The GL18 PT3/8 5 Poly A/D Rel W/O from Watts Fluidair is a versatile relay designed for fluid control applications. This relay features a PT3/8 connection and is constructed from durable materials, ensuring long-lasting performance. Its design allows for easy integration into existing systems, providing reliable operation in various environments. The relay is engineered to handle specific pressure ratings, making it suitable for pneumatic systems. Compliant with industry standards, this relay guarantees safety and efficiency in operation. Ideal for use with other Watts Fluidair products, it enhances the overall functionality of your control systems.