SR Series
Type D

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  • Manually adjustable output with spring return function
     
  • Suitable for use with abrasive liquids with small amounts of solids in suspension for all drip proof / airtight applications
     
  • Available in many different materials of construction including PVC, PTFE, PVDF and Stainless Steel to suit most chemicals
     
  • Output capacities up to 574 litres/hr
     
  • Pressures up to 10 bar (145 psi)
     
  • Suitable for water treatment and petrochemical applications
     

Technical Features

All pumps are fitted as standard with gearbox reduction system and with vertically mounted V18 shaped electric motor that conform to the UNEL-MEC specifications. The motor's power range is from 0.18 kW up to 0.25 kW at European standard 3 phase voltages of 230/400V @ 50Hz, 4 poles.

The motors conform to the UNEL-MEC specifications and are available with different voltages, frequencies, insulation standards and special explosion proof versions.

The gearbox utilises a worm-wheel reduction system with all bearings fully supported within the fully lubricated gearbox.

The manually adjustable output with spring return is operated by micrometer type stroke limiter, which adjusts the piston delivery stroke (output), while the suction stroke (reload) is spring assisted.

Capacity adjustment can be effected whilst in operation or at rest. The movement of the piston is controlled by a precise reciprocating gearbox which ensures an accurate and repeatable volumetric displacement.

Automatic remote flow control adjustment is also available by means of servo control units, with 4-20mA control signal, or by means of a 3 - 15 psi pneumatic control signal.

The simple build configuration and a small number of component parts allow an easy checking and maintenance.

Direct Diaphragm
Dosing Pumps - Max 574 Ltrs/hr

Materials of Construction Codes

TYPE

PUMPING HEAD

VALVES (balls) VALVE SEATS DIAPHRAGM
11 AISI 316 AISI 316 AISI 316 PTFE/NBR
12 PP PYREX PVDF PTFE/NBR
13 PVC PYREX PVC PTFE/NBR
17 PP AISI 316 PP PTFE/NBR

Product Code Description

D series Mechanical Diaphragm pumps are available in four different sizes:

   D 050 N - Max 49 Ltrs/hr
   D 100 N - Max 374 Ltrs/hr
   D 101 N - Max 408 Ltrs/hr
   D 121 N - Max 574 Ltrs/hr

 

For these two types 4 different diaphragm sizes are available to suit each clients' applications for capacity and pressure.

Mechanical diaphragm metering pumps are suitable for use when:

   The dosed liquid contains small amounts of solids in suspension.

   The dosed liquid is a toxic solution.

   A drip proof/air tight application is required.

   High pressure dosing is not required

Standard materials of pump-head construction:
AISI 316 Stainless steel and PVC.
Available in many different materials of construction to suit the chemicals in use.

Jacketed pump-heads for either cooling or heating are available to suit requirements.

Valves

Heads

All pumps are fitted as standard with gearbox reduction system and with vertically mounted V18 shaped electric motor that conform to the UNEL-MEC specifications.

The motor's power range is from 0.18 kW up to 0.55 kW at European standard 3 phase voltages of 230/400V @ 50Hz, 4 poles.

Multiple Headed Pumps

Different multiple heads units are available on request.  Each pumping element is independently adjustable both in operation or at rest.

Pump Model Specifications

D100N
 
Pump type Reducer ratio Strokes number (*1) Capacity (*2) Max Pressure (*3) Connections (*4) Motor ø mm
Membrane
Stroke Net Weights Kg (*5)
L/1' L/h Kg/cm2
  (*1) 50 Hz 60 Hz 50 Hz 60 Hz 50 Hz 60 Hz SS 316 PVC SS 316 PVC   Diaphragm Length SS 316 PVC
D-100N- 70 I 35 42 0,75 0,9 45 54 5 1/2" G.m. 0.18 kW
3 Ph
~
1400 rpm

