Metering Pumps - Diaphragm Type


Metering Pumps - Diaphragm Type
Metering Pumps - Diaphragm Type


Diaphragm Pump heads are recommended for critical, abrasive, toxic or poisonous or Flammable liquids where any product leakage is not acceptable.  

Working Principle :

The reciprocating plunger displaces hydraulic fluid causing movement of the diaphragm and a like movement of the process liquid. The diaphragm separates Hydraulic fluid and process liquid. A pressure limiting valves prevents overload of the pump. The internal leak age at the plunger is balanced by the leakage replenishment valve. Thus the diaphragm always operates in an optimal operating range. This diaphragm control gives very high operational safety. The diaphragm has a long life as it is always in hydraulic balance with the liquid being pumped on one side and hydraulic oil on the other side. The system is safe guarded by a built- in pressure relief valve on the hydraulic side.

Variations and Options

Plunger Pump Head :

  • Simple Diaphragm head for normal application.
  • Double Diaphragm for higher operating security.
  • Sandwich Diaphragm with Leak Protection System.

Stroke Adjustment :

  • Hand Operated Stroke Length Indicator.

Drives :

  • Electrical, AC Drive, 3 Phase / Single Phase Motor.
  • Flameproof / AIR Motor for Flameproof Environment.

Material Of Construction - Wetted Parts :

  • SS 304 / SS 316, PP & Teflon in Diaphragm Type Homogenizing etc.

Technical Specification :

The following chart gives a quick reference of Transflo Series Metering Pump Models. However pumps can be manufactured to meet specific capacities in terms flow rate and discharge pressures.

PUMP MODEL PLUNGER DIAMETER MM CAPACITY IN LPH MAX PRESSURE KG/CM2
75 SPM 100 SPM 150 SPM
TMP - 10D 10 4 5 7 15
18 11 15 23 10
25 22 29 44 10
30 32 42 64 5
35 44 60 86 5
TMP - 20D 7 3 4 6 15
15 16 21 32 10
30 64 85 128 10
45 143 191 286 5
62 272 363 544 5
74 375 500 625 4
TMP - 30D 10 11 14 22 15
20 43 56 86 10
35 130 174 260 10
60 383 511 766 5
85 770 1026 1540 5
TMP - 40D 12 20 27 40 15
25 89 118 177 10
45 285 380 570 10
75 797 1063 1594 5
102 1500 2000 3000 5
TMP - 60D 15 48 64 96 15
30 192 225 383 10
60 767 1022 1534 10
90 1725 2300 3450 5
120 3067 4090 6134 5

Application Industries :

Accurate Dosing and Mixing of Acids, Alkalis, Slurries, Safe transfer of Viscous Liquids, Pastes, Ointments, Drum Decanting.