
Hydraulic Metering Pumps
Milton Roy MAXROY B Series Hydraulic Diaphragm Metering Pump
MAXROY B compact hydraulic diaphragm metering pump: up to 1,100 L/h at 10 bar; ±1% steady-state accuracy (10–100% stroke), API 675; PVC/316SS liquid ends, multiplex and double-diaphragm rupture detection options.
Max flow
max. up to 1,100 L/h (; inside B145@180 spm approx. 1,051 L/h @10 bar)
Max pressure
10 bar
Turndown / accuracy
±1% (10%~100% adjustment range)
Wetted materials
—
Protection
—
Power
—
Features
- Flow up to 1,100 L/h, pressure up to 10 bar
- ±1% steady-state accuracy (10–100% stroke range)
- Built-in relief valve for overpressure protection
- PTFE/elastomer composite diaphragm (~20,000 h typical life)
- Oil-bath lubrication, compact footprint, multiplexable
- API 675; optional double-diaphragm rupture detection and electric/pneumatic/VFD control
Specifications
| Flow | max. up to 1,100 L/h (; inside B145@180 spm approx. 1,051 L/h @10 bar) |
| Max pressure | 10 bar |
| Accuracy | ±1% (10%~100% adjustment range) |
| Stroke range | 0~100% |
| Fluid temperature | metal liquid end +90°C; plastic liquid end +50°C |
| Liquid ends | PVC plastic / 316SS metal; diaphragm Ø145 mm; plunger Ø66.5 mm |
| Standard | API 675 |
| Brand | m Milton Roy |
Applications
Materials & media
Ask for wetted-parts details or check the brochure.
Common chemicals: NaOCl, acids, alkalis, polymers — confirm compatibility when inquiring.
Controls & communication
Control options are listed in notes or confirmed on inquiry.
Models & specs
| Model | Flow | Pressure | Notes | |
| MAXROY B145 @58 spm | 363 L/h @10 bar | 10 bar | ratio 1/25; plunger Ø66.5 mm; diaphragm Ø145 mm; stroke 118.1 cm³; PVC/ metal flow | |
| MAXROY B145 @96 spm | 621 L/h @10 bar | 10 bar | ratio 1/15 | |
| MAXROY B145 @144 spm | 860 L/h @10 bar | 10 bar | ratio 1/10 | |
| MAXROY B145 @180 spm | 1,051 L/h @10 bar | 10 bar | ratio 1/8; series max. approx. 1,100 L/h; note: with 60 Hz motor |
Dimensions & installation
Dimensional drawings available on request (CAD / PDF).
Downloads
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