 
or 
0.18 kW
1 ph
~
1400 rpm

70 10 11 8
F 58 70 1,25 1,50 75 90
C 96 116 2,06 2,50 124 150
B 116   2,50   150  
D-100N- 90 I 35 42 1,15 1,38 69 82,8 3 3/4" G.m. 90 12 8
F 58 70 1,91 2,30 115 138
C 96 116 3,16 3,83 190 230
B 116   3,83   230  
D-100N- 105 I 35 42 1,56 1,87 94 112,3 1,5 105 12 8.5
F 58 70 2,60 3,12 156 187,2
C 96 116 4,30 4,96 258 298
B 116   4,96   298  
D-100N- 120 I 35 42 1,78 2,12 106 127,4 1" G.m. 120 14 10
F 58 70 2,95 3,54 177 212,4
C 96 116 4,86 6,23 292 374
B 116   6,23   374  

(*1) Piston's strokes number during 1 minute with 4 poles installed motor
I = Reducer ratio 1 : 40 = 35 strokes at 50 Hz / 42 strokes at 60 Hz
F = Reducer ratio 1 : 24 = 58 strokes at 50 Hz / 70 strokes at 60 Hz
C = Reducer ratio 1 : 14,5= 96 strokes at 50 Hz / 116 strokes at 60 Hz
B = Reducer ratio 1 : 12 = 116 strokes at 50 Hz
(*2) The indicated capacity value is subject to changes due to the working pressure, the dosed liquid, the viscosity and the installation asset.
(*3) Higher pressures are available with out of standard executions.
(*4) If requested, different range of connections are available.
(*5) The weight is approximate and is the value of the pump fitted with a totally enclosed fan- cooled outdoor motor.
(6) The pumps can be supplied with accessories if requested.
(7) The pumps are painted with a 2 component EPOXIPOLYAMIDIC PAINT RAL 7030.



D101N  

Pump type Reducer ratio Strokes number (*1) Capacity (*2) Max Pressure (*3) Connections (*4) Motor ø mm
Membrane
Stroke Net Weights Kg (*5)
L/1' L/h

Kg/cm2

  (*1) 50 Hz 60 Hz 50 Hz 60 Hz 50 Hz 60 Hz SS 316 PVC SS 316 PVC   Diaphragm Length SS 316 PVC
D-101N- 70 F 70 84 1,50 1,80 90 108 8 1/2" G.m. 0.25 kW
3 Ph
~
1400 rpm

 
or 
0.25 kW
1 ph
~
1400 rpm

70 10 11,5 8
C 96 116 2,05 2,46 123 147,6
B 120   2,56   154  
D-101N- 90 F 70 84 2,46 2,96 148 177,6 5 3/4" G.m. 90 13,5 10
C 96 116 3,36 4,04 202 242,4
B 120   4,25   255  
D-101N- 105 F 70 84 3,35 4,02 201 241,2 3 105 14,5 11
C 96 116 4,58 5,50 275 330
B 120   5,51   331  
D-101N- 120 F 70 84 3,75 4,50 225 270 1" G.m. 120 18 12
C 96 116 5,13 6,16 308 369,6
B 120   6,80   408  

(*1) Piston's strokes number during 1 minute with 4 poles installed motor
F = Reducer ratio 1 : 20 = 70 strokes at 50 Hz / 84 strokes at 60 Hz
C = Reducer ratio 1 : 14,5= 96 strokes at 50 Hz / 116 strokes at 60 Hz
B = Reducer ratio 1 : 11 = 120 strokes at 50 Hz
(*2) The indicated capacity value is subject to changes due to the working pressure, the dosed liquid, the viscosity and the installation asset.
(*3) Higher pressures are available with out of standard executions.
(*4) If requested, different range of connections are available.
(*5) The weight is approximate and is the value of the pump fitted with a totally enclosed fan- cooled outdoor motor.
(6) The pumps can be supplied with accessories if requested.
(7) The pumps are painted with a bicomponent EPOXIPOLYAMIDIC PAINT RAL 7030.