High Performance Diaphragm

• Flow Range: 2.0 – 14 gph (7.6 – 53 lph)
• Maximum Pressure: 3,625 psig (250 bar g)

General Specifications:

• +/- 1% Steady State Accuracy over a 10:1 Turndown (w/constant speed drive)
• Continuous Duty / Severe Service Design
• Polar Crank Drive Design
• Rugged Cast Iron Gear Housing
• Modular Design Replaces PP and DD liquid Ends
• Multiplex Capability
• Variable Stroke Length (non-last motion)
• Integral Pressure Lubrication System
• Hydraulically Actuated Metallic Diaphragm
• Mechanically Actuated Refill Valve (MARS)
• No Process Side Contour Plate
• Process Side Bleeder Valve Fitting
• Double Ball Check Valves
• Pressures up to 3,625 psig (250 bar g)
• Flows up to 2.0 – 14 gph (7.6 – 53 lph)
• Meets API Standard 675

Packed Plunger

• Max. Pressure: 15,000 psig
• Flow Range: 0.033 GPH – 3,200 GPH

General Specifications:

• +/- 1% Steady State Accuracy over a 10:1 Turndown (w/constant speed drive)
• Continuous Duty / Severe Service Design
• Polar Crank Drive Design
• Rugged Cast Iron Gear Housing
• Modular Design
• Multiplex Capability
• Variable Stroke Length (non-last motion)
• Integral Pressure Lubrication System
• Double Ball Check Valves
• Pressures up to 10,000 psig (690 bar g)
• Flows up to 1,225 gph (4,637 lph)
• Meets API Standard 675

High Performance Diaphragm

• Flow Range: 0.11 l/h to 345 l/h (100% – 50 Hz)
• Maximum Pressure: 500 bar

Technical Characteristics:

MILROYAL® D pumps were specifically developed to produce micro flow rates at medium and very high pressures.
Their flow rate/pressure performance 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.

• Flowrates: from 0.11 l/h to 345 l/h (100% – 50 Hz)
• Maximum pressure: 500 bar
• Maximum temperature of pumped fluids: +110 °C
• Available liquid ends version: Packed plunger version, Metal version with metal diaphragm, 316L stainless steel or PVC version with
• single or double diaphragm (HPD)
• Adjustment while running or stopped, from 0 to 100% of nominal flow rate
• Accurate to within ± 1% – API 675-compliant

Hydraulic diaphragm pumps

• Max. Pressure: 600 psig
• Flow Range: 0.5 GPH to 130 GPH

Economical and robust. Designed for ease of maintenance and start-up, the Milroyal G features a robust HPD-style hydraulically actuated diaphragm liquid end coupled to a variable eccentric drive.

The absence of contour plates in this liquid end results in “straight-thru” flow ideal for handling polymers and slurries. A unique integral 3-function valve allows for purging of any entrapped gases in the hydraulic oil without disturbing the relief valve setting. Also integral to the liquid end is a site glass for visual indication of a relief condition in the hydraulic system. The smooth sinusoidal flow produced by the variable eccentric drive minimizes flow pulsations and mechanical shock to system components.

Product Features:

• HPD liquid end design eliminates contour plates.
• Double diaphragm w/leak detection available (10/98).
• Liquid End Materials: PVC, PVDF, 316SS.
• High viscosity and slurry liquid end options.
• 56C face and IEC motor options
• Integral 3-function valve in hydraulic oil system: automatic airbleed, safety/relief valve, purge button.
• Non-lost motion drive design minimizes flow pulsations and mechanical shock.
• AC & DC variable speed drives available for automatic control from a 4 – 20 ma signal.
• Recommended Service Intervals: 8000 hours when operating at full rated pressure