Numbers & Alphabets Puzzle Mat
Numbers & Alphabets Puzzle Mat has a total of 10 pieces numbers 0-9 and 26 pieces alphabets A-Z.
Made from bright, assorted colors that can be easily arranged to you or your child's preference. Made out of high density Eva foam for the greatest durability and comfort. Eva foam is durable, non-toxic, premium foam that is lightweight and easy to assemble. It is also water, mold and mildew resistant which makes it easy to clean. Just wipe with damp cloth & mild soap. Build creative shapes too each letter and number can be removed from the baby puzzle mat for interactive learning, allowing children to develop gross motor skills, hand-eye coordination, logic, reasoning, and visual sensory growth. Use to design play areas in homes, schools, day cares, and more. Can also be used on walls around play area. The top of the foam puzzle mat is grooved with a non-skid bottom for ultimate safety and protection.
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Solenoid valve and electric valve difference
1. Nature of work: Electric valve drive is generally motor, more resistant to voltage shocks. Solenoid valve is open and fast off, generally used in small flow and small pressure, requiring a large switching frequency electric valve instead. The opening of the electric valve can be controlled, the state of the open, closed, semi-open semi-off, you can control the flow of media in the pipeline and the solenoid valve can not meet this requirement. Solenoid valve general circulation coefficient is very small, and the working pressure difference is very small. For example, the general 25-caliber solenoid valve flow coefficient than the 15-caliber electric valve is much smaller. Solenoid valve drive is through the electromagnetic coil, relatively easily damaged by voltage shock. Equivalent to the role of the switch is to open and close 2 roles. Solenoid valve power can be reset, electric valve to such a function need to add reset device. 2. Switch form: Electric valve drive is generally used motor, open or close action to complete the need for a certain amount of time analog, you can do to adjust. Solenoid valve driven by the coil, only on or off, short switching time action. 3. Applicable technology: Electric valve is generally used for regulation, but also the amount of switch, such as: fan coil end. Solenoid valve suitable for some special requirements, such as leakage, special fluid medium, the more expensive.