Introduction
Discharge and compressor hoses are essential equipment — without them, a Feldbinder silo trailer cannot unload. These hoses are carried in dedicated compartments built into the trailer frame, where they are protected from dirt, damage, and theft. Each compartment is closed by a cover with a locking mechanism, and that mechanism depends entirely on a functioning key or lock.
It is easy to overlook a compartment lock — until it seizes or the key goes missing. On EUT trailers handling food-grade bulk materials, hose cleanliness has a direct bearing on product quality, which makes a sealed, properly closed compartment a hygiene requirement rather than a convenience. KIP trailers rely on the same principle. Feldbinder uses its own proprietary closure type alongside universal designs, so identifying the specific closure in your compartment is the essential first step when sourcing a replacement key or lock.
PHS Magnum in Chorula near Opole holds stock of hose compartment keys and locks in all common closure types, including the Feldbinder type.
Types and Specifications
Keys and locks for hose compartments in all common closure types:
| Closure type | Description |
|---|---|
| Butterfly | Classic butterfly-style closure |
| External 8 mm square | Operated with an external 8 mm square key |
| Internal 8 mm square | Operated with an internal 8 mm square key |
| Spike-type | Spike/pin-style closure |
| Feldbinder type | Proprietary Feldbinder closure |
Sizes and Variants
- Butterfly — universal, widely used.
- External 8 mm square / internal 8 mm square — different key engagement styles.
- Spike-type — pin-style closure.
- Feldbinder type — proprietary closure specific to this brand.
Selection is made by the closure type fitted to the individual compartment.
Compatibility with Feldbinder Silo Trailers (EUT/KIP)
- EUT — hose compartments on the horizontal trailer frame; hose cleanliness is critical for food-grade operations.
- KIP — hose compartments on the tilting silo frame; the same protective function applies.
Keys and locks are selected by closure type (butterfly, 8 mm square, spike-type, Feldbinder type), independently of the trailer type.
Role in Hose Hygiene
A compartment lock may appear to be a minor detail, but its function extends well beyond theft prevention. The hose compartment protects the trailer’s most contamination-prone equipment from water, road dust, and grime during transit and while parked. A functioning lock determines whether the compartment actually stays closed.
On Feldbinder silo trailers, this matters in two distinct ways:
- Food-grade cargo hygiene — on an EUT trailer handling food-grade bulk materials, a hose pulled from a dirty, open compartment can transfer contamination to the product. A closed, sealed compartment is part of the hygiene chain.
- Hose longevity — discharge and compressor hoses are a significant consumable cost; protecting them in a properly sealed compartment extends their service life.
Feldbinder uses its own proprietary closure type alongside universal designs (butterfly, 8 mm square internal/external, spike-type). When sourcing a replacement, identifying the specific closure type is essential — we can assist with identification where there is any uncertainty.
Common Issues
- Seized lock — corrosion and accumulated grime block the mechanism; replacement lock required.
- Lost key — we match a replacement key to the closure type (e.g. 8 mm square, Feldbinder type).
- Wrong type — a key for a different closure type will not function; correct identification needed (butterfly / square / spike / Feldbinder).
- Damaged closure — a faulty lock does not secure the compartment; full lock replacement required.
Availability and Delivery
We hold stock of hose compartment keys and locks at our facility in Chorula near Opole (4 km from the A4 motorway, approximately 180 km from the German border). Common types, including the Feldbinder type, are usually available from stock.
Courier delivery throughout Poland and the EU; combined orders with compartment covers and blanking caps are possible. For part identification and pricing, ask for a quote.
Related Categories
- Hose Compartment Covers — DN160/DN200 caps and plugs for hose storage tubes.
- Storz Spanners & Mallets — Storz coupling spanners and rubber mallets for silo knocking.
- Feldbinder EUT Parts — full range of parts for the horizontal EUT silo trailer.
- Feldbinder KIP Parts — hydraulics and seals for the tilting KIP silo.
- See also: spare parts hub, silo trailer service — PHS Magnum.
See also: This category in the full PHS Magnum parts catalogue (all brands) →
Author: Aleksy Pasternak — Managing Partner PHS Magnum, 20 years in the industry, internal ISO 9001:2015 auditor (DEKRA).
