MAAG CSC-149
Machine overview & summary
Used MAAG Continuous Screen Changer
Model: CSC-149 (CSC series, double-piston continuous screen changer).
Serial / nameplate data you provided: Manufacture Aug-2018, Drawing 134.5436.901, SAP 724104, Serial VA18067 / 50163718, Capacity ~3,000 lb/hr (≈1,360 kg/hr), 100 mesh screen, Breaker plate Class 1, Mount Pos POS-1, HPU 14 GPM. The CSC-149 corresponds to MAAG’s ~148 mm piston size family in the CSC product line (see MAAG throughput/area tables below).
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Key specifications (MAAG published & unit nameplate)
- Manufacturer: MAAG (Maag Pump Systems / Maag Automatik).
- Model: CSC-149 (CSC series — double-piston continuous screen changer)
- Serial / Plate: VA18067 / 50163718 (as photographed)
- Drawing No.: 134.5436.901 (as provided)
- Manufacture Date: Aug-2018 (nameplate)
- Nominal throughput (your plate): 3,000 lb/hr (~1,360 kg/hr) — matches MAAG’s 148 size throughput range for CSC classic/PE variants.
- Screen / Filtration: 100 mesh (nameplate)
- Breaker plate: Class 1 (nameplate)
- Mount position: POS-1 (nameplate)
- HPU (hydraulic power unit) capacity: 14 GPM (nameplate) — used to operate the pistons/switching.
- Typical CSC-148 (MAAG published) screening details (for reference): Screen diameter 148.3 mm; filtration area (classic) 2 × 173 cm²; throughput ranges depend on engineering variant — Classic ~500–1,400 kg/h, PE variant up to ~1,100–3,200 kg/h and R versions even larger. Your 1,360 kg/h figure fits comfortably in the CSC-148 / PE throughput window.
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MAAG published performance / limits (from MAAG CSC datasheet)
- Application temperature: up to 350 °C (typical CSC versions). Operating pressure (standard): 500 bar (typical published limit for CSC classic). Option: high-pressure up to 700 bar available as an upgrade on some executions.
- Pressure differential (ΔP): up to 200 bar for high-pressure breaker plates (classic / PE). Standard ΔP limits vary by design (MAAG datasheet lists pressure differential ratings and options).
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Dimensions & weight
- MAAG datasheets give piston/screen diameters, filter areas and throughput ranges but do not publish a single standard “weight” for every model because configurations (heater jackets, support frames, HPU, special coatings, candle filters, etc.) vary. Example market references for similarly sized CSC 148/230 show typical installed weights in the ~700–1,650 lb (320–750 kg) range depending on execution (heater jackets, support frame, HPU included). Use the table below as an estimate only — confirm exact weight/dimensions when quoting transport/lifting.
- Typical filtration area (CSC-148, classic): 2 × 173 cm² (≈346 cm² total active area).
- Typical throughput windows (examples):
- CSC classic 148: ~500–1,400 kg/h (≈1,100–3,080 lb/hr).
- CSC PE 148: ~1,100–3,200 kg/h (≈2,420–7,050 lb/hr).
- Typical installed weight (installed unit w/ HPU & base): ~700–1,650 lb (rough market reference; confirm).
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What it does
The MAAG CSC (continuous screen changer) performs continuous melt filtration for thermoplastic melts. Using a sealless double-piston design, it allows one piston (or pocket) to be taken out/cleaned while the other continues filtering — therefore the production line never needs to stop for a screen change. It removes gels, debris and contaminant particles from the melt stream to protect downstream gear pumps, pelletizers and dies, and to improve product quality.
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Core functions & capabilities
- Continuous filtration (no production stop during screen change).
- Filtration fineness to 100 mesh (as fitted). (Screen packages can be customized.)
- Breaker plate assembly to hold screen packs in position and control melt flow.
- Hydraulic piston switching (driven by an HPU — your unit lists 14 GPM).
- Short melt residence time and sealless piston design for leak-free operation and reduced degradation risk.
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Design features & benefits
- Sealless double-piston design — very low leakage risk and high reliability
- Compact mounting & short melt-residence — can be mounted directly to downstream equipment to minimize dead volume
- Multiple configurations — Classic, PE (area optimized), R (large area / curved screens), candle filter versions and optional backflush or high-pressure packages.
- Upgradable — options for higher pressure (up to 700 bar), high-temperature finishes, special coatings, and stainless steel designs for aggressive applications.
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Typical applications & industries
- Polymer compounding (masterbatch, fillers, additives).
- Film/sheet extrusion, pipe/profile extrusion, fiber production.
- Pelletizing and strand/pellet lines.
- Recycling (re-process and filtration of regrind).
- Hot-melt adhesives and other high-temperature polymer processing where continuous filtration is required.
Full spec data
MAAG’s CSC literature gives general specs; for the CSC-149 specifically:
Filtration area: 2 × 149 cm² per screen (hence the “149” in CSC-149)
Max melt pressure: up to 500 bar (~7,250 psi) depending on polymer, breaker plate & screen pack
Max melt temperature: up to 350 °C (662 °F) standard; higher with special materials
Hydraulic pressure for actuation: ~200 bar (~2,900 psi) typical
Weight: ~600–700 kg (screen changer block only); with HPU ~900–1,000 kg
Dimensions (screen changer block): approx. 1,100 mm L × 550 mm W × 600 mm H (43″×22″×24″); your tape measure photos line up with this footprint
Breaker plate diameter: ~150 mm (5.9″); your measurement shows the twin flow ports around 6–7″ center-to-center
Connection ports: DIN or ANSI flanges; double-oval melt channel pattern visible