The BLACKLINE Series MD is a motor driven, spring return mechanical diaphragm metering pump for precise and accurate metering control. With many standard features, the Series MD includes oil lubricated ball bearings in a die-cast aluminum housing, long life reinforced PTFE diaphragm, micrometer style stroke length adjuster and many liquid end material options to suit any application.
Nine distinct models are available, having flow capabilities to 132 GPH (500 LPH) and pressures to 150 PSI (10 BAR), with a standard turndown ratio of 10:1 or up to 100:1 with the optional VFD Vector. Metering performance is reproducible to within ± 2% of maximum
Optional Features
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Variable Frequency Drive for Automatic Control.
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Fully Scalable 4-20mA, 0-10VDC signals.
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ATEX Group II, Category 3 – Zone 2/22 for non-flammable liquids with proper motor selection.
Pump Head Materials |
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Turndown Ratio |
10:1 or 100:1 with the optional VFD Vector Drive
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Wetend |
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Seat O-Rings Available |
PTFE, PVC, 316SS, Incoloy 825
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Diaphragms |
Rugged double-sided PTFE faced with drive side support ring
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Connections |
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Ball Checks Available |
Pyrex, 316SS, Hatelloy C-276
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Accuracy and Repeatability |
Reproducibility of +/-2% of max capacity
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Product Options |
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Accessories |
Back Pressure Valves
KOP Kits
Pulsation Dampeners
Y Strainers Pressure Relief Valves
Y-Strainers
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blackline_metering_pumps_product_list
PES2S-BLHF PID
PES2S-BLA PID
PES2L-BLHF PID
PES2L-BLA PID
PES1S-BLHF PID
PES1S-BLA PID
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blackline_series_md_iom
blackline_series_md_tech_sheet