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Hydraulic Diaphragm Metering Pumps

Pressure and back pressure

High pressures are no problem in metering systems as long as there is something to counter them. ProMinent hydraulic diaphragm metering pumps therefore use a hydraulic fluid to create back pressure. The benefits this brings to the diaphragms become evident very quickly.

The industries in which ProMinent’s hydraulics technology is used:

  • Oil/gas production (onshore/offshore)
  • Refineries
  • Chemical / petrochemical industry
  • Pharmaceuticals & cosmetics
  • Food production
  • Packaging industry (bottling pumps)

What you can expect

The pumps run. They do this well and for a long time. Your hydraulic control is very precise and requires only minimal maintenance. The diaphragms are durable and provide consistently accurate metering. The technology also offers a very high standard of safety: there is a pressure relief valve in the hydraulic end as protection against overload. The multi-layer diaphragms are equipped with a diaphragm rupture warning system as standard. So you can be sure that the feed chemicals cannot mix with the hydraulic oil.

Pump Guide

The choice of pumps is huge: 80 industries, 100,000 products and infinite applications. To make it easy to find your ideal metering pump, ProMinent designed the Pump Guide. In just a few clicks you will find a selection of suitable models.

Here’s how it works

First enter the pump capacity and back pressure. The Pump Guide will then show you all the metering pumps that match your criteria. You can choose between list view and detail view. The database contains all solenoid metering pumps, motor-driven metering pumps, process metering pumps and peristaltic pumps from ProMinent. They are divided into more than 30 different product ranges.

Exactly the right pump

Narrow down your search by clicking on different selection criteria. Do you have a specific industry, operating mode, medium or viscosity in mind? Or maybe you need a pump for zones at risk of explosion? The Pump Guide will take you to the pump you need in just a few clicks.


Products

Hydraulic Diaphragm Metering Pump HYDRO API

Capacity range of single-head pump: 1.85 – 398 gph (7 – 1,506.5 l/h), 1,450 – 102 psi

The HYDRO API 675 is an extremely robust hydraulic diaphragm metering pump, which meets the most exacting safety requirements and is designed in accordance with API 675. This is ensured by the PTFE multi-layer diaphragm with diaphragm monitoring, the full-motion drive and automatic bleeding, for example. Its modular construction makes it extremely versatile. more

Features and Benefits

  • Multi-layer diaphragm (PTFE) with rupture warning system
  • Integrated hydraulic relief valve with ventilation
  • Metering reproducibility is better than ± 1 % in the 10 - 100 % stroke volume range under defined conditions and with proper installation
  • The modular construction with single and double head versions permits a wide range of applications, with the double head designs (boxer principle) being operated in push-pull mode
  • It is possible to combine up to 5 metering units, even with different pump capacities, in multiple pump systems
  • 5 different gear ratios are available
  • API 675 requirement full-motion drive and automatic bleeding

Hydraulic Diaphragm Metering Pump HYDRO Classic

Capacity range of single-head pump: 0.79 - 383 gph (3 – 1,450 l/h), 1,450 - 102 psi

As an extremely robust hydraulic diaphragm metering pump, the HYDRO range meets the most exacting safety requirements. Its modular construction, with either one or two dosing heads, 4 gear ratios, 2 dosing head sizes and 3 dosing head materials, offers a very high degree of flexibility in terms of areas of application. more

Features and Benefits

Excellent process safety and reliability:

  • PTFE multi-layer diaphragm with integral diaphragm rupture warning system
  • Integral hydraulic relief valve
  • Metering reproducibility is better than ± 1% within the 20-100% stroke volume range under defined conditions and with proper installation

Excellent flexibility:

  • The modular construction with single and double-head versions permits a wide range of applications, with the double head designs being operated in push-pull mode
  • It is possible to combine up to 5 metering units, even with different pump capacities, in multiple pump systems
  • 5 different gear ratios are available

Hydraulic Diaphragm Metering Pump Makro/ 5

Capacity range of single pump: 118.9 - 1,614 gph (450 – 6,108 l/h), 363 - 87 psi

The robust hydraulic diaphragm metering pump Makro/ 5 guarantees outstanding process reliability. Its modular construction offers extremely good flexibility and a large range of drive versions are available. more

Features and Benefits

Excellent process safety and reliability:

  • PTFE multi-layer diaphragm with integral diaphragm rupture warning system
  • Integral hydraulic relief valve
  • Metering reproducibility is better than ± 1% within the 10-100% stroke length range under defined conditions and with correct installation.

Excellent flexibility:

  • The modular construction with single and double-head versions permits a wide range of applications, with the double head designs being operated in push-pull mode
  • It is possible to combine up to 4 metering units, even with different pump capacities, in multiple pump systems
  • 5 different gear ratios are available
  • Customised designs are available on request

ORLITA Mf Hydraulic Diaphragm Metering Pump

Flows up to 2,200 gph (8,325 l/h) per head and pressures up to 11,350 psi

The hydraulic diaphragm metering pump ORLITA MF offers reliable dosing rates even under high pressure and has a modular construction, making it highly versatile. Thanks to its modular design, this pump is tailored to meet your requirements even at very high pump capacities. more

Features and Benefits

  • In Accordance with API 675
  • Accuracy ±0.5 %
  • Multiplexing Available
  • Flow rates to 2,200 gph per head
  • Temperatures from -40 to 300 ˚F (-40 to 150 ˚C)
  • Unique cone valves
  • PTFE double diaphragm
  • Diaphragm rupture control
  • Operating Pressures to 11,350 psi
  • Special connections as requested
  • Heating or Cooling jackets

