Abstract: A saddle tee for irrigation pipe utilizing a unique structure for clamping the saddle tee in sealed relation to the main pipe. The saddle tee is of one-piece construction and is specifically adapted for use with underground irrigation pipe and can be used with pipes of different size within certain limits. The saddle tee is constructed of plastic material in order to eliminate corrosion and includes a clamp structure which is provided with interengaging serrated components that can be tightened into place without the use of tools such as normally required to operate two-piece clamps that are secured in clamped relation by bolts or screws and nuts.