Material Compatibility for All Applications

VersaGrad™ pumps are available in 316 stainless steel or biocompatible PEEK™ (polyetherether ketone) for metal-sensitive applications.

Reduced Maintenance

All pumps include automatic piston wash to dramatically extend the life of the high-pressure seal. Each piston stroke actively flushes the back of the primary seal with a flushing solution. The result is less down-time and reduced operating expenses.

Accuracy Over Entire Pressure Range

VersaGrad pumps are designed with precision mechanism and fluid-path components and complex control algorithms to provide accurate flow regardless of flow, backpressure, or solvent.

Performance Beyond Its Price

Simplicity of design and proven drive technology allow for superior performance at a reasonable price. Reliable operation is guaranteed long into the future with a 3-year warranty.

Easy Control

Standard controls include RS-232 serial communication ports (for complete control and pump status monitoring) and Run/Stop inputs. ​

SSI offers several single-piston and dual-piston pumps built on the Versagrad™ pump platform. Consult the chart below to find the pumps that best suit your needs:

Single Piston Binary Gradient Pumps Part No. Flow Range Max Pressure
Series III, 5mL, PEEK VG305PFT01 0.001 - 5.0 mL/min 5,000 PSI
Series III, 5mL, Stainless Steel VG305SFT01 0.001 - 5.0 mL/min 6,000 PSI
Series III, 10mL, PEEK VG310PFT01 0.01 - 10.0 mL/min 5,000 PSI
Series III, 10mL, Stainless Steel VG310SFT01 0.01 - 10.0 mL/min 6,000 PSI
Series III, 40mL, PEEK VG340PFT01 0.1 - 40.0 mL/min 1,600 PSI
Series III, 40mL, Stainless Steel VG340SFT01 0.1 - 40.0 mL/min 1,600 PSI
Dual Piston Binary Gradient Pumps Part No. Flow Range Max Pressure
Series 1500, 12mL, PEEK VGD05PFT01 0.01 - 12 mL/min 5,000 PSI
Series 1500, 12mL, Stainless Steel VGD05SFT01 0.01 - 12 mL/min 6,000 PSI
Prep 36, 36 mL, PEEK VGP15PFT01 0.01 - 36 mL/min 5,000 PSI
Prep 36, 36 mL, Stainless Steel VGP15SFT01 0.01 - 36 mL/min 6,000 PSI
Prep 100, 100 mL, PEEK VGP40PFT01 0.1 - 100 mL/min 4,000 PSI
Prep 100, 100 mL, Stainless Steel VGP40SFT01 0.1 - 100 mL/min 4,000 PSI
UHP, 5 mL, Stainless Steel VGU05SFT01 0.001 - 5 mL/min 18,000 PSI​