Mechanical Diaphragm Pumps
Milton Roy PRIMEROYAL Models PK / PKG API675 Metering Pump
PRIMEROYAL PK/PKG variable-eccentric metering pumps: up to 2,500 L/h and 930 bar; modular liquid ends (packed plunger NX/N&UT, HPD, GSD, metallic M); ±1% accuracy (10–100%), API 675. PKG supports GSD liquid ends.
Max flow
up to 2,500 L/h (single head, 50 Hz; GSD Ø100 inside point)
Max pressure
up to 930 bar (; inside plunger N Ø7.9 can see 690 bar)
Turndown / accuracy
rated flow 10%–100% range inside ±1%
Wetted materials
—
Protection
—
Power
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Features
- Brochure: up to 2,500 L/h and 930 bar (50 Hz)
- Variable eccentric drive; capacity adjustable running or stopped
- Thrust 475 daN; 100% stroke 40 mm
- Liquid ends: packed plunger NX/N&UT, PTFE HPD/GSD, metallic M
- GSD liquid end with compact footprint and IMI dosing monitor (PKG)
- API 675; ATEX / low-temperature options
Specifications
| Flow | up to 2,500 L/h (single head, 50 Hz; GSD Ø100 inside point) |
| Max pressure | up to 930 bar (; inside plunger N Ø7.9 can see 690 bar) |
| Thrust | 475 daN |
| Stroke length | 40 mm (100% stroke) |
| Liquid ends | plunger NX / N&UT; PTFE diaphragm HPD / GSD; metal diaphragm M; PK and PKG (GSD) |
| Accuracy | rated flow 10%–100% range inside ±1% |
| 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 | |
| PK-NX-Ø10 | 26.1 L/h @10 bar；19.9 L/h @Pmax | 600 bar | plunger liquid end P4(NX); SV 3.1 cm³; 144 spm / 1440 rpm | |
| PK-NX-Ø12 | 37.5 / 31.7 L/h | 400 bar | NX；Ø12；SV 4.5 cm³ | |
| PK-N-Ø7.9 | 14.4 L/h @10 bar；9 L/h @Pmax | 690 bar | plunger N; inside high pressure point 690 bar | |
| PK-N-Ø25.4 | 168 / 162 L/h | 88 bar | plunger N; Ø25.4 | |
| PK-N-Ø88.9 | 2,062 L/h @Pmax | 6 bar | plunger N large bore; inside approx. 2,062 L/h | |
| PK-HPD-Ø20-H | 120 / 107 L/h | 96 bar | HPD metal H; Ø20; 180 spm | |
| PK-HPD-Ø32-P | 330 L/h | 10 bar | HPD plastic P | |
| PKG-GSD-Ø100-H | 2,500 L/h @Pmax | 5 bar | GSD metal H; Ø100; max flow point 2,500 L/h | |
| PKG-GSD-Ø63-H | 1,238 / 1,219 L/h | 15 bar | GSD metal H; Ø63 | |
| PK-M-Ø8 | 20 / 14.1 L/h | 500 bar | metal single diaphragm M; Ø8 |
Dimensions & installation
Dimensional drawings available on request (CAD / PDF).
Downloads
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