Plunger Metering Pumps

Plunger Metering Pumps

Plungers stand for accurate metering
The heart of the liquid end in a plunger metering pump is a highly resistant piston made from coated stainless steel. As soon as the plunger is moved into the dosing head, the suction valve closes and the feed chemical flows out of the dosing head through a discharge valve. When the plunger moves in the opposite direction, the discharge valve closes due to the negative pressure in the dosing head. Fresh feed chemical flows through the suction valve into the dosing head.

The versatile solution for all industries
MBN plunger metering pumps can be found in oil and gas production (onshore/offshore), refineries, the chemical and petrochemical industry, the pharmaceutical, cosmetic and food production industries, and as bottling pumps in the packaging industry. Canit find your industry? Contact us and weill find the right pump for your application.

Technical Details
Stroke length: 0-20 mm, Rod force: 8,000 N
Stroke length adjustment range: 0 – 100%
Stroke length adjustment: manually by means of shift ring in 0.5% increments (optionally with electric actuator or control drive)
Metering reproducibility is better than ± 0.5% within the 10 – 100% stroke length range under defined conditions and with proper installation. Observe the information in the operating instructions.
High-performance ceramic-coated stainless steel plunger Wetted materials: Stainless steel 1.4571. Special materials are available on request
A wide range of power end versions is available: Three-phase standard motors, motors for use in areas at risk from explosion and different flange designs for use in customer-specific motors
Degree of protection: IP 55
Salt water-resistant, acrylic resin-coated cast aluminium housing
Provide suitable overload protection in all plunger metering pumps during installation for safety reasons
Makro TZ Metering Pump Actuators
Makro TZ stroke length actuator/control drive
Makro TZ actuator

Servomotor for automatic stroke length adjustment, actuating period approx. 1 sec for 1 % stroke length, including 1 kΩ feedback potentiometer for stroke position response signal, IP 54 degree of protection. Electrical connection 230 V (±10 %), 50/60 Hz, 40 W mech. stroke length display fitted on the Makro TZ power end.

Special voltage/higher degrees of protection/explosion protection upon request.

Makro TZ control drive

Control drive consisting of an actuator with servomotor and integral microprocessor controller for stroke length adjustment via a standard signal. Technical data see actuator.

Design:

Standard signal current input 0/4-20 mA corresponds to stroke length 0 -100 %, manual /automatic operation switch, key switch for stroke adjustment in manual mode. Actual value output 0/4-20 mA for remote display.

Variable speed motors with integrated frequency converter (identity code specification V)
The following functions are integrated in the terminal box cover:

Start/Stop switch
Manual/external operation switch (0/4 - 20 mA)
Potentiometer for speed control in manual mode
Onn request externally controllable via PROFIBUS® DP