HDB3 / HDB4 Sandpiper Metallic Air Operated Double Diaphragm Heavy Duty Ball Metallic Pump

HDB Metallic air operated double diaphragm pumps are ideal for thin to highly viscous and small solids-laden fluids, while providing excellent suction lift capability and exclusive variable porting options (side, top, bottom and dual). HDB pumps are thick wall constructed of Sand Casted Aluminum, Cast Iron, Stainless Steel or Alloy C with elastomer, TPE (thermal plastic elastomers) and PTFE options in diaphragms and check valves. HDB pumps are enhanced with an extended wear package.


Port Size
3″ 150# ANSI Flange
4″ 150# ANSI Flange
0 to 260 gpm (988 lpm)
Air Distribution Valve
No-lube, no-stall design
Up to .875″ (22.2 mm)
Heads Up To
125 psi or 289 ft. of water (8.6 bar or 88 meters)
1.8 gallons (6.8 liters)
Max Operating Pressure
125 psi (8.6 bar)
Shipping Weight
Cast Iron: 460 lbs. (207 kg)
Stainless Steel: 480 lbs. (216 kg)

Click here for HDB Metallic Data Sheet.