The 1/4" REG PRESET 40 PSI INLET 5 from Watts Fluidair is a high-performance pressure regulator designed for applications requiring a preset output of 40 PSI. This compact regulator features 1/4" NPT connections for easy installation and compatibility with various systems. Its durable construction ensures reliable performance in demanding environments. Ideal for pneumatic tools and equipment, this regulator helps maintain consistent pressure, enhancing operational efficiency. The preset feature simplifies usage, making it user-friendly and efficient.