-1175 Sapphire Rod

Varian ProStar 210,218/Rainin SD200/300

Description OEM Part Number ASI Part Number Material
Piston for 5 mL/min. Rainin: R007101657 260-1176 Sapphire Rod
Piston for 10 mL/min. Rainin: R007101658 260-1177 Sapphire Rod

 

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