The Liberty Process ML series of Low Flow Progressive Cavity Metering and Dosing Pumps from Liberty Process Equipment offers a high quality pump option for higher pressures at a very competitive price. The ML series is based on the very popular Liberty series of standard flanged progressive cavity pumps. The Pumps are available with standard ANSI suction flanges and with NPT female threaded discharge connections.
The ML series is available in a variety of stage lengths so you can tailor your pump to your exact needs in terms of flow and pressure. The ML series offers a cost effective option and is an ideal pumping solution for metering pump applications and offers several important advantages over other types of metering pumps.
The modular design of the ML Series of Progressive Cavity Metering and Dosing Pump is a hardened pinned-joint drive assembly with a body available in steel or stainless steel and internal wetted components in either stainless steel or hardened tool steel with hard chrome plating for long-life and durability in abrasive pumping applications. Other, non-contacting internal parts are made of carbon steel.
Rotors and Stators for the ML Series are available in 2, 3, and 6 stages representing 120, 150, 225, and 450 PSI discharge pressures with stators available in Buna Nitrile, Viton, EPDM and Natural Rubber. The standard seal design is a set of packing with a lantern ring and flush connectors. Mechanical Seal options are readily available.
Liberty Series – ML Metering Pumps – Technical Data
| Flow Rate | 0 – 100 GPM |
|---|---|
| Pressure | 120 – 450 PSI |
| Seal Options | Packing or Mechanical Seal |
| Base Options | Steel or Stainless Steel |
| Rotors | Stainless Steel, Chrome Plated Tool Steel |
| Stators | Buna/Viton® / EPDM |
Pump Features
- Modular Design
- Maintenance Free
- Easy Assembly/Disassembly
- Simple Pin-Joint Design
- Low Shear
- Non-Pulsating
Industry Uses
Compatibility
- ADPL & ADBPL Pumps
- ANPL & ANBPL Pumps
ML Series Pump Lines
2ML1 Metering Pumps
The 2ML1 size Progressive Cavity Metering Pump is rated for 0.056 gallons per minute per 100 RPM. Standard connections are 3/4″ discharge & 1″ suction.
| Range | 0 – 0.58 GPM |
|---|---|
| Pressure | 0 – 120 PSI |
2ML8 Metering Pumps
The 2ML8 size Progressive Cavity Metering Pump is rated for 11.7 gallons per minute per 100 RPM. Standard connections are 6″ & 4″.
| Range | 25 – 100 GPM |
|---|---|
| Pressure | 0 – 150 PSI |
3ML1 Metering Pumps
The 3ML1 size Progressive Cavity Metering Pump is rated for 0.056 gallons per minute per 100 RPM. Standard connections are 3/4″ & 1″.
| Range | 0 – 0.58 GPM |
|---|---|
| Pressure | 0 – 180 PSI |
6ML1 Metering Pumps
The 6ML1 size Progressive Cavity Metering Pump is rated for 0.056 gallons per minute per 100 RPM. Standard connections are 3/4″ & 1″.
| Range | 0 – 0.58 GPM |
|---|---|
| Pressure | 0 – 360 PSI |
6ML2 Metering Pumps
The 6ML2 size Progressive Cavity Metering Pump is rated for 0.026 gallons per minute per 100 RPM. Standard connections are 1-1/2″ & 3/4″.
| Range | 0.50 – 3.0 GPM |
|---|---|
| Pressure | PRESSURE0 – 360 PSI |
6ML3 Metering Pumps
The 6ML3 size Progressive Cavity Metering Pump is rated for .86 gallons per minute per 100 RPM. Standard connections are 2-1/2″ & 1-1/4″.
| Range | 1.7 – 10.0 GPM |
|---|---|
| Pressure | 0 – 450 PSI |
6ML4 Metering Pumps
The 6ML4 size Progressive Cavity Metering Pump is rated for 2.02 gallons per minute per 100 RPM. Standard connections are 2-1/2″ & 3″.
| Range | 1.8 – 24 GPM |
|---|---|
| Pressure | 0 – 450 PSI |