Name: Davey DT22G Submersible Grinder Pump | Dowdens Pumping & Water Treatment
SKU: DT22G
Availability: OutOfStock

Description

SUBMERSIBLE GRINDER PUMPS

Davey submersible Grinder pumps consist of a solids handling grinder inlet with a high head open impeller to pump wastewater containing soft solids in suspension.

Suitable applications include grey and black water pumping, sump emptying, septic effluent and raw sewage disposal, and pumping wastewater with soft solids in suspension.

Application

Grey and black water pumping
Sump emptying.
Septic effluent
Sewage disposal
Wastewater with soft solids in suspension.

Able to pump soft organic solids, sanitary products, thin rubber products and even some textiles in suspension, by shredding to a slurry
Open impeller prevents blockage of the pump by small solids in the slurry
High heads and small solids allow connection to small discharge pipe systems, especially suited to pumping waste water to pressure sewer mains
Silent operation
Quick and easy installation
Hose tail supplied with every pump
Low maintenance
Fully repairable
Mounting feet with rubber cushions fitted for a firm and stable positioning during installation and operation for D75G/GA, DT08G, D120G/A, D150G/A, DT12G & DT15G.
Adaptable to slide rails – see accessories

PUMP

Heavy duty shredding and grinding ring at inlet
Centrifugal design, open impeller
Double Mechanical shaft seal in oil bath
Hard faced Silicon Carbide/Ceramic seal on pump side
Sand slinger lip seal for added protection
Oring casing sealing
Corrosive resistant stainless steel and quality heavy duty powder coated cast iron pump parts

MOTOR

2 pole, 2900rpm 50Hz 240V single phase or 415V three phase
Submersible with IPx8 enclosure
Class F insulation
10 metre HO7RN-F oil resistant power lead and seal sensor lead fitted with bared wire lead ends for easy connection to power supply terminations
Seal sensor leads fitted for easy connection to a protection relay to enable timely repairs prior to motor damage. Not fitted to D75G/GA or DT08G models
Protected against both high operating temperatures and high current by a built in automatically resetting thermal overload

OPERATING LIMITS
Capacities to	290 lpm
Maximum total head	38m
Maximum submergence	20m
Maximum pumped water temperature	40º C

MATERIALS OF CONSTRUCTION
Part	Material
Impeller	Cast iron - FCD 400
Shredding ring	High Chromium steel
Grinding ring	High Chromium steel
Pump casing	Cast iron - FCD 400
Outlet	Cast iron - FC200
Shaft seal – pump side Shaft seal – pump side	Silicon carbide / ceramic Carbon / ceramic Mechanical seals in captive oil bath and oil seal
Shaft seal elastomer	Nitrile rubber
Pump shaft	304 stainless steel
O-rings	Nitrile rubber
Motor shell	304 stainless steel
Fasteners	304 stainless steel
Float and power supply leads	HO7RN-F oil resistant

ELECTRICAL DATA
Model	D75G/GA	D120G/GA	D150G/GA	DT08G	DT12G	DT15G	DT22G	DT37G
Electrical lead	10m	10m	10m	10m	10m	10m	10m	10m
Phase	Single	Single	Single	Three	Three	Three	Three	Three
Volts	220-240	220-240	220-240	380-415	380-415	380-415	380-415	380-415
kW (nameplate)	0.75	1.20	1.50	0.75	1.20	1.50	2.20	3.70
Amps – FL	7.50	10.00	13.00	1.90	2.30	3.00	4.50	7.90
Insulation	F class	F class	F class	F class	F class	F class	F class	F class

Suitable Fluids

Sewage or “Grey Water” of neutral pH containing up to 20% soft organic solids (some wear should be expected while pumping hard solids in suspension)

Installation & Priming

Do not use this product for recirculating or filtering swimming pools, spas, etc. While these pumps are built to high safety standards, they are not approved for installations where people will be in the water while they are operating.

Do not pump abrasive materials. Sand and grit in the water being pumped will accelerate wear, causing shortened pump life.

Make room for the float switch to operate. Automatic models have a float switch to turn them on when the water level rises and turn them off again when it has been pumped down to the safe operating level of the pump. If the float switch is not free to rise and fall, correct pump operation may not be possible.

Don’t run your pump dry. Non-automatic models must be switched off manually or by way of an external float/level switch when the water level is reduced to the top of the pump housing.