Rotary External Gear Pumps Light Duty
  Rotary External Gear Pumps Heavy Duty
  Rotary  Stainless Steel Gear / Lobe     Pumps
  Rotary Internal Gear Pumps
  Rotary External Gear Pumps  for High     Viscous Liquids
  Rotary Progressive Cavity Screw Pump     Series AM / BM
   
 
  DEV ENGINEERS
  Sales Office :
  402, Nandan Complex,
Opp. Railway Crossing,
Mithakhali, Ahmedabad - 380006.
Gujarat (INDIA)
  Tele-Fax :
  +91-79-26403839
  Call Us :
  +91-79-65495676
  Mobile :
  +91-98240-12742
 
E-mail :
  info@rotarygearpumpsindia.com
devpumps@dataone.in
info@devpumps.com 
 

Rotary External Gear Pumps Heavy Duty

DIRN/B Series

rotary_external_gear_pumps_heavy_duty

DW-II Series

rotary_external_gear_pumps_heavy_duty

GP Series

rotary_external_gear_pumps_heavy_duty1

The “ DEVPUMPS “ / “ DEV “ ‘s GP / DIRN / DIRB / DIMS -series Positive Displacement Double Helical ( Herringbone ) External Gear Pumps are design in three piece construction with pump body, front cover and back cover with in-built pressure relief valve. The front cover ( stuffing box ) has extra deep to minimize the leakage. These pumps can supply with mechanical seal type arrangement for leak proof application on special request .The special double helical gears eliminates the axial thrust & prevents trapping of the liquid between the teeth, resulting in maximum pumping efficiency , smooth flow and quite operation. The pump has large diameter shaft , which eliminate shaft deflection problems and gives maximum bearing life. A special type of bush bearing arrangement is provided in these pumps. By this the replacement of the bushes is done very easily and quickly by the removing the end covers. So the wear and tear of the pump body and gears due to play in the bushes can be easily avoided by constant checking of the bushes and easy replacement. The pumps are also supplied with ball or needle roller bearings, if pumping liquid has lubricating property. In built pressure relief valve design does not allow to develop excessive pressure by the pump, if the discharge line is closed. The jacketed features are also available on special request.

The “ DEVPUMPS ” / “ DEV “ ‘s GP-series gear pumps are available in different sizes and capacity with maximum working pressure 12 Kg/cm2 from 5 lpm to 500 lpm with sizes ¼” to 3” BSP screw end connections.

The “ DEVPUMPS “ / “ DEV “ ‘s DIRN / DIRB / DIMS / DIRN / DIRNX series gear pumps are available in different sizes and capacity with max. working pressure 17 Kg/cm2 from 20 LPM to 2000 LPM with Sizes 15mm to 150mm ( 1” to 6” ) Flange End Suction and delivery connections as per ASA-150.

The “ DEVPUMPS “ / “DEV “ ‘s DIZB /DIZN series gear pumps are available in different sizes and capacity with Max. working pressure 20 Kg/cm2 from capacity 10 LPM to 900 LPM with Sizes 1” BSP to 4” BSP Screw End Suction & Delivery connection with pressure relief valve at top side of body.

 
  Application
 
DIRB : Rotary Gear Pump with Bush Bearing design for handling of all types of Oils & Viscous liquids like All Fuel Oils
DIZB : like Light Diesel Oil ( LDO ), Furnace Oil ( FO ), LSHS, High Speed Diesel ( HSD ), Diesel , Mineral Oils,
Lubricating Oils, Fish and Animal Oils, Vegetable Oils, Tar, Asphalts, Sugar Syrups, Molasses, Starch, Soaps, Silicate, Wood Pulp, Glycol, Glycerin, Honey, Inks, Colors & Paints, Resins, Kerosene, Varnishes and viscous chemicals etc. in all types of industries for intermittent duty .
DIRN / : Rotary Gear Pump with Self Lubricated Needle Roller Bearing lubricate liquid itself for continuous duty
DIZN Application up to temperature 120*C .
DIRNX : Rotary Gear Pump with Independent lubricated Needle Roller Bearing Design lubricated externally by
oil/Grease for law viscosity or poor lubricating value or containing dirt or impurities such as crude oil, dirty lub. Oil, HSD, Kerosene etc.
DIRNJ : Rotary Gear Pump with jacketed Design for liquid having crystallization in nature like Bitumen, Tar, Wax , etc.
DIMS/GP : Rotary Gear Pump with Self Lubricated easily replaceable float bush bearing design for lifting of Molasses
Transfer , Foam Pressurizing Fire Fighting , Transfer of Co2 Liquid Gas from Road Tanker to Service Tank and
Viscous & Non Viscous Thick or Thin Liquid transfer application in chemicals & pharmaceutical industries
DIZX : Rotary Gear Pump with External bearing support for non-lubricating , law viscous liquids.
 
