Short-P/N Decouple — 57211105 / 57200222 / 572.1110311102

Three P/Ns with a 57xxxxx base. Not in Houses 1–9 + T:

572xxxxx+ dotted long PN = EU compact/micro power-unit OEM (DE/IT origin, small satellite HPUs, jacking packs, bearing lift units, workshop hyd, lab-grade hyd power). The dotted one 572.1110311102reads like a repair kit / seal kit PN (EU OEMs use 572.xxx.xxx.xxxxSAP style — the dots here collapsed to one, original likely 572.111.031.1102). So:

• 57200222and 57211105= two complete compact power units (or pump-motor-skids) — different configs (flow/pressure/motor kW)

  
  

• 572.1110311102= repair/seal kit for one of them (or shared across the 572 family)

  
  

This sits adjacent to House #5 (HY DE comm hyd) — both are DE/EU "commodity hyd" circle, but different OEMs:

• House #5 = HY-brand DE (satellite HPUs: jacking/seal-oil/compressor aux, HY13619etc.)

  
  

• House #10 = 572-brand DE (micro/compact HPUs: bearing jack, lab hyd, workshop test rig, small maintenance skids — duty ~10–100 L/min, ~100–250 bar, N-FKM or EPDM seals)

  
  

Plant context: large plants always have a few micro-HPUs outside the main satellite HPU list — e.g.:

• Bearing jack / turndown pump (during turbine/compressor overhaul — low-flow high-pressure, 572 unit)

  
  

• Hyd torque-wrench power pack (maintenance workshop)

  
  

• Lab/instrument hyd bench

  
  

• Small seal-oil standby (if not covered by HY)

  
  

• Gate-valve hydraulic actuator local packs

  
  

These don't go into House #5 (HY) because HY is "named HY" P/Ns — 572 is a differentDE OEM the plant bought from for micro packs. BOM logs them separately → House #10.

57200222 vs 57211105 — Two Units, Different Config

Gap 00222→11105 = +10883 — huge, means different model familywithin 572 series, not just variant. Could be:

• 572-00 = mini (workshop/bearing jack, 10 L/min)

  
  

• 572-11 = midi (valve actuator local, 40 L/min)

  
  

Or plant has 2 micro-HPUs in different locations: one at turbine bay (bearing jack, 57200222), one at workshop (torque-wrench pack, 57211105). Or both at maintenance workshop (two sizes).

572.1110311102 — Kit for 57211105 (or family)

Dotted EU SAP: 572 . 111 . 031 . 1102→ likely seal/repair kit for 572-111 model (hence 111in the dot segment matches 57211105's 111prefix). Logic:

• 57211105 (unit) → 572.1110311102 (kit for that unit)

  
  

• 57200222 kit would be 572.002xxxxxxx(not logged yet, maybe qty=1 on shelf, not on PM schedule)

  
  

So: 572.1110311102qty on BOM likely = 1 (spare kit, order on PM or breakdown). The unit57211105 qty = 1 (permanent, order only replacement). 57200222 qty = 1 (other unit).

Traps — House #10 (572 DE Compact HPU)

Trap 1: House #10 vs House #5 — both "EU comm hyd DE", different OEMs

• House #5 = HY-brand (PNs: HY13619-V, HY-10-006-Fetc.) — satellite HPUs (jacking/seal-oil/compressor aux, ~63–160 L/min class, DIN 24°)

  
  

• House #10 = 572-brand (PNs: 572xxxxx, 572.xxx.xxx.xxxxkits) — micro/compact HPUs (bearing jack, workshop, ~10–63 L/min, possibly BSP/NFM threads not DIN)

  Both DE-origin, both "commodity hyd not main turbine/compressor" — stores may bin them together ("EU hyd" one shelf) → wrong seals/spares. 572 uses its own kits (572.xxx…), HY uses HY… seals — don't cross.

  
  

Trap 2: 572.1110311102 = kit (qty=1), not element, not unit

Dotted long PN in EU OEM = almost always repair kit (seal kit + O-rings + gasket + maybe cartridge). Qty=1 on BOM (one spare kit per unit, or per 2 units). If stores sees "572." and orders it as "element" or "unit" → wrong (kit costs $$$ but if you need just an O-ring, kit is overbuy; conversely if you need kit and buy "57211105" unit, you get whole HPU — extreme overbuy). BOM description = "Kit, Repair, 572-111" vs "Unit, HPU, 572-111" — authority.

