SR Series
Type FM

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Brochure

  • 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 47 litres/hr
     
  • Pressures up to 10 bar (145 psi)
     
  • Suitable for water treatment and petrochemical applications
     

Technical Features

Adjustable capacity from 0-l00% whilst in operation or at rest.
The movement of the diaphragm is based on a precise reciprocating gearbox which provides for exact volumetric displacement.
Exact diaphragm movement is achieved, thereby providing accurate stroke reproduction. Linear capacity is achieved, at all stroke settings.
The gearbox mechanism is operated by an eccentric cam, which offers a positive displacement delivery stroke, whilst the suction stroke is spring assisted. Vertically mounted motors are fitted to the chemical dosing pump and the gearbox 0.09 kW.
Both single and three phase motors can be fitted to suit site requirements.
The gearbox utilises a worm-wheel reduction system with all bearings fully immersed within the grease lubrication.

Specifications

4 sizes of gearbox are available offering stroke movements from 0-5 mm.

Maximum suction lift of 2 metres.

Operating temperatures minimum 0° C - maximum 50°C.

Metering Pump Heads

The pump-head is connected to the gearbox via a spacer assembly.

The pump-heads utilise mechanically actuated diaphragm.

Double valve ball assemblies are available which have been designed for easy inspection and accessibility.

Suction and delivery connections, if requested, can be 3/8" G.F.

Spring Return Mechanical Diaphragm
Dosing Pumps - Max 47 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 PVC PTFE/NBR
13 PVC PYREX PVC PTFE/NBR
17 PP AISI 316 PP PTFE/NBR

Product Code Description

FM series Mechanical Diaphragm Dosing Pumps are available in two different sizes:

   FM 050-30 - Max 14 Ltrs/hr
   FM 050-50 - Max 47 Ltrs/hr

 

Pump Model Specifications

FM
 
Pump type Reducer ratio Strokes number (*1) Capacity (*2) Max Pressure.    Motor ø mm Stroke  
L/1' L/h Kg/cm2 Connections Features Membrane Net Weights Kg (*3)
  (*1) 50 Hz 60 Hz 50 Hz 60 Hz 50 Hz 60 Hz SS 316 PP+FV SS 316 PP+FV   Diaphragm Length SS 316 PP+FV
FM 050 H 41 50 0,283 0,340 17 20,4 5 1/2" G.m. 1/2" G.m. 0.08 kW
3 Ph
~
1400 rpm

or
0.08 kW
1 Ph
~
1400 rpm
 

50 5 5,5 4,5
F 58 70 0,383 0,460 23 27,6
D 82 98 0,566 0,680 34 40,8
B 116   0,783   47  
             

(*1) Piston's strokes number during 1 minute with 4 poles installed motor
H = Reducer ratio 1 : 34 = 41 strokes at 50 Hz / 49 strokes at 60 Hz
F = Reducer ratio 1 : 24 = 58 strokes at 50 Hz / 70 strokes at 60 Hz
D = Reducer ratio 1 : 17 = 82 strokes at 50 Hz / 98 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 part EPOXY-POLYAMIDE PAINT RAL 7030.