The SEALFAST 4" x 1/2" LM Liquid Filled Gauge is designed for accurate pressure measurement in various applications. With a pressure range of 0-400 psi, this gauge is ideal for monitoring systems under varying conditions. The liquid-filled design minimizes vibration and enhances readability, making it suitable for both industrial and commercial use. Constructed with durable materials, it ensures longevity and reliability in demanding environments. The 1/2" connection allows for easy installation in standard piping systems, while its compliance with industry standards guarantees performance and safety.