Feature: 1. Solenoid valve come with stable performance, sturdiness and durability, safety and reliability 2. Electric solenoid valve possess high sensitivity, quality assurance, and beautiful appearance 3. The product using direct‑acting diaphragm structure, no pressure start, expanding its application field 4. Drinking water solenoid valve adopt threaded interface design, possess simple and convenient installation 5. Made with imported stainless steel springs and good‑quality materials, the normal operation is not less than 200,000 Specification: Item Type: Solenoid Valve Material: Nylon, stainless steel, PE Model: 209BK Interface: 1/4in Working Mode: Positive pulse opening valve, negative pulse closing valve Operating Voltage: DC4.5V Pulse Width: 20ms Medium Temperature: 0-100℃ Inner Diameter: Approx. 10mm / 0.4in Coil Resistance: 12Ω. Package List: 1 x Solenoid Valve Note: The solenoid valve is mainly divided into normally open, normally closed, inlet valve and drain valve. The explanation is as follows, buyers must choose according to their own requirements, so as to avoid unnecessary losses caused by unsuitable purchases.1. Normally open‑refers to closing the valve when energized2. Normally closed‑refers to opening the valve when power is applied3. Water inlet valve‑‑refers to the water pressure environment of 0.02‑0.8MPa, where there is water pressure4. Drain valve‑refers to the water column used at the working pressure of ≤400mm