Rotary Joint, DPR 280 L 51, 1112459-051, Christian Maier GmbH & Co. KG
Universal equipmentPrice on request
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Description
Rotary joint for cooling water and hot water. Large Series DP 65-100. Two‑way flow, designed for rotating inner pipe (directly borne in housing). Nominal size DN 80. Rotor connection: left‑hand male thread G 3½ (ISO 228). Housing connection: radial G 2 female thread (B1) and NPT 2 (B2). Seal combination 1 (synthetic carbon 19K – chrome steel 18E). Medium: cooling water, hot water. Temperature range –10…140 °C, pressure range 0.2…10 bar, maximum speed 55000/DN ≈688 min⁻¹. Housing made of lacquered steel. Rotor made of stainless steel. Two ball bearings, factory‑lubricated, maintenance‑free up to 80 °C, for higher temperatures relubrication through easily accessible grease point required. Internal balanced mechanical seal, springs outside medium flow. Inner pipe supported in housing, no elbow required. Connection to rotating pressure system via standardized connection piece with sealing and centring face. Radial and axial housing connections with right‑hand female thread G/BSP (ISO 228) or NPT (ANSI). Anti‑rotation device. ATEX certification optional. Set of drain plugs fits Large Series.
Possible Applications
This rotary joint is specifically engineered for high-performance heat transfer applications in heavy-duty industrial machinery, such as large-scale paper drying cylinders, calender rolls, and textile finishing equipment. Its robust design, featuring a directly borne rotating inner pipe, makes it ideal for processes requiring consistent cooling or heating water circulation within high-speed rotating drums where thermal expansion and mechanical stress are significant factors. The unit is particularly suited for integration into plastic film extruders and rubber processing lines where precise temperature control of the roll surface is critical for maintaining material quality. By utilizing a balanced mechanical seal and a stainless steel rotor, this component ensures reliable operation in demanding environments where fluid integrity and long-term durability are essential for continuous production cycles.
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Specifications
| Category | Universal equipment |
| Product ID | 8211111697-2234 |
| Manufacturer | Maier |
