High-Performance Metering Pumps for Precise and Reliable Fluid Control
The Centrac B Series features high-performance hydraulic diaphragm metering pumps designed for precise chemical dosing in demanding industrial environments. With 100:1 turndown, 0.5% steady-state accuracy, and advanced motor control, these pumps deliver unmatched reliability and control.
Why Choose Us?
Centrac B pumps are built for precision, durability, and flexibility. With up to 0.5% accuracy and a 100:1 turndown ratio, they deliver consistent performance across a wide range of flow rates. Designed with a rugged scotch yoke drive and oil-submerged moving parts, they ensure long-lasting reliability in tough industrial conditions. The pumps are available in various configurations, including Simplex and Duplex, and support both AC and DC motor control with 4–20 mA input and feedback signals for easy automation. With flow capacities up to 550 GPH and pressures up to 2290 PSIG, Centrac B is ideal for demanding chemical dosing applications. Enclosure and motor options, including explosion-proof and corrosion-resistant materials, make it suitable for harsh environments.
CENTRAC B PUMPS
Advanced Metering Pump Technology
The Centrac B Series by Milton Roy is a high-performance hydraulic diaphragm metering pump designed for accurate and reliable chemical dosing in industrial applications. Featuring a rugged helical gear and scotch yoke drive, all moving components are fully submerged in oil for smooth and durable operation. With a wide capacity range—from 37 to 550 GPH—and discharge pressures up to 2290 PSIG, Centrac B pumps are suitable for a variety of demanding processes. Available in Simplex or Duplex configurations, each unit delivers exceptional precision with up to 0.5% steady-state accuracy and a 100:1 turndown ratio. Advanced electronic drives, both AC and DC, allow for seamless integration with process control systems. Built with robust materials and motor options including explosion-proof configurations, Centrac B ensures long-term reliability even in harsh environments.
0.5% steady-state accuracy
100:1 turndown ratio
Helical gear and scotch yoke drive
Oil-submerged moving parts
Flow rates from 37 to 550 GPH
Pressure ratings up to 2290 PSIG
Simplex and Duplex configurations
Multiple plunger sizes and materials
AC/DC variable speed drive options
4–20 mA input and feedback signal
TENV and explosion-proof motor options
NEMA 4X Fiberglass and 316SS enclosures
Compact, efficient design
Drive System
Helical Gear with Scotch Yoke
All moving parts submerged in oil
Liquid End
High-Performance Diaphragm (Hydraulically Balanced)
Simplex or Duplex Configuration
Flow Capacity (Per Head)
550 GPH @ 185 PSIG
37 GPH @ 2290 PSIG
Maximum Stroking Speed
162 SPM
Accuracy
±0.5% Steady-State Over 100:1 Turndown
Capacity Control Options
DC: Electronic Variable Speed Drive (100:1 Turndown)
AC: Electronic Variable Frequency Drive (100:1 Turndown)
Motor Voltage Options
230V / 460V AC, 3 Phase, 50/60 Hz
230V AC, 1 Phase (up to 4 HP)
Control Signal
Input: 4–20 mA (Direct or Reverse Acting, Split Range Configurable)
Feedback: 4–20 mA
Distance Limits
Controller to Motor: Up to 250 ft
Operator Station to Controller: Up to 5000 ft
Duty Cycle
Continuous
Materials of Construction (Liquid End)
316 SS, Alloy 20, HAS C22, PVC
PTFE/Elastomer Bonded Diaphragm
Operating Temperature
Metallic Heads: 10°F to 194°F
Plastic Heads: 10°F to 140°F
Maximum Suction Pressure
Up to 100 PSIG (varies by plunger size)
Weight (Approx.)
Simplex: 455 lbs
Duplex: 640 lbs
Enclosure Options
Chassis Mount
NEMA 4X Fiberglass
NEMA 4X 316SS
Motor Types
Servo DC TENV (Standard)
Explosion-Proof (Optional)
AC Vector Duty Motor (Optional)
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