Diaphragm pump DMH series

waterwastewaterelectric

Process liquids transfer Industrial cooling Industrial process water treatment Hydraulically driven diaphragm dosing pumps with external motor The pump of the DMH series is a versatile positive-displacement diaphragm dosing pump. The diaphragm is coupled hydraulically via a precise gear-eccenter-tapet-system to a high-efficiency AC motor. The dosing capacity is adjusted by adjusting the stroke length with the stroke adjustment knob in a 1:10 ratio. The range is highly versatile, it covers a wide flow range and offers a variety of dosing head sizes, materials and accessories. Customers worldwide have enjoyed years of trouble-free operation from their DMH pumps. The Grundfos DMH range is a series of extremely strong and robust pumps for applications requiring reliable dosing capability such as process engineering. The liquid end is composed of: dosing head PTFE diaphragm ball valves. Other features: robust industrial pump with aluminium or cast-iron enclosure easy to install and operate design long-life PTFE diaphragm optimum capacity and stroke-frequency graduation dosing flow variation ±1.5 % (FS), linearity ±2 % (FS). Applies only to pumps with ATEX certification: The DMH 25x dosing pump is certified according to the ATEX guideline RL 94/9/EC for non-electrical operating supplies. The motor versions EEx e and EEx de defined by Grundfos are certified by the manufacturers according to ATEX guidelines for electrical operating supplies. The motor type plate is labelled according to ATEX. The ATEX-approved DMH pumps are available in a variety of configurations. Some can be used for dosing combustible liquids.