Models SHS-FLT-60 · FLT-100 · FLT-150
Built for flow, not just filtration — 60 to 150 lpm at up to 28 bar, with two-stage 25 µm + 10 µm filtration and a sampling valve to ISO 4021 so a clean system can be proved and recorded.
What flushing does
Pipework, manifolds and reservoirs leave the fabrication shop carrying weld spatter, mill scale, swarf, thread sealant and dust. None of it comes out by filling the system and running it. It comes out by pushing oil through the pipework fast enough to lift settled debris off the bore wall and carry it to a filter.
Oil moving slowly runs in smooth layers and slides over debris without disturbing it. Only when the flow becomes turbulent does it scour the wall. The FLT series is built for that duty: enough flow to reach turbulence in the bore being cleaned, enough pressure to push through the system's own valves and coolers, and two filter stages to hold what comes loose.
Where it is used
Specification
| Parameter | FLT-60 | FLT-100 | FLT-150 |
|---|---|---|---|
| Delivered flow at 28 bar | 60 lpm | 100 lpm | 150 lpm |
| Maximum working pressure | 28 bar | 28 bar | 28 bar |
| Relief valve setting | 30 bar | 30 bar | 30 bar |
| Electric motor | 4.0 kW | 7.5 kW | 11 kW |
| Full-load current at 415 V | 8.5 A | 15.5 A | 22 A |
| Starting | Direct on line | Star-delta | Star-delta |
| Suction connection / hose bore | 1½" | 2" | 2" |
| Delivery connection / hose bore | 1" | 1¼" | 1½" |
| Max viscosity at start-up | 150 cSt | 120 cSt | 100 cSt |
| Chassis | Four wheel | Four wheel | Four wheel |
| H × W × D (mm) | 1100×700×600 | 1200×800×700 | 1300×900×750 |
| Dry weight (no oil) | 140 kg | 200 kg | 260 kg |
Common to all three models
The unit has no tank and no heater — it draws from the system being flushed and returns to it. Hose set is 5 m suction / 10 m delivery as standard; delivery hose is wire-reinforced and rated not less than four times working pressure.
Sizing
Debris lifts only when flow in the pipe is turbulent (Reynolds number ~4000). Select on the largest bore to be flushed and the oil temperature — not on the reservoir size.
| Pipe bore | Oil at 20 cSt (~60 °C) | Oil at 32 cSt (~45 °C) | Oil at 46 cSt (~40 °C) |
|---|---|---|---|
| 12 mm (~⅜") | 45 | 72 | 104 |
| 19 mm (~¾") | 72 | 115 | 165 |
| 25 mm (~1") | 94 | 151 | 217 |
| 32 mm (~1¼") | 121 | 193 | 277 |
| 38 mm (~1½") | 143 | 229 | 330 |
Temperature does most of the work: taking oil from 40 °C to 60 °C roughly halves the flow needed. Warm oil flushes; cold oil circulates. Working range on warm oil (20 cSt): FLT-60 up to ~16 mm bore, FLT-100 up to ~26 mm, FLT-150 up to ~40 mm. Above that, flush the circuit in sections.
Cleanliness targets
Agree the ISO 4406 target in writing before the job starts, together with who samples, who tests, and what happens if the target is not met. Stop when two consecutive samples meet the target — not when the first one does.
| System built around | ISO 4406 target |
|---|---|
| Servo valves | 16/14/11 |
| Proportional valves | 17/15/12 |
| Piston & vane pumps | 18/16/13 |
| Directional & pressure valves | 18/16/13 |
| Gear pumps & motors | 19/17/14 |
| Cylinders & flow controls | 20/18/15 |
How to order
Example: FLT60-25Q-10Q-N-S — 60 lpm at 28 bar, 25 µm stage 1, 10 µm stage 2, nitrile seals, 5 m suction / 10 m delivery.
| Model | FLT60 · FLT100 · FLT150 |
|---|---|
| Stage 1 | 25Q — 25 µm · 10Q — 10 µm |
| Stage 2 | 10Q — 10 µm · 25Q — 25 µm |
| Seal | N — nitrile · V — fluorocarbon |
| Hose set | S — 5 m / 10 m · X — special |
Replacement elements
| SHS-FE-25Q | Element, stage 1, 25 µm |
| SHS-FE-10Q | Element, stage 2, 10 µm |
| SHS-FS-STR | Suction strainer screen |
| SHS-FK-SEAL | Housing seal kit, both stages |
| SHS-FH-SET | Hose set, 5 m suction + 10 m delivery |
Each unit is manufactured and tested against an approved QA plan and inspection & test plan — flow at rated pressure, relief setting, pressure hold & leak, differential indicators, insulation & earth continuity, two-hour run. Customer-witnessed or third-party inspection can be arranged at order stage.
Questions
Filtering needs a filter; flushing needs flow. Debris only lifts off a pipe wall when flow is turbulent. The FLT series delivers the flow to reach turbulence and a two-stage filter to hold what comes loose — a different duty from the filtration trolley.
Select on the largest bore to be flushed and the oil temperature, not the reservoir size. On warm oil: FLT-60 up to ~16 mm, FLT-100 up to ~26 mm, FLT-150 up to ~40 mm. Confirm bore and temperature and we'll confirm the model.
Each unit has a return-line sampling valve to ISO 4021. Sample under flow and stop when two consecutive samples meet the agreed ISO 4406 target.
Yes — bulk transfer and filtration between flushing jobs is a listed use. For routine oil conditioning of a running machine, the smaller SHS-PFT-30 filtration trolley is the right tool.
Commissioning a new system?
Tell us the largest bore to flush and the oil temperature during the job and we'll confirm the right FLT model.
