

Graco DB4811 Pump 1590S PA01AS1FKPTPT is a stainless steel air‑operated diaphragm pump with FKM balls and PTFE diaphragms engineered for chemical‑resistant fluid transfer.
Graco DB4811 Pump 1590S PA01AS1FKPTPT is a heavy‑duty stainless steel air‑operated diaphragm pump designed for demanding industrial and chemical fluid handling. It features a stainless steel pump body and seats, 1‑1/2″ NPT inlet and outlet, FKM balls, and PTFE diaphragms to provide enhanced chemical resistance. The compressed air driven design ensures reliable operation in environments where electrical power is restricted.
| Part Number | DB4811 |
|---|---|
| Pump Type | Air‑Operated Double Diaphragm |
| Body Material | Stainless Steel |
| Seat Material | Stainless Steel |
| Diaphragm Material | PTFE |
| Ball Material | FKM Elastomer |
| Fluid Inlet/Outlet | 1‑1/2″ NPT |
| Maximum Pressure | 120 psi |
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