MILROYAL^® D pumps were specifically developed to produce micro flow rates at medium and very high pressures.
Their flow rate/pressure performance, ranging from 0.11 l/h to 345 l/h / 500 bar, means that they can be used for numerous applications with dosing accuracy of ±1%.

MILROYAL^® D pumps are particularly rugged and can operate in the severest of conditions, such as on offshore platforms, in the desert, etc., and the oil bath gives moving parts an exceptionally long service life.

 TYPICAL APPLICATIONS

Oil and Gas
Extraction: injection of corrosion inhibitor in the wellhead or in pipelines                                                                                Gas treatment: gas odorization, injection of mercaptan, or THT                                                                                       Refineries: injection of additives into fuel, injection of catalysts

Industry
Boiler water treatment: of make-up, circuit and discharge water (injection of corrosion inhibiter, biocides, anti-foaming agent, scale inhibitor, etc.)

Energy
Water treatment in utilities: Injection of corrosion inhibitor (phosphate), hydrazine, ammonia

Papermaking pulp coloring                                                                                                                                         Injection of dye ink

ADVANTAGES

Micro flow rates and high pressure

• Dosing from 0.11 l/h
• Maximum pressure: 500 bar
• Half a century of experience in micrometric flow rates

Unrivalled design

• API 675-compliant
• Exceptional moving part service life (oil bath)
• Diaphragm dosing pumps:
  • Integrated safety valve protects the pump fully against any overpressure
  • Double or Triple diaphragm options ensure high levels of safety for users, the process and the environment
• Operation in the severest of conditions for instance when integrated in a chemical injection package 

Available liquid ends
DSD^® technology version    

• Liquid end with Dynamic Stiffness Diaphragm
• Available in PVC, PVDF or 316L stainless steel
• Low flow injection of highly concentrated chemicals
• Injection of viscous products up to 5000 cP
• Plastic liquid end up to 35 bar
• High suction lift up to 6 wmc
• Reduced maintenance costs : long service life rigid diaphragm, very few liquid end components, just 40 ml of oil in liquid end
• Internal six-function valve

1. Safety valve

2. Admission valve

3. Air bleed

4. Oil tank - just 40 ml

5. Visual overpressure indication

6. Visual oil level indication

Packed plunger version

• Suitable for high pressures and high temperatures
• Single packing as standard, optional double packing with flushing ring
• Wide range of versions in terms of construction materials, size and performance

Metal version with metal diaphragm

• Completely leakproof by means of metal/metal contact (diaphragms/valves)
• Suitable for very high pressures
• Suitable for specific products such as radioactive or diffusing liquids
• Differential safety valve with integrated air bleed valve (patented). Adjustable pressure setting
• Assembly designed for service life in excess of 10,000 hours
• Oil compensation valve with adjustable pressure setting

316L stainless steel or PVC version with single or double diaphragm (HPD)

• Completely leakproof
• Moulded, preformed PTFE/elastomer composite diaphragm
• Patented reusable diaphragm. Service life in excess of 20,000 hours depending on the type of product pumped, service and installation conditions
• Safety valve with integrated air bleed valve (patented). Adjustable pressure setting
• MARS hydraulic fluid compensation valve (patented)

Possible options

• Materials compliant with offshore use of the pump
• Sandstorm protection
• Motor for frequency variation, NEMA mounting, explosion-proof, for specific ambient temperatures
• Liquid end materials on request
• Screwed or flanged connectors (ANSI, DIN or ISO)
• Special valves for any type of fluid
• Electronic or pneumatic actuators
• Stroke counter
• Multiplexing possible up to 10 heads
• DosaSkid®, plug-and-play dosing solution

Our outstanding team of engineers and technicians:

• Advises you on choosing the most suitable pump for your requirement
• Provides you with a turnkey solution for your specific applications
• Provides you with personalised project management
• Advises you on the optimum installation of your pump
• Supports you during the installation and commissioning of your pump
• Helps you optimise your maintenance operations
• Repairs your pump within 48 hours, anywhere in the world
   

Unequalled documentation and testing service

• A large number of tests can be carried out (hydrostatic, vibration, noise, X-ray, etc.)
• Manufacturer's documentation (materials certificates, drawings with parts lists, etc.)
• The documentation provided can be adapted to your specifications, on request