The ARO 666120-444-C is a 1-inch Pro Series metallic air-operated double-diaphragm pump with BSP connections and a published flow rate of 35 GPM (133 LPM). It has an aluminium centre section and uses PTFE diaphragms, PTFE balls, and PVDF seats.
ARO 666120-444-C configuration
- Pump family: ARO 1-inch Pro Series Metallic
- Port size: 1 in
- Connection: BSP
- Centre section: Aluminium
- Diaphragms: PTFE
- Balls: PTFE
- Seats: PVDF
- Air-section service kit: 637118-C
- Fluid-section service kit: 637119-44
Pro Series pump features
- Mobility: Compact, rugged design for easy movement.
- Efficiency: Motor design optimised for air efficiency.
- Reliability: ARO’s patented Unbalanced air valve supports no-stall operation.
- Versatility: Metallic material options are available for demanding chemical applications.
- Leak resistance: Bolted construction supports leak-free fluid handling.
- Serviceability: Easy access to ball checks and fluid caps for maintenance and repairs.
Compatible accessories
- 66073-2: Air-line connection kit containing a piggyback filter/regulator, pipe nipple and 5-foot hose section.
- 66100: Wall mount.
- 66975: Cycle counter kit.

