High-quality materialOur solar water heater pressure relief valve is made of high-quality brass, the interior is cast with high-precision parts, and the drain mechanism is stable and reliable. AutomationWhen the system is powered by water or the system pressure is too high and complete draining is required, this automatic pressure limiting valve can work reliably. As long as there is a pressure difference between the inside and the outside of the system, the purge valve will continue to purge. Easy to disassembleIn order to ensure that water does not flow out during the output process, our automatic drain valve uses a special structure that uses the design of steam and water separation pan. Easy to disassemble and repair, so the system does not need to be emptied ApplicationThe solar quick purge valve is used to vent excess air during exhaust system operation and the HLK system and is characterized by high temperature resistance, rust protection and reliable sealing. Features: The pressure relief valve heating valve is high temperature resistant, stainless, durable corrosion-proof and reliable in sealing. The heater drain valve is convenient to disassemble and maintain while water does not flow into the system, so the system does not have to be empty . Automatic Radiator Bleed Valve - Can be reliably used if the installation is filled with water or the installation pressure is too high and sufficient drainage is required. Specifications : Material: brass. Color: yellow Nominal pressure: PN1.6. Nominal diameter: DN15 Contents: 2 pressure limiting valves. Tip: Due to lighting effect, monitor's brightness, manual measurement etc, there may be have slight differences in color and size between the photo and the actual item. Thank you for your understanding. Thank you very much.