The Alphacool ES Reservoir DDCzero 1U with Pump combines a compact reservoir with the powerful Alphacool DDCzero PWM pump. Its low-profile design has been specifically developed for installation in 1U server systems and other water-cooling applications with severely limited installation space. This makes the pump-reservoir combination particularly suitable for server, datacenter and industrial cooling solutions. Despite its compact dimensions, the reservoir provides sufficient filling volume for reliable operation in demanding cooling loops. Five G1/4" ports offer multiple options for integrating the unit into the cooling system. The base and top of the Alphacool ES Reservoir DDCzero 1U are made entirely of durable acetal. The G1/4" connection threads are also integrated directly into the robust material, ensuring stable and reliable fitting connections. The solid construction is designed to meet the requirements of professional server and industrial environments. With a height of less than 42 mm, the pump-reservoir combination can be integrated into compact 1U systems. The reservoir has been tested at pressures of up to 4 bar and is designed for an operating pressure of up to 2 bar. This makes it suitable for demanding cooling systems in which a robust and reliable construction is essential. The integrated Alphacool DDCzero PWM pump is a compact and powerful circulation pump for PC water-cooling systems, datacenter systems and industrial applications. A robust ceramic shaft, combined with the durable plastic housing, ensures reliable and long-lasting operation. The pump offers high delivery performance and ensures a reliable coolant flow. Compatibility The Alphacool DDCzero pump tops and reservoirs are exclusively compatible with the Alphacool Core DDCzero PWM pump. Standard DDC pumps cannot be used due to their larger dimensions.