Constructed of nickel-plated aluminum, the Udor 23.208.84 Trigger Valve is integral to the safe operation of a diaphragm pump and is an ideal component for customizing your own spray gun mechanism. This trigger valve provides a tight connection that prevents air leakage, and it is convenient and easy to install. It is designed with a 1/2-inch female inlet. The durable trigger is made of stainless steel. UDOR nickel plated aluminum trigger valve with 1/2" female inlet & outlet ports & stainless steel trigger provides an excellent means for fabricating a custom spray gun assembly.