  Material of Construction and Parts List

 

Part No Part Details Standard Design Optional Design on request
1 Pump Body Cast Iron Gr.20, Is – 210 Cast Steel, Gun Metal , Stainless Steel SS-304 / 316
2 Front Cover Cast Iron Gr.20, Is – 210 Cast Steel, Gun Metal , Stainless Steel SS-304 / 316
3 Back Cover Cast Iron Gr.20, Is – 210 Cast Steel, Gun Metal , Stainless Steel SS-304 / 316
4 Shaft En-24 / SAE 8620 Harden & Grind En-8 / 9 / 31, SS-304 / 316 harden & Grind
5 Gears Graphite Asbestos Gland Packing En-8 / 9 / 31, SS-304 / 316 harden by nitriding
6 Seal Rubber oil seal Nitrile / Neoprene PTFE Graphite, Mechanical Seal , Oil Seal
7 Bearings Self Lubricated Sintered Bronze Cast Iron, Gun Metal , Ball Bearings, PTFE Coated
8 PRV Assembly Std. alloy steel Stainless steel
9 Key MS SS
 
  Performance Table

 

 

MODEL

 

SIZE

 

PUMP
SPEED

 

CAPACITY

Power requirement in H.P.
at KG/CM2 Differential Pressure at 500 SSU Viscosity Lub. Oil

Approx.
Weight
In Kgs.

LPM

US GPM

4 kg/cm2

8 kg/cm2

12kg/cm2

050 – S

 

½ “ X ½ “

 

 

 

 

1440RPM

8.3

2.2

0.25

0.5

0.75

10

050 – M

16.6

4.4

0.5

0.75

1.0

050 – L

25.0

6.6

0.75

1.0

1.5

100 – S

 

1” X 1 “

33.3

8.8

0.5

1.0

1.5

 

15

100 - M

41.5

11.0

0.75

1.0

2.0

100 – L

50.0

13.2

1.0

1.5

2.0

150 – S

 

1½“X1½“

83.3

22.0

1.5

2.0

3.0

 

25

150 – M

100.0

27.6

2.0

3.0

5.0

150 -  L

125.0

33.3

2.0

3.0

5.0

200 – S

2” X 2 “

150.0

39.0

3.0

5.0

7.5

32

200 - L

200.0

52.8

5.0

7.5

10.0

250 – S

2½“X2½“

250.0

66.0

7.5

10

12.5

45

250 – L

333.0

88.0

7.5

10

15

300 – S

3” X 3 “

415.0

105.0

10

15

20

75

300 - L

500.0

132.0

15

20

25

400 – S

4 “ X 4”

666.6

176.0

Consult company for selection of
Electric Motor H.P.

120

400 – L

833.3

220.0

500 – S

5” X 5 ”

 

960 RPM

1000.0

264.0

Consult company for selection of
Electric Motor H.P.

180

500 – L

1250.0

330.0

600 – S

6 “ X 6 “

1660.0

440.0

Consult company for selection of
Electric Motor H.P.

225

600 – L

2083.0

550.0

 
  LQUIDS HANDLED BY EXTERNAL GEAR PUMPS

 

ADHESIVES

CORN SYRUP

FRUITS JUICES

ASPHALT

CRESOL

GLUES

BLOOD

CREOSOTE

GULCOSE

BLACK LIQUOR

DETERGENTS

GLYCERINE 

BITUMEN

DOP

GLYCOL

BUTTER

DOW THERM

GREASE

CASTOR OIL

ENAMEL

HOT OIL

CAUSTIC LYE

FATS

HONEY

COAL TAR

FATTY ACIDS

HYDRAULIC OILS

COCOA

FISH OIL

KEROSENE

COOKING OILS

FOAM

LACQUER

LACTIC ACID

PLASTICIZERS

SULPHURIC ACID

LAXTEX

PHENOL

SYRUP

LEAD

PRINTING INK

TALLOW

LINSEED OIL

RESIN

TAR (MOLTEN)

MILK

SAUCES

TRANSFORMER OIL

MINERAL OIL

SHELLAC

TURPENTINE

MOLASSES

SIZING LIQUID

VARNISH

NAPTHA

STARCH LIQUOR

VANASPATI

NAPTHELENE

SILICONE FLUIDS

VEG OIL

OLEIC ACIDS

SOAP

VINYL CHLORIDE

PITCH

SODIUM SILICATE

WAX

PAINTS

SOYA OIL

WHEY

PARAFIN WAX

STYRENE

 

PHOSPHORIC ACID

SUGAR SYRUP

 


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