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Bronze rotary gear pump head with NPT ports

Dayton

Dayton 4KHG8 Rotary Gear Pump Head Bronze 3/4 in 100 psi

SKU CH-8EWW-B4JQY MPN 4KHG8

Bronze rotary gear pump head delivers 19.8 gpm at 100 psi with PTFE packing seal

  • TypeDrain Components
  • Bronze body resists corrosion for long service life
  • Rotary gear design delivers steady 19.8 gpm flow at 100 psi
  • Handles fluids up to 500 SUS viscosity across -20 to 210 °F
  • 3/4 in NPT connections simplify plumbing integration
  • Packing seal with PTFE material ensures reliable sealing up to 100 psi

Rotary Gear Pump Head Bronze

The Dayton 4KHG8 is a bronze rotary gear pump head designed for fluid transfer applications requiring up to 100 psi operating pressure. It suits maintenance teams and system integrators who need a compact, pack-sealed head with a 3/4 inch NPT connection and 5/8 inch shaft diameter.

Thermals and Power Draw

The unit operates between -20 and 210 degrees Fahrenheit and handles fluids up to 500 SUS viscosity with a maximum suction lift of 15.2 feet. At full 100 psi pressure it delivers 19.8 gallons per minute while requiring a 2 horsepower motor, so heat output and energy use scale directly with the driven load.

Build Integration

The head mounts to a compatible motor via the 5/8 inch shaft and 3 5/8 inch shaft length, using NPT threaded ports for inline plumbing. Bronze construction and PTFE packing resist corrosion in aggressive fluids, freeing the builder from specifying separate seal kits or exotic alloys for the wetted path.

Highlights

  • Bronze body resists corrosion for long service life
  • Rotary gear design delivers steady 19.8 gpm flow at 100 psi
  • Handles fluids up to 500 SUS viscosity across -20 to 210 °F
  • 3/4 in NPT connections simplify plumbing integration
  • Packing seal with PTFE material ensures reliable sealing up to 100 psi

Specifications

TypeDrain Components
BrandDayton
Model4KHG8

Questions about this item

How do I install the 3/4 in NPT connections on the bronze pump head, and what step is often missed?

Thread the 3/4 in NPT ports into matching pipe fittings using sealant rated for 100 psi and 210 °F; the step often missed is aligning the 5/8 in shaft with the motor coupling before tightening the flange bolts.

What maintenance will the PTFE packing seal need later?

The PTFE packing seal should be inspected periodically and re-torqued or replaced if leakage appears at the 5/8 in shaft, especially after prolonged runs at 100 psi and 210 °F.

What limit appears first during sustained operation at 100 psi?

The 210 °F maximum operating temperature is typically the first limit reached under continuous 100 psi duty, so monitor fluid temperature and provide cooling if it approaches that value.

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