Nyva Series

Hydraulic Diaphragm Metering Pumps


Delivering a high level of precision and repeatability in the metering of chemicals across a broad range of industrial processes, Nyva is the professional’s choice for applications requiring reliability in even the most challenging environments.

Technical Features

Flow rateup to 660 l/h
Pressureup to 124 bar
Material of pump headSS 316L, PP, PVDF and PVC-U
Stroke length10 to 25 mm
Diaphragm diameter 12/ 15/ 20/ 30/ 35/ 40/ 50 mm
Motor 0.18/ 0.25/ 0.75/ 1.1/ 1.5 kW


Positive return type

  • Low-noise integral worm gearbox, oil bath lubricated
  • Rotating parts on ball bearings to minimize wear
  • High-precision linear stroke adjustment, both manual and via electrical actuator

Hydraulic diaphragm heads

The ideal solution for applications requiring a high level of safety and reliability
  • Wide range of wetted parts available to suit different applications
  • Head-sealed design for protecting the pumped liquid against external contamination
  • PTFE single diaphragm is compatible with a vast range of liquids

Mechanical replenishment system

This feature maintains a constant volume of oil in the hydraulic chamber, thereby guaranteeing maximum precision and repeatability while controlling diaphragm deformation for longer life.

Advantages at a glance

Decades of experience have combined to produce Nyva, with its refined design the result of experience combined with premium materials and discerning manufacturing standards.

The result is a pump that delivers metering precision and consistency for repeatable results and efficient chemical consumption.
Nyva’s ATEX-approved design and zero-leakage profile provide operators with reassurance that their pump won’t let them down, invaluable in continuous-running processes where costly unplanned downtime is not an option.
The adjustable flow rate of Nyva allows smooth execution control while a choice of wetted parts along with PTFE diaphragm ensure broad chemical compatibility for various applications. The intuitive set-up allows quick installation, easy overhauls and spare parts replacement.

Industry Applications

Power generation
  • Phosphate dosing to prevent scale formation in boiler tubes
  • Oxygen and ammonia scavenger to maintain pH value and prevent corrosion
  • Amine dosing to neutralize the carbonic acid present in the condensate
  • Food & Beverage
  • Protection against the botulism bacterium
  • Thickening agent and foam stabilizer
  • Cleaning and disinfection of fruit and vegetables
  • Industrial Effluent Treatment
  • Removal of solid particles
    Adjustment of pH levels
    Odour control
    Sludge treatment and removal
  • Desalination
  • Regulation of water hardness and pH
  • Filtration
  • Flocculation
  • Acidification
  • Remineralisation
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