Poly Diaphragm Pump DP-687-P

6 diaphragms. Through Shaft 1-3/8″ 6-spline opposite end. Negative pressure – max: 4.9 ft; intermittent: 9.8 ft.



  • The heads are designed with a patented technology that includes an aluminum die-cast core inside a polypropylene structure offering superior strength.
  • Washers and diaphragm bolts are in 316 stainless steel, an exclusive feature.
  • Die cast crankcase incorporating a new cooling system.
  • New chemically resistant diaphragm material pre-deformed to reduce the amount of deflection, increasing diaphragm life. The diaphragm material is compatible with most of the corrosive chemicals on the market today.
  • A short crankshaft stroke means the longest life possible.
  • New connecting rods in special bronze alloy offer economical and trouble free service.
  • 316 stainless steel inlet and outlet check valves.


ModelMax Flow GPMMax Pres. PSIMax Speed RPMMax Power HPMax Temp. ° FSuct. Hose Diam.Disch. Hose Diam.Weight LBLube Oil
DP-687-P68.72185509.4140° F2″ Hose1-1/4″ NPT85.830 SAE


  • SC Series: Spray Guns and Lances.
  • SC-2660-3: Pressure Regulator.