A PTFE Lined Pump is a chemical-resistant pump where the internal surfaces (casing, impeller, back plate) are fully lined with PTFE (Teflon).
These pumps are used for highly corrosive, acidic, toxic, or hazardous liquids that cannot be handled by metal pumps.
Features :
Type: AODD stands for Air Operated Double Diaphragm pump. These pumps are powered by compressed air and are commonly used for transferring various types of fluids, including abrasive, viscous, and shear-sensitive liquids.
TFE-lined pumps come in standard chemical pump sizes:
Typical Size Range
Inlet/Outlet Sizes:
25 mm (1 inch)
40 mm (1.5 inch)
50 mm (2 inch)
65 mm (2.5 inch)
80 mm (3 inch)
100 mm (4 inch)
Flow Size
Small pumps → 5 m³/hr
Medium → 10–50 m³/hr
Large → 50–150 m³/hr
Construction:Working Principle
PTFE lined pumps are centrifugal chemical pumps with all internal surfaces coated with PTFE to protect from corrosion.
Key Construction Features
PTFE lined casing
PTFE or PFA impeller
Heavy-duty ductile iron/steel outer body
Mechanical seal designed for corrosive liquids
Back pull-out design for easy maintenance
Corrosion-proof wetted parts
Capacity: Flow Capacity
5 m³/hr to 150 m³/hr
Head / Pressure
10 meters to 80 meters
Max pressure: 10–16 bar
Materials: In PTFE Lined pump are use Mechanical Seal Faces like Carbon, Ceramic, Silicon Carbide, Gaskets/O-Rings PTFE Viton EPDM
Applications:PTFE lined pumps are used wherever liquids are too corrosive for metal pumps.like Chemical & Acid Industries, Sulfuric acid (H₂SO₄), Nitric acid (HNO₃), Hydrochloric acid (HCl) , Caustic soda, Chlorine solutions, Sodium hypochlorite, Phosphoric acid
