In Brief
Feldbinder cement tankers used in bulk cement haulage wear through aeration pads and bottom fittings two to three times faster than trailers carrying plastic granulate. PHS Magnum maintains a parts stock in Chorula: polyamide aeration pads, shut-off valves, EPDM hatch seals. Courier delivery to PL/DE/CZ or on-site fitting available.
Tel: +48 602 716 551 · biuro@magnumchorula.pl
Why Cement Degrades Tankers Faster
Portland cement is not a neutral powder. It has a pH of 12–13 in contact with moisture and is strongly abrasive. Together, these two properties attack the rubber and plastic sealing components of a cement tanker:
Alkalinity degrades EPDM rubber within one to three years, shortening the service life of hatch seals and bottom discharge fittings. At pH above 11, EPDM gradually swells, then hardens and cracks.
Abrasiveness means fine cement particles are worked into the pores of the aeration pad during every discharge cycle. After 200–300 cycles, the pores are partially cemented, airflow drops, and discharge times increase.
Moisture in the tank compartment and in the air lines — even in minimal quantities — reacts with cement to form paste that blocks valves and discharge outlets.
Practical consequence: the parts replacement schedule for a cement tanker must be considerably shorter than for a trailer carrying plastic granulate or food-grade products.
Feldbinder Cement Tanker Parts – Overview and Service Life
Aeration Pads (Cement-Grade)
Aeration strips on the bottom of the Feldbinder EUT tank — compressed air is blown through these to fluidise the cement during discharge.
| Parameter | PP/PE Granulate | Portland Cement |
|---|---|---|
| Pad material | Polyester | Polyamide (alkali-resistant) |
| Service life | 3–6 years | 1–2 years |
| Wear symptom | Slow discharge | Residue in tank, cemented pores |
Important: for cement tankers, use polyamide pads only — not polyester. Polyamide is resistant to alkaline environments; polyester degrades rapidly at pH above 11.
In stock: polyamide pads for Feldbinder EUT (standard sizes). Fitting time: one to two working hours.
Bottom Fittings – Shut-Off Valves and Discharge Outlets
The bottom valve (Bodenventil) DN100–DN150 is one of the most frequently replaced components in a cement tanker. A seized valve after several seasons of cement haulage is a classic failure — particularly on trailers stored with residual undischarged cement.
Typical problems with cement tankers:
- DN125 valve fails to open or does not seat properly
- Blockage caused by dry cement residue between the mushroom valve and its seat
- Galvanic corrosion at aluminium-to-steel interfaces on Camlock couplings
- Cracked aluminium valve body caused by forcible attempts to free a seized valve
Available: DN100 and DN125 shut-off valves, EPDM and PTFE seals for bottom fittings, Camlock couplings type C/D/E.
Hatch Seals
Feldbinder EUT and KIP top hatches: round DN500 or oval 600×450 mm.
For cement tankers — EPDM at 50–60 Shore A hardness. A harder seal degrades more slowly under the alkaline pH of cement.
Signs of replacement: cement dust on the outside of the tank during loading or unloading, hatch failing to seat properly despite tightening, visible cracking, or hardened rubber when pressed.
Inspection frequency: every six months with exclusive cement haulage.
Safety Valves (Pressure Relief Valves)
Feldbinder EUT cement tankers operate at 2.0–2.2 bar during discharge. Safety valves must be calibrated to the working pressure range and are subject to mandatory inspection.
Note: cement can block the internal seat of a safety valve with fine particles. A cemented valve will not actuate under overpressure. Check at every service.
In stock: pressure relief valves rated at 2.0 bar and 2.2 bar.
Components Specific to the Feldbinder KIP (Tipping Cement Tankers)
Feldbinder KIP trailers used for bulk cement haulage have additional items requiring attention:
- Hydraulic cylinder seals — hydraulic oil and cement are a poor combination. Any oil leak from the cylinder warrants immediate seal replacement before the next load
- Tank hinge pin — check clearances and lubricate every three months under intensive use
- Emergency rear gate seal (ZAT) — on KIP cement tankers, a mandatory seal inspection is required before each season
Parts Replacement Schedule – Feldbinder Cement Tankers
| Component | Interval with Cement |
|---|---|
| Aeration pads (polyamide) | Every 12–24 months, or when discharge times increase |
| Hatch seals (EPDM) | Every 12–18 months |
| Bottom fitting inspection | Every 6 months |
| Safety valves | Statutory recalibration every 5 years; inspection annually |
| Hydraulic oil (KIP) | Change every 2 years or 500 tipping cycles |
| Hinge pins (KIP) | Replace when clearance exceeds 1 mm |
Order Parts or Book Fitting
Please provide the trailer model (EUT / KIP), year of manufacture, and VIN — we will select the correct dimensions.
Phone: +48 602 716 551 (Mon–Fri 06:00–20:00, Sat 07:00–15:00)
Email: biuro@magnumchorula.pl
Courier delivery to PL/DE/CZ or on-site fitting at the PHS Magnum service workshop in Chorula (4 km from the A4 motorway, 180 km from the German border).
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