
ARO PD05R-AAS-STT-B Double Diaphragm Pump With PTFE Balls
1/2 in. NPTF Compact Series pump, 13.0 gpm, with PTFE/Santoprene diaphragms and 316 SS seats
AAS-code Compact Series pump for 1/2 in. NPTF lines. It moves up to 13.0 gpm using PTFE balls and PTFE/Santoprene diaphragms.
Built around a 1/2 in. NPTF connection, the ARO PD05R-AAS-STT-B is an air-driven double diaphragm pump in the Compact Series. The AAS center code separates it from other STT builds in the family. The wetted valve set pairs 316 stainless steel seats with Teflon/PTFE balls, and each diaphragm is PTFE backed by Santoprene.
Expect up to 13.0 gpm (49.2 lpm) of flow, with air and fluid pressure each limited to 100 psi (6.9 bar). Particles up to 3/32 in. can pass. Hardware is stainless steel, and the noise figure is 71.1 dB.
This pump is listed as a component of the ARO DAB05-ASTT-2-A double diaphragm pump. If you are servicing that unit, check its parts list to confirm this is the section it calls for. A part list, technical specification and operators manual are on file for this model.
Key Specifications
- Flow at full air: 13.0 gpm (49.2 lpm)
- Max air inlet and fluid pressure: 100 psi (6.9 bar)
- Ball and seat set: PTFE on 316 stainless steel
- Diaphragm type: PTFE with Santoprene backing
- Solids passage: 3/32 in.
Typical Applications
- Transfer where the fluid contacts PTFE and stainless rather than rubber balls
- Low-volume dosing and day-tank filling
- Lines plumbed with 1/2 in. NPTF fittings
Service Parts for This Pump
The parts below are drawn from this model's service list:
- ARO 637427-TT PTFE diaphragm service kit
- ARO 95978 center body
- ARO 97111 pin for the actuator
- ARO 637438 exhaust kit, ported
- ARO 94871 flange bolt, 1/4 in.-20 x 5-3/4 in.
- ARO 96383 U-cup seal, 1/8 in. x 1.427 in. OD
For the remaining parts, see the full list of 41 items for the PD05R-AAS-STT-B.
| Brand | ARO |
|---|---|
| Product Type | Pump |
| Product Series | Compact Series |
| Material - Diaphragm | PTFE/Santoprene |
| Application | Air Operated Pump |
| Inlet/Outlet Connection Type | NPTF |
| Outlet Size | 1/2 in |
| Solids Handling | 3/32 in |
| Material - Balls | Teflon/PTFE |
| Material - Seats | 316 Stainless Steel |
| Max Air Inlet Pressure | 100 psi (6.9 bar) |
| Max Flow | 13.0 gpm (49.2 lpm) |
| Max Fluid Pressure | 100 psi (6.9 bar) |
| Max Temperature | 350°F (176.7°C) |
| Noise Level | 71.1 dB |
| Material - Hardware | Stainless Steel |
| Displacement | Positive Displacement |
