Hydraulic diaphragm metering pump rated at 40 GPH, 350 PSI. TEFC Single Phase 1 HP face mount motor standard. Three Phase or Explosion proof motor options available. 316 Stainless fluid end standard. PVC, Carpenter 20 or Kynar fluid end material options available. Variable Oil By-pass™ stroke adjustment. Ten-turn micrometer dial calibrated to 1% increments. Color-contrasted dial protected from corrosion by clear PVC covering. Stroke mechanism moves only when adjusted, eliminating wear. Hydraulically balanced diaphragm provides extended life. For a Duplex configuration with double output and options not shown here please contact us.