38 mm (1-1/2") Wilden PS4 Pro-Flo SHIFT Stallion Series Clamped Metal AODD Pumps
Wilden Stallion Series Air-Operated Double-Diaphragm (AODD) Pumps are ideally suited for rugged mining applications thanks to their unique ability to handle solid-laden mining slurries with ease. Furthering the Stallion Series pump’s ability to handle the toughest mining applications is a robust design featuring a large internal clearance and flow-through path for large-solids passage that prevents the pump from clogging. The Stallion Series is also designed with a polyurethane screen base at its inlet to provide additional durability.
Stallion Series technology incorporates an altered ball/seat check-valve assembly to allow for solids passage. Its polyurethane screen base at the inlet gives added durability.
Features & Benefits of Wilden PS4 Pro-Flo SHIFT Stallion AODD Pumps
- Clamped design with handles for lightweight portability
- Large internal clearances due to modified ball, seats, diaphragms and shafts to handle solid-laden slurries
- Polyurethane screen base to act as an initial filter to keep larger solids from damaging the pump
- Powered by Pro-Flo SHIFT Air Distribution System (ADS)
| Air Inlet | 3/4" FNPT |
| Liquid Inlet | 38 mm (1-1/2") |
| Liquid Discharge | 38 mm (1-1/4'') |
| Connection Type | NPT/BSPT (Threaded) |
| Max Suction Lift Capability | EZ-Install TPE – 5.7 m (18.7') Dry, 9.0 m (29.5') Wet |
| Max Flow Rate | EZ-Install TPE – 307 lpm (81 gpm) |
| Max Pressure | 8.6 bar (125 psi) |
| Max Diameter Solids | 13 mm (1/2'') |
| Displacement Per Stroke* | EZ-Install – 0.8 L (0.22 gal) * 1 cycle = 2 strokes |
Wilden PS4 Pro-Flo SHIFT Stallion AODD Pump Performance & Specifications
Dimensions

Flow Curve - EZ-Install TPE-Fitted

Wetted Housings
| Material | Ship Weight |
| Aluminum | 22 kg (49 lb) |
| Ductile Iron | 30 kg (66 lb) |
Non-Wetted Housings
| Description | Material |
| Center Section | Aluminum |
| Air Valve | Aluminum |
| Air Chamber | Aluminum |
Elastomer Options
| Material | Temperature Limits |
| Buna-N | 12°C to 82°C (10°F to 180°F) |
| EPDM | -51°C to 138°C (-60°F to 280°F) |
| FKM | -40°C to 177°C (-40°F to 350°F) |
| Geolast® | -40°C to 82°C (-40°F to 180°F) |
| Neoprene | -18°C to 93°C (0°F to 200°F) |
| Polyurethane | -12°C to 66°C (10°F to 150°F) |
| Will-Flex™ | -40°C to 107°C (-40°F to 225°F) |
