Description
The Wilden® PS1520/PS1530 Pro-Flo® SHIFT Series bolted metal AODD pump — also known as the FIT pump — sets a new benchmark for air-operated double-diaphragm pump performance and energy efficiency. Its enhanced flow path reduces internal friction for improved flow rates and longer diaphragm life, while its bolted construction ensures superior containment. The PS1520/PS1530 shares the exact bolt-down footprint and inlet/discharge connections as Wilden clamped pumps, enabling direct drop-in replacement without piping modifications.
Features
- Pro-Flo® SHIFT ADS: Air control spool automatically optimises air consumption, eliminating overfilling of the air chamber — delivers up to 60% reduction in air consumption and 34% greater flow rates vs. competing AODD technologies; costs 50% less than electronically actuated ADS
- Bolted construction for superior containment and the longest Mean Time Between Repair (MTBR)
- Enhanced flow path design — flow rates up to 35% greater than competitive models; improved diaphragm life
- Mechanically actuated SHIFT ADS — no electronic parts; plug-and-play; submersible without additional configuration
- NPT/BSPT threaded liquid connections (PS1520) or DIN/ANSI flanged connections without welding or nipples (PS1530)
- Large-solids passage up to 12.7 mm (1/2″”)
- High suction lift capability — up to 9.7 m (31.8′) wet
- Flexible internal manifold adjustment
- Portable and submersible; single-point exhaust option available
- Increased on/off reliability
- Largest chemical compatibility range — nine elastomer options
Performance
- Max Flow Rate: Rubber/EZ-Install TPE — 1,026 lpm (271 gpm); Full-Stroke PTFE — 992 lpm (262 gpm); Full-Stroke PTFE (Ductile Iron) — 874 lpm (231 gpm)
- Max Pressure: 8.6 bar (125 psi)
- Max Diameter Solids: 12.7 mm (1/2″”)
- Max Suction Lift (Dry): Rubber — 7.2 m (23.8′); EZ-Install TPE — 6.4 m (21.1′); Full-Stroke PTFE — 6.2 m (20.2′); Full-Stroke PTFE (Ductile Iron) — 5.9 m (19.5′)
- Max Suction Lift (Wet): Rubber/EZ-Install TPE/Ductile Iron PTFE — 9.7 m (31.7’–31.8′); Full-Stroke PTFE — 8.6 m (28.4′)
- Displacement per Stroke: Rubber — 5.1 L (1.35 gal); EZ-Install TPE — 5.4 L (1.43 gal); Full-Stroke PTFE — 5.0 L (1.32 gal); Full-Stroke PTFE (Ductile Iron) — 4.8 L (1.26 gal)
Options
- Connection type: NPT/BSPT threaded (PS1520); DIN/ANSI flanged (PS1530)
- Wetted housing materials: Aluminum, Stainless Steel, Ductile Iron, Alloy C (PS1530 only)
- Diaphragm/elastomer options: Rubber (Buna-N, EPDM, FKM, Geolast®, Neoprene, Polyurethane, Saniflex™, Wil-Flex™); PTFE; EZ-Install TPE
- Non-wetted materials: Center section — Aluminum, Polypropylene, or Stainless Steel; Air valve — Aluminum, Polypropylene, Anodized Aluminum, or Stainless Steel; Air chamber — Aluminum or Stainless Steel
Applications
- Chemical transfer and process fluid handling
- Paints, coatings, and inks
- Mining and mineral processing
- Oil and gas production and transfer
- Water and wastewater treatment
- Food and beverage processing
- Pharmaceutical and semiconductor manufacturing
- Liquid terminals and tank transfer






