Shut-off valve operates below the frost line. Hydrant cannot freeze because when it is closed, all water in the stand pipe drains out of a hole in the valve which is set in the ground below the frost line. Pistol type handle. Hand wheel designed to lock the flow of water at rate desired. Solid brass rod through brass packing nut will not rust and cut into rubber O-rings. Solid brass links and connector. 1 piece molded Buna 'N plunger can be easily adjusted or replaced without removing hydrant.