Manufacturer of the"X-Riser", adapters, service head adapters, couplings, punch tee"s and line stoppers for the natural gas and propane industries. Chicago Fittings products consist of a bottoming nut (positive stop) feature that eliminates the need for torque measurements. The machined hex style nut and body make for easy assembly and can be provided with a wide variety of finishes to meet all your company standards.