Evolution Series

Flow rates from 0.79 to 1,955 gph per head. Operating pressures up to 5,800 psi

The ORLITA Evolution meets the most exacting safety requirements as an extremely robust hydraulic diaphragm metering pump. It is characterised by its PTFE multi-layer diaphragm with integral diaphragm rupture warning / signalling and unique diaphragm position control. more

Features and Benefits

  • Flow rates from 0.48 to 1932.48 gph per head
  • Operating Pressures up to 5802 psig
  • Variable eccentric drive for accurate, robust operation and a smaller footprint
  • Four frame sizes to cover a broad range of applications
  • PTFE multi-layer diaphragm with integral diaphragm rupture warning system is standard on all pumps
  • Liquid End Materials in 316ss and Alloy 20, additional materials available on demand
  • Exclusive Diaphragm Position Control protects the pump against operating faults (e.g., no damage in the event of a blockage on either the suction or discharge side). This advance in pump design technology means a more reliable metering pump in every application
  • Metering reproducibility is better than ±1 % within the 10 - 100 % stroke length range under defined conditions and with correct installation
  • Continuous air bleeding of the hydraulic oil chamber ensures reliable operation
  • Integral adjustable internal hydraulic pressure relief valve with features that allow for oil cooling during extended periods of process upset conditions
  • Excellent flexibility
  • The Evolution's modular compact construction allows for a wide range of applications
  • Up to five (5) metering units of identical or varying pump capacities can be multiplexed for the greatest application adaptability
  • A rotatable drive housing allows for installation of motor in a vertical or horizontal position to better meet specific footprint requirements
  • Custom designs are possible to meet a variety of application demands

Orlita Mh Series

0 - 211 gph (0 - 800 l/h) per pump head, max. pressure 58,000 psig (4,000 bar)

Particularly suitable for very high pressures. Exact adaptation of the pump to particular requirements because of modular design. more

Features and Benefits

  • In Accordance with API 675
  • Accuracy ±0.5 %
  • Multiplexing Available
  • Flow rates to 115 gph
  • Temperatures from -40 to 390 ˚F (-40 to 200 ˚C)
  • Unique cone valves
  • Stainless Steel diaphragm
  • Diaphragm rupture control
  • Operating Pressures to 43,500 psi
  • Special connections as requested
  • Heating or Cooling jackets

Hydraulic Metal Diaphragm Metering Pump ORLITA MHHP

Capacity range of single pump: 0.79 - 3.79 gph (3 – 11 l/h), 43,511 psi

The metal diaphragm metering pumps ORLITA MHHP are special pumps, which provide precise pump capacities even at maximum pressures of up to 43,512 psi. more

Features and Benefits

Excellent process reliability:

  • metal double diaphragm with integrated diaphragm rupture warning / signalling system ensures precise and low-wear operation even at very high pressure
  • The product chamber is hermetically separated from the hydraulic part
  • Integrated hydraulic relief valve and automatic bleed valve for the hydraulic chamber
  • Wear-free, valveless enforced anti-cavitation of the hydraulic leakage guarantees optimum dosing precision
  • Metering reproducibility is better than ± 0.5 % within the 10 – 100% stroke length range under defined conditions and with correct installation
  • Cone valves for use as suction and/or discharge valves with minimal wear, good self-cleaning and low pressure loss (NPSHR)

Hydraulic Diaphragm Metering Pump ORLITA Evolution E1Sa/E2Sa

Capacity range of single-head pump: 0.24 - 35 gph (0.9 – 134 l/h), 3,771 - 435 psi

As an extremely robust hydraulic diaphragm metering pump, the ORLITA Evolution E1Sa meets the most exacting safety requirements. It is characterised by its PTFE multi-layer diaphragm with integral diaphragm rupture warning / signalling system and unique diaphragm position control. more

Features and Benefits

Maximum process reliability:

  • PTFE multi-layer diaphragm with integral diaphragm rupture warning / signalling system
  • Integral hydraulic relief valve
  • The new diaphragm position control protects against impermissible operating statuses (e.g. no damage in the event of a blockage on the suction or discharge side)
  • Metering reproducibility is better than ± 1% within the 10-100% stroke length adjustment range under certain defined conditions and with proper installation
  • Continuous bleeding of the oil chamber ensures reliable operation

Hydraulic Diaphragm Metering Pump ProMus

Capacity range of 0.2 to 101.5 gph (0.87 to 384.2 l/h) at pressures up to 3,500 psi

The ProMinent ProMus is a motor driven metering pump with a hydraulically actuated Teflon diaphragm. The plunger and diaphragm are hydraulically coupled and are precisely controlled by a mechanically actuated replenishment valve, which senses diaphragm position to admit coupling fluid as needed. The coupling fluid is continuously degassed to maintain accuracy. The drive case is protected from overload by a simple acting relief valve. more

Features and Benefits

  • Hydraulically actuated diaphragm ensuring a sealed pumping system for corrosive or toxic chemicals with superior leak protection
  • Built in accordance with API 675 standards suitable for heavy industrial applications and specifications
  • Flexible design for a wide range of applications including water treatment and high-pressure chemical refining
  • Fast and Easy field maintenance with minimal downtime
  • Available in PVDF, Stainless Steel, Alloy 20, and Hastelloy C liquid end materials

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