Rotary Joint, DPR 280 L 11, 1112459-011, 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 NPT 3½ (ANSI). Housing connection: radial NPT 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 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-speed thermal management in heavy-duty rotating machinery, such as large-scale calender rolls in the paper and textile industries or cooling drums in plastic film extrusion lines. Because the unit features a directly borne inner pipe and a balanced mechanical seal, it is ideal for processes requiring consistent temperature control of rotating cylinders where thermal expansion and high rotational speeds are present. The robust stainless steel rotor and synthetic carbon seal configuration make it particularly well-suited for circulating hot water or cooling water in demanding industrial environments where reliable fluid transfer is critical to maintaining product surface quality and preventing thermal deformation of the rollers.
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Specifications
| Category | Universal equipment |
| Product ID | 8211111697-2246 |
| Manufacturer | Maier |
