Davey 48503 Shallow / Deep Well Prime Jet Pump




A rugged single-stage jet-assisted pump, the Prime Jet is fitted with a pressure switch and suitable for bores or deep wells up to 50m. A solid cast iron casing with a cast bronze impeller ensures long-term protection against vermin, dust and water, and is convertible to either shallow or deep well options through the use of injector kits.

Single-stage convertible jet-assisted centrifugal pumps driven

by single or three-phase TEFC motors. Pump fitted with pressure switch for easy conversion to automatic operation.


  • Water supply from dams, creeks, rivers and bores
  • Tank filling
  • Stock watering
  • Sprinkler supply


WHY CHOOSE THE Davey Prime Jet 240 Shallow & Deep Well Pumps?

Single-stage (one impeller) convertible jet-assisted centrifugal pump

  • Simple design
  • Less prone to blockage than multistage pumps

Solid cast iron casing with cast bronze impeller

  • Robust construction for long life

Pressure switch fitted and pressure gauge supplied

  • Ease of installation

In-built thermal overload protection with automatic reset in 1Ø model

  • Provides motor protection against low voltage and/or high ambient temperatures

High TEFC - IP rating

  • Long-term protection against vermin, dust and water

Convertible to shallow or deep well options by choice of either shallow well or deep well injector kits

  • Versatile, suitable for many applications

Deep well models come with automatic demand response (ADR) valve

  • Maintains jet drive pressure
  • Helps prevents loss of prime



Maximum shallow well capacity (@210kPa, nil suction) 238 lpm
Maximum shallow well suction head 7.5m
Maximum deep well suction head 50m
Maximum water temperature 50ºC
Minimum water temperature 1ºC



Type 48501 48501 48503
Supply voltage 240V 480V 415V
Phase Single Single Three
Hz 50 50 50
Speed 2 pole, 2850 rpm 2 pole, 2850 rpm 2 pole, 2850 rpm
Input power (P1) 3.2 3.2 3.0
Output power (P2) 2.5 2.6 2.3
Capacitor 40μ 40μ -
Maximum rated current (FL) 14A 7A 5.1A
Locked rotor current 52A 26A 23.6A
Insulation class F F F
IP rating IP56 IP56 IP56
Starting P.S.C. P.S.C. D.O.L.

Single-phase units should be restricted to no more than 20 starts per hours. Three-phase units must be connected via a magnetic contactor with “quick-trip” or M10 rated overloads. Single phasing protection is strongly recommended.


Yoke Cast iron*
Pump body Cast iron*
Discharge port Cast iron*
Diffuser Cast bronze
Shallow well jet / venturi housing Cast iron*
Deep well injector housing Cast bronze
Deep well pipe fittings Brass
Deep well pipe clamps 316 stainless steel
Impeller Cast bronze
Jet (shallow well) Brass
Jet (deep well) Acetyl / brass
Venturi (shallow well) Brass
Venturi (deep well) Glass filled nylon
Seal ring (stationary) Ceramic
Seal ring (rotating) Carbon
O-rings Nitrile rubber
Priming plug Brass



Davey 48503 Shallow / Deep Well Prime Jet Pump Brochure Davey 48503 Shallow / Deep Well Prime Jet Pump Brochure