pdm_big2_lev

PD M

Metering pumps

mechanical diaphragm

Mechanical Diaphragm Metering Pump with eccentric movement, spring return and flow regulation with manual control.
The PD M mechanical diaphragm metering pump has been designed and constructed to meet the most varied metering demands of liquids and chemical reagents.
This pump features simple, and tested operating principles, yet it does not forgo the high metering precision that characterises all Sodi Scientifica pumps.
Its sturdy and compact structure assures high performance in heavy-duty applications and makes its maintenance very straightforward.

Download PDF 

Data sheet

Motor type MEC 56 Special Tropicalized
Gear motor in oil bath
Eccentric crank mechanism with spring return
Protection level IP 55
Power supply 230 V single-phase or 400 V three-phase
Analog flow indicator

Nominal performance

Max flow rate(1) (2) l/h 6 12 18
Max. press. with three-phase motor bar 8 8 8
Max. press. with single-phase motor bar 5 5 4

Construction features

Stroke length mm 2,8
Diaphragm DN, mm mm 56
Strokes / 1’ (SPM) SPM 45 90 135
Connections A/M 7/10 mm hose connector
Valve type Single sphere, Single sphere with spring AISI 316 (PVC valve body only), High viscosity
pdm_2_lev

Construction materials

Head and valve body Glass fibre filled polypropylene
Diaphragm PTFE covered NBR
Valves Ceramic, AISI316 stainless steel, Glass, PTFE
Seals FPM (Viton®), EPDM
Pump body Light Alloy
Painting RAL 5019 Nitrosynthetic enamel

Manual flow regulation

Manual regulation when stationary or in motion: Theoretical 0-100%, Useful 10-100%. Diaphragm stroke length is regulated through a manual rotation of a graduated wheel with locking knob. The flow rate is indicated on a printed analog scale.

Supplied accessories

Polyethylene Hose 7/10 4,5m Set of head seals 1
AS 1/2″ Valve 1 Bottom valve with filter 1
Vent hose 1 Diaphragm disassembly wrench 1

Weights and dimensions

Net weight kg 5,80
Gross weight kg 6,00
Packaging dimensions mm 340x270x240
macro_pd_m_lev