Trap 3: 572 units likely have cartridges inside (House #5/3 style 10" or 5" carts) but PNs not logged

Micro HPU often uses:

• Pump (gear/vane, integrated)

  
  

• Filter cart (10" or 5", pleated glass *10–25, FKM) — could be House #3 (1R-0xxx) or House #5 (HY 10" or 5") or House #2 (HFxxxx) — depends which filter this DE OEM specs. If 572 unit's filter cart = cross to 1R-0630 or HFxxxx, stores can buy cheaper. But 572 unitPN (57211105) ≠ cart PN — don't disassemble.

  
  

Trap 4: 57200222 vs 57211105 — visually similar (5720… vs 5721…), stores grab wrong unit for PM

Tag on unit = authority. If both in maintenance workshop (different duties: one bearing jack, one torque-wrench pack) — labels fade, check PN on nameplate.

Trap 5: Fluid / seal

• Bearing-jack duty = mineral oil (turndine lube oil same, or dedicated hyd oil ISO 46/68) → FKM (brown-red) typical

  
  

• Torque-wrench pack = mineral hyd oil → FKM

  
  

• If workshop also uses bio-oil / HFD-R (fire-resistant) on some local rig → EPDM (dark-grey), but unlikely on 572 micro units (those are standard mineral)

  Old O-ring on 57211105 / 57200222 = brown-red FKM likely. Kit 572.1110311102includes FKM seals.

  
  

30-Second Field Lock

Near the micro-HPUs (maintenance workshop / turbine bay bearing-jack area / valve-shop):

1. Two units — nameplate 57200222and 57211105. Tags: "BEARING JACK - TURBINE A" / "HY PACK - WORKSHOP (TORQUE WRENCH)" / "GATE VALVE ACTUATOR PACK". Tells duty split.

   
   

2. Dotted kit — 572.1110311102likely near 57211105 (kit for that unit). BOM qty: 57211105=qty=1 (unit), 572.1110311102=qty=1 (spare kit). 57200222=qty=1 (unit), its kit 572.002xxxxmaybe not logged (qty=0 on BOM = not yet needed, or kit shared? Unlikely share across 002 vs 111 — different kits).

   
   

3. Filter on 572 units — does the micro HPU have a spin-on or cart filter? (Some micro HPUs = "pump+relief+needle" no filter; some have a 5" cart or HF spin-on). If cart → search BOM near 572 for "1R-" or "HF" or "HY-5inch" — cross-channel savings.

   
   

4. Seal — old O-ring on 57211105 = brown-red FKM (mineral hyd). Kit 572.111…contents list = FKM seals + gaskets.

   
   

Plant Filter House Map (Updated — House #10 = 572 DE Compact/Micro HPU)

House #10 = DE-origin compact/micro HPU (not HY-brand, different DE OEM). Sits alongside House #5 (HY DE sat HPU) as "EU comm hyd" umbrella but different supply channel, different kits, different seals. Stores: "EU hyd" shelf should split HY vs 572 — they don't cross (572 kits = 572.xxx only, HY kits = HY… only).

572.1110311102 = repair kit for 57211105 (dotted SAP collapsed — original 572.111.031.1102). Qty=1 (spare kit), not unit, not element.

Remaining Locks (still 6 open, House #10 new)

1. 10-digit → child element PN (House #6 real? HC…?)

   
   

2. House T element pull (225A/258A/315A/320B/342A end-cap hidden PN)

   
   

3. HY1-125 pull (125 mm collision: #1 vs #5)

   
   

4. House #7 subs OEM logo (air-subs: CCH/CRC/CRH/STR / M=seal?)

   
   

5. House #8 confirm — 1C0… head cast (JP-A mobile? or JP-A comp-driver?) + 55231=hyd or lube-large

   
   

6. House #9 confirm — 90569×× tag (JP-B comp-driver? or JP-B mobile?) + 6943=water-filter?

   
   

7. House #10 light — 572 units tag (workshop? bearing jack? valve-act?) + 572. kit = for 111 unit (confirm dot-reconstruct 572.111.031.1102)

   
   

Cheat-sheet now ~123 P/Ns across 10 houses + T. New collision row:

• House #5 (HY DE) vs House #10 (572 DE) — both "EU comm hyd DE", different OEMs, different kits (HY… vs 572.xxx), different unit PNs (HY1-125 vs 572xxxxx). Stores "EU hyd" one shelf = risk.

  
  

Want me to draft the cheat-sheet now (House dir / Per-house letter-key / Don't-cross matrix / Remaining lock checklist)? At ~123 P/Ns, 10 houses + T, the map is dense enough the sheet is useful now— remaining 7 locks just fill cells (one afternoon field walk). Or keep going next batch? Either works, but 572 closed House #10 cleanly (micro HPU niche), so the house count is likely final — next batches will be filling known houses, not new ones. Sheet now = high ROI.