Maguire’s proprietary technology has contributed to being the world’s largest supplier of liquid color pumps.

• For all molding and extrusion applications
• Accurate peristaltic dosing
• Easy to set up

Liquid Color Applications

• Maguire’s MS4 PeriStep pump provides precise metering at low rates to improve the quality of the coloring process.

Self Adjusting Speeds 

• The pump design and control makes it versatile for all types of molding and extrusion processes.

Wide Range of Dosing Outputs

• The choice of three tube sizes allows for wide range of dosing outputs- greater flexibility for the user.

Control Modes

• Extrusion – Continuous Mode: the MS4 will run the pump continuously at a rate set by the operator.
• Extrusion – Extrusion Following: the speed will change depending on throughput to maintain the correct percentage color dosed.
• Molding – Cycle Mode: the MS4 provides accurate dosing, regardless of variations in the process by monitoring the screw back time of the injection molding machine.

Intuitive Design

• The peristaltic pump provides precise metering at low rates, to improve the quality of the coloring process.
• Solid compression roller mean they never lose their tube compression tolerance, so dosing consistency and accuracy is maintained.
• Color changes can be made simply by replacing the feed tube, without the need to stop the process.

Automatic Speed Control 

• The MS4 control software uses automatic speed control to ensure self-adjusting accuracy.
• Eliminate need for motor adjustment.
• Versatile for all types of molding and extrusion applications.
• Maximized dosing range – intelligent software provides 5 to 1 speed reduction without the need for a gearbox, providing accurate dosing and greater flexibility.

Startup – 3 Steps

1. Set shot weight (part gram weight), or extrusion rate (process lb/hr or kg/hr).
2. Set liquid color percentage.
3. Set density of the liquid color (lb/gal or kg/ltr).

The MS4 pump automatically calculates the rest, working out the desired weight to volume to dose, reducing any opportunity for error.

Quick Color Changes

• Liquid delivery tubes are quick and easy to change when color changes are required.
• Liquid color tubes can be re-used and only require replacing periodically according to usage and time.
• Typical tube life is 1 to 6 months.

Rapid Access 

• The split head is easy to access – the cover detaches by releasing 3 screws. The complete roller set can be removed from there.

Easy Maintenance 

• No seals.
• No check valves.
• No clearances to allow even the slightest internal leakage.
• Self priming pump.

Maguire introduced the first peristaltic pump for metering liquid color in 1977 and is now the world’s largest supplier of liquid color pumps.

• Pioneer in liquid color pump technology
• Progressive cavity drum pump with smooth non-pulsating pump action
• Automatic speed control

Maguire progressive cavity drum pumps meter colors from 30- or 55-gal. (135- to 230-liter) drums in a smooth, non-pulsating action, achieving pressures of 200 to 300 psi (1380 to 2070 kPa).

Controller 

• The controller ensures a high degree of metering accuracy by sensing variations in screw movement during the injection molding cycle.
• Adjust metering rate to maintain uniform color delivery.

Progressive Cavity Pump 

• The progressive cavity drum pump meters liquid color by positive displacement.

Automatic Speed Control

• Accuracy is achieved by controlling the exact degree of rotation of the drive motor, delivering precision coloring during each cycle.

Positive Displacement

• The pump consists of a single helix steel screw (rotor).
• As the rotor rotates, liquid is drawn into one end, expelling it out the other end, producing a positive displacement pumping action.

Injection Molding

• Precise metering.
• Dosing uniformly over the entire screw return cycle.
• When preset count is reached, the motor automatically switches off to ensure no excess colorant is metered.
• Motor speed is precisely held regardless of changing torque requirements.

Extrusion Following Mode

• The drum pump follows the speed of the extruder automatically.
• Accurate dosing.
• Changes to the extruder are reflected in the output of the drum pump.
• A tachometer provides AC or DC voltage output from the extruder to the pump to enable the drum pump to match the extruder as speed ramp up or down.

The MPA – the original Liquid Peristaltic Pump from Maguire.

• Patented, simple and easy to use
• Peristaltic action – no parts to clean
• Accurate and precise dosing of liquids

MPA – Key Components

Conveying of raw materials from material storage to blenders, dryers or machine hoppers.

• Compatible with Maguire LowPro receivers
• Distribute materials from silos, surge bins, blenders or drying hoppers
• Clear-vu design for ease of use

Vacuum pump for conveying plastic raw materials from material storage to blenders, dryers or machine hoppers.

Multiple vacuum power units may be used in one system.

Clear Filter Bowl

• Clear-vu design for ease of use.
• Allows user to easily see when cleaning is required.

Filter Safety Switch

• Provides trouble free operation by minimizing internal dust contamination.
• A filter interlock switch initiates an alarm and the blower will not operate without the filter element in place or if the filter becomes clogged.

Quiet Operation

• Operates more quietly than positive displacement pumps.

Pressure Differential Switch

• The NVRBE pump is equipped with a clogged filter sensor.
• If the filter is clogged over 90%, the blower will stop.

Temperature Safety Switch

• Avoids overheating of the blower by monitoring blower temperature.
• When limit is exceeded, the temperature switch opens an air bypass valve to cool down the blower.
• The NVRBE vacuum pump will run in a no-load state, avoiding heat damage.

Air Bypass Valve

• Allows the blower to stay running while no vacuum is being called for.
• Ensures long pump life and minimal maintenance of blower.

The NVRBE vacuum pump is compatible with Maguire LowPro conveying system. Ideal for individual conveying applications for single and multiple material stations.

Autonomous Control

• The system consists of autonomously controlled receivers which poll for vacuum, taking vacuum and loading when free.
• No separate control or complicated set up and settings.

Simple To Operate

• Precise fill times can be applied using the user-friendly set time button.

Simplified Maintenance

• Removable module allows for quick, on-the-fly cleaning and maintenance.
• Easy access to filters.

Modular pumping groups for the process up to 4 pumps.

Recirculation pumping groups

Modular pumping groups for recirculation up to 4 pumps.