The new Ridgid SF-2500 SuperFreeze pipe freezing unit quickly and easily isolates sections of copper or steel pipe with ice plugs, eliminating complete system shut-downs and draining. The SF-2500 forms ice plugs in as little as five minutes in steel pipes up to 2 inches and copper tubing up to 2 ½ inches. One or two plugs can be formed with a single unit at the same time. The RIDGID SF-2500 unit operates automatically once the freeze heads are attached to the pipes and the unit is turned on. The unit continues to run during repairs, insuring the ice plugs do not melt. Flexible rubber hoses connecting the freeze heads to the unit make them easier to handle and allow for quicker coiling and storage in its rugged stainless steel carrying case. The SF-2500 unit does not use any hazardous refrigerants, CO² or nitrogen. Since it does not require accessories or bottles of CO², the SF-2500 unit is lightweight and side handles make it easy to transport. Efficient and reliable, the SF-2500 unit uses a specially designed compressor with quick restart capabilities and overload protection.