Hydraulic double-diaphragm Heads Version

Technical Features

Hydraulic double-diaphragm Heads Version
Range of Pressure Up to 350 barg for hydraulic diaphragm
Flow Rate Up to 7,800 l/h with a single head
Fluid Temperature From -10°C to 90°C (from -40°C to 150°C on request)
Wetted Parts SS 316L, PP, PVDF and PTFE (exotic alloys available on request

Key Product Features
Capable of superior performance in even the most severe operating conditions, the Nexa Series hydraulic double-diaphragm metering pumps represent one of heavy industry’s most versatile, robust and reliable fluid metering and dosing solutions.

Designed to meet API 675 3rd edition standard, Nexa’s exceptional build quality enables stable dosing even under extreme operating pressures and temperatures, from chemical metering in oil and gas field applications to scaling and corrosion reduction in cooling water treatment

A trustworthy solution for applications requiring the highest levels of operational accuracy and reliability. Features include:

  • Hydraulic oil-operated diaphragms
  • Double oil for hydraulics and mechanism lubrication ensuring 100% chemical tightness and operational safety for higher reliability, dosing accuracy and application flexibility
  • Sealed design for metering hazardous fluids such as toxic or corrosive solutions
  • Protection against external contamination
  • Preformed PTFE diaphragms as standard, for an excellent chemical compatibility and increased compactness allowing an outstanding level of efficiency
  • Diaphragm rupture detector available in multiple options:
    – Exakta standard local visual,
    – Local visual via pressure gauge,
    – Pressure switch (any make, model or case material and signal type: analogue 4 – 20 mA, digital, HART protocol)
    – Pressure transmitter (any make, case material and signal type: analogue 4 – 20 mA, digital, HART protocol)
  • Mechanical replenishment system maintains a constant level of the hydraulic fluid, thereby guaranteeing maximum precision and repeatability and enabling diaphragms deformation control for extended life
  • Standard wetted parts include 316L stainless steel, PP and PVDF, with other materials available upon request

Packed-plunger Heads Version

Technical Features

Packed Plunger Pumps With Full Motion Mechanisms
Range of Pressure Up to 650 for packed plunge
Flow Rate Up to 7,800 l/h with a single head
Fluid Temperature From -10°C to 90°C (from -40°C to 150°C on request)
Wetted Parts SS 316L, PP, PVDF and PTFE (exotic alloys available on request

Key Product Features
Capable of superior performance in even the most severe operating conditions, the Nexa Series packed-plunger metering pumps represent one of heavy industry’s most versatile, robust and reliable fluid metering and dosing solutions.

Designed to meet API 675 3rd edition standard, Nexa’s exceptional build quality enables stable dosing even under extreme operating pressures and temperatures, from chemical metering in oil and gas field applications to scaling and corrosion reduction in cooling water treatment

The simplest and most suitable solution for dosing and transferring non-hazardous liquids, PN and KN plunger heads boast special features that offer superior performance.

  • Plunger available with Stellite or ceramic coating and precise surface finish for increased resistance and longer working life
  • Perfect alignment of the plunger in the seal
  • Adjustable seal for leakage recovery
  • Oil-bath lubrication
  • Low-noise internal worm gearbox
  • High-precision stroke adjustment for ultrafine volume control
  • Increased turndown ratio achievable via frequency converter
  • Housing available in cast iron as standard and nodular cast iron to cope with harsh ambient conditions
  • Exakta-designed electrical and pneumatic actuators available

Process Pumps For High-pressure Duties

Technical Features

Process Pumps For High-pressure Duties
Capacity Range up to 65000 l/h, up to 1150 bar
Wetted Parts SS 316 L, LTCS, Super Duplex, different material (on request)
Flow Rate Adjustments by frequency converter
Compliance with international standard approvals as API 674, ASME, TR CU 012/2011

Key Product Features
A flexible, robust and reliable solution to pumping high-temperature, abrasive and viscous liquids in a multitude of industrial applications, the 3C Triplex pump series offers the best total cost of ownership available on the market.

3C Triplex pumps are designed in accordance with API 674 standards and can be customized to achieve special operating requirements, allowing the customer to build the ideal system for the unique demands of their application.

The unique design of the 3C Triplex mechanism allows the pump to operate at a very low speed without forced lubrication, making it ideal for applications requiring a slow plunger motion to avoid cavitation when pumping hot or viscous liquids or fluids with low vapour pressure. The range features:

  • Silent and vibration-free operation due to proper mass balancing and sizing. The integral crankshaft and
    crossheads are supported at both ends, giving precise alignment of the plunger rods for a longer sealing life
  • A compact and robust assembly, providing high performance within a minimal footprint
  • Low-speed operation, resulting in reduced wear of moving parts and high reliability
  • Adjustable capacity, using a frequency converter to vary motor speed

Mechanical Diaphragm And Plunger Spring Return Pumps

Technical Features

Process Pumps For High-pressure Duties
Pressure up to 20 bar
(higher upon request)
Flow Rate up to 1000 l/h
Mechanical Diaphragm PTFE
Piston available as standard in SS 316
or ceramic
Wetted Parts SS 316L, PVC, PP and PVDF

Key Product Features
Consistent, economical and robust, the Radix series offers the ideal solution for the high-precision injection and metering of industrial chemicals in multiple application fields including water and wastewater treatment, desalination, food and beverage.

Hydraulic Diaphragm Metering Pumps

Technical Features

Hydraulic Diaphragm Metering Pumps
Flow Rate up to 660 l/h
Pressure up to 124 bar
Material of
pump head
SS 316L, PP, PVDF and PVC-U
Stroke Length 10 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

Key Product Features
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.