AF™ single-stage "A" series vacuum pumps are simplistic in design, rugged in construction and built to run in the most severe of industrial conditions. With no metal-to-metal contact, it is not unusual for these pumps to run in 24/7 operation for years without maintenance.
AF™ vacuum pumps feature our "abuser-friendly" Fluid-Vac® axial flow technology, allowing the pump to start in even a flooded condition. These compact vacuum pumps outperform any comparable vacuum pump on the market. Available in closed coupled configuration.
Show more about how AF™ Liquid Ring Pumps work
AF™ series vacuum pumps consist of a shrouded motor rotating freely within an eccentric casing. Centrifugal force acting on liquid within the pump causes the liquid to form a ring inside the casing. A fixed port cylinder concentric with the rotor directs the gas into the suction ports.
Gas is trapped between the blades by the liquid pistons formed by the centrigual force as the liquid receds from the port cylinder. It is rapped at the point of maximum eccentricity and is then compressed by the liquid ring as it is forced radially inward toward the central port cylinder. After each revolution the compressed gas and accompanying liquid are discharged.
During the pumping cycle the gas is in intimate contact with the sealing liquid and compression is nearly isothermal. When handling saturated vapor-gas mixtures the liquid ring acts as a condenser greatly increasing the effective capacity of the pump.
Specifications
Features
Applications
Model Selection
Warranty
Documents
Performance Specifications:
Single Stage Design
Capacity: 5 - 600 CFM (8.5 - 1020 m3/h)
Maximum Vacuum: 28.3"Hg (40 Torr)
Material Specifications:
Casing, Cover, Rotor, Port Cylinder:
All Bronze
Cast Iron, Bronze Fitted
All Stainless Steel (A10 – A20)
All Ni-Resist (A20 only)
Mechanical Seals:
BUNA — Optional
Viton™ — Cast Iron Bronze Fitted, All Bronze,
Viton™ — Ni Resist, Stainless Steel
EPR — Optional
Kalrez™ — Optional
Optional Material:
Alloy 20
Hastelloy™
Drive Options:
Pedestal Frame
Close-coupled motor
Stocked Motors:
TEFC – 3Ø
TEFC – 1Ø
Optional Motors:
XP Class I, GpD – 3Ø — Optional
XP Class I, GpD – 1Ø — Optional
No contact between operating components in the casing
Flat power curve over entire vacuum range prevents motor overload
Reduced stress on motor shaft and bearingsIncreased water handling capability prevents heat build-up, extends life of mechanical seals
Compact, close-coupled design eliminates need for interstage
manifold or motor alignment
Shrouded rotor increases pumping efficiency for high vacuum
and low water consumption
Fast delivery on standard materials and local support
Manufactured in Springfield, Missouri USA
Chemical and Pharmaceutical Processing
Soil Vapor Extraction
Deaeration
Extruders
Central Vacuum Systems
Filtration
Solvent Distillation/Vapor Recovery
Sterilization
Autoclaves
Degasifiers
Evaporators
The following table will help you select which model can best fit your application:
Model
CFM / m³/h
HP / kW
A5
10/17
1/0.75
A10
16/27
1.5/1.1
A15
22/37
2/1.5
A20
35/59
3/2.2
A75
80/136
5/3.7
A100
115/195
7.5/5.5
A130
150/255
10/7.5
A200
220/374
15/11
A300
300/510
20/15
A600
625/1062
40/30
Every Tuthill Vacuum Pump is backed by the Tuthill Vacuum & Blower Systems limited warranty:
Type of Application
Atmospheric Air or Process Air without Liquids Present:
Process Gases Other than Air, or Any Liquid Injected Application:
24 months from date of shipment, or 18 months after initial startup date, whichever occurs first.
18 months from date of shipment, or 12 months after initial startup date, whichever occurs first
