Thayer Volumetric Feeders

Thayer Scale manufactures durable and long-lasting volumetric feeders specifically designed to feed difficult powders such as TiO2, talc and calcium carbonate, and to address the flooding and bridging problems posed by many other powders.

Our innovative and high-quality volumetric feeders offer:

  • A unique feeder trough that deaerates and confines powder at the initial fill cycle to prevent flooding
  • An independently-driven agitator that conditions the material and introduces it to the feed screw with a consistent density
  • Feeders that disassemble easily (tool-free) for thorough cleaning, eliminating contamination problems which often occur when changing materials
  • Heavy-gauge 304 stainless steel as a standard offering (316 stainless steel is also available)
  • Customized screw lengths and special designs to facilitate operation over a wide operating range with both heavy- and light-density materials

Showing all 4 results

MSF Volumetric Screw Feeder

THAYER Model No.
MSF
Approx Feed Rate Range
(lbs/hr) based on 50 lb/ft³)
0.25 – 60
Standard Hopper Extension Capacity
*(liquid ft³)
1.0 – 3.0
Trough Capacity
*(liquid ft³)
0.5
Available Screw Sizes (in)
0.375″ – 0.5″ – 0.625″ – 1″ – 1.5″ – 2″
Typical Materials Handled
CANDLE WAX, RICE POWDER, SALT, FLOUR, LITHIUM ION POWDER, GROUND BIOMASS, VITAMIN ADDITIVE, SEASONING
Volumetric Feeder for Powder | PFM-S-Volumetric-Feeder

Powder Feeder™ Model PFM-S

THAYER Model No.
PFM-S POWDER™ FEEDER
Approx Feed Rate Range
(lbs/hr) based on 50 lb/ft3)
20 – 1,250
Standard Hopper Extension Capacity
*(liquid ft³)
1.0 – 9.75
Trough Capacity
*(liquid ft³)
1
Available Screw Sizes (in)
1″ – 1.5″ – 2″
Typical Materials Handled
GRAPHITE POWDER, ZINC OXIDE, KAOLIN CLAY, GUAR GUM, PLASTIC ADDITIVE, QUICK LIME, PIGMENT, COPPER POWDER, RUBBER GRANULES, TSP, WHEY POWDER

Powder Feeder™ Model PF-S-4

THAYER Model No.
PF-S-4 POWDER™ FEEDER
Approx Feed Rate Range
(lbs/hr) based on 50 lb/ft³)
20 – 10,000
Standard Hopper Extension Capacity
*(liquid ft³)
1.0 – 9.75
Trough Capacity
*(liquid ft³)
2.5
Available Screw Sizes (in)
1″ – 1.5″ – 2″ – 3″ – 4″
Typical Materials Handled
DIATOMACEOUS EARTH, POWDERED MILK ADDITIVE, CALCIUM CARBONATE, SALT,  SPICE, ADDITIVE POWDERS, TiO2, STEARATE, BORAX, MICROCEL

Powder Feeder™ Model PF-S-6

THAYER Model No.
PF-S-6 POWDER™ FEEDER
Approx Feed Rate Range
(lbs/hr) based on 50 lb/ft³)
3,700 – 30,000
Standard Hopper Extension Capacity
*(liquid ft³)
1.0 – 25
Trough Capacity
*(liquid ft³)
2.5
Available Screw Sizes (in)
3″ – 4″ -6″
Typical Materials Handled
COCOA POWDER, FLOUR, RICE, IMPACT MODIFIER, PP PELLETS, CRUMB RUBBER, SUGAR, ADVAWAX, CALCIUM STEARATE, ALMONDS, TOFFEE CHIPS