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Silver metal air drum pump with hose and bung adapter

Westward

Westward 3APF2 Air Drum Pump 3.7 gpm 345 psi 3:1

SKU CH-7JG3-JA9PK MPN 3APF2

Air-operated drum pump delivers 3.7 gpm at up to 345 psi with a 3:1 pressure ratio

  • Product typeDrain Components
  • Delivers 3.7 gpm flow rate for fast fluid transfer
  • Reaches 345 psi maximum pressure for demanding applications
  • 3:1 pressure ratio multiplies inlet air pressure efficiently
  • Operates at 81 dB noise level for quieter workshop use
  • Handles fluids up to 130 SUS viscosity for versatile compatibility

High-pressure air drum pump

The Westward 3APF2 is an air-operated drum pump designed for fluid transfer from standard drums. It delivers a 3:1 pressure ratio to reach 345 psi output pressure at 3.7 gpm flow. The unit includes a bung adapter for direct drum mounting.

For thick-fluid transfer, not thin solvents

Suits workshops moving viscous liquids up to 130 SUS such as oils or lubricants. The 81 dB noise level and 61 gpm air consumption require a robust compressed-air supply. Buyers needing low-viscosity solvent transfer or quieter electric operation should look at alternative pump types.

3:1 pressure ratio defines output force

The fixed 3:1 ratio multiplies inlet air pressure to determine the 345 psi maximum discharge pressure. Verify your available air supply stays within the 115 psi limit to match this specification.

How it compares

Measured against everything we stock in Drain Stoppers, Strainers & Traps, at today’s prices. Recalculated every night.

Price $688.99
Pricier than about 91% of the 4,240 comparable items (median $31.99).

Specifications

Product
Brand nameWestward
Model name3APF2
Product typeDrain Components

Questions about this item

What does the 3.7 gpm flow rate mean when I am actually pumping fluid?

The pump can move up to 3.7 gallons of liquid per minute when supplied with adequate air pressure, so a standard drum will empty in a few minutes depending on viscosity and hose length.

How does the 115 psi maximum air pressure limit what the pump can do?

The 115 psi air supply ceiling caps the fluid outlet pressure at the rated 345 psi through the 3:1 ratio; exceeding 115 psi air input would over-pressurise the system.

What does the pump need to mount on a drum?

A bung adapter is included, allowing the pump to thread directly into the standard 2-inch opening of a typical drum.

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