Metal Diaphragm Pumps

SK50

  • Air inlet: 3/4″
  • Fluid inlet: 2″
  • Fluid outlet: 2″
  • flow rate: 651 L/min (172 GPM)
  • Displacement per stroke: 5.3 L (1.4 gal)
  • pressure: 8.6 bar (125 psi)
  • solids passage: 9 mm (3/8″)
  • suction lift:
  • Dry: 6 m (20 ft)
  • Wet: 7.5 m (25 ft)
  • Air supply pressure: 1.4 to 8.6 bar (20 to 130 psi)
  • temperature: 135 °C (275 °F)
DOWNLOAD CATALOG
Wetted Materials
  • Body and chamber: Aluminum, Cast Steel, Cast Iron, 316 Stainless Steel
  • Diaphragms: Buna-N, Neoprene, PTFE (Teflon®), Santoprene, Viton
  • Balls: Buna-N, Neoprene, PTFE (Teflon®), Santoprene, Viton, Stainless Steel
  • Seats: Neoprene, Polypropylene, PTFE (Teflon®), Santoprene, Stainless Steel
Non-Wetted Materials
  • Resin-coated aluminum
  • Nickel-plated aluminum
  • PTFE (Teflon®)-coated aluminum
  • Stainless steel
Performance Curve
Dimensional Drawing
Advantages of Air-Operated Double Diaphragm Pumps
  • Can handle fluids that are:
    • Laden with large solids
    • High or low viscosity
    • Hazardous or abrasive
  • Self-priming
  • Ideal for maintaining system pressure without stressing its components
  • No mechanical seals, gaskets or packing
  • Can run dry without damage
  • Easily adjustable flow rate and pressure
  • Safe discharge pressure: no relief valve required
  • Lightweight, compact and easy to move
Model History

SK50/3AAA/NEPN/0B0
SK50/3AAA/EEPE/0B0
SK50/3AAA/BNPB/0B0
SK50/3AAA/VTVV/0B0
SK50/3AAA/NTTT/0B0
SK50/3AAA/NEPN/JF0
SK50/3AAA/EEPE/JF0
SK50/3AAA/BNPB/JF0
SK50/3AAA/VTPV/JF0
SK50/3AAA/NTTT/JF0

SK50/3IAA/NEPN/0B0
SK50/3IAA/EEPE/0B0
SK50/3IAA/BNPB/0B0
SK50/3IAA/VTPV/0B0
SK50/3IAA/NTTT/0B0
SK50/3 IAA/NEPN/JF0
SK50/3IAA/EEPE/JF0
SK50/3IAA/BNPB/JF0
SK50/3IAA/VTPV/JF0
SK50/3IAA/NTTT/JF0

SK50/3XAA/NE-N/0B0
SK50/3XAA/EEPE/0B0
SK50/3XAA/BNPB/0B0
SK50/3XAA/VTVV/0B0
SK50/3XAA/NTTT/0B0
SK50/3XAA/NEPN/JF0
SK50/3XAA/EEPE/JF0
SK50/3XAA/BNPB/JF0
SK50/3XAA/VTPV/JF0
SK50/3XAA/NTTT/JF0