
If you have polybutylene pipes, this is a life saver. My sister had two leaks at the joints of her polybutylene pipes. These couplings allowed us to carry out repairs in PEX. We'll eventually rebuild everything in PEX, but this product did a great job as a temporary fix. If you have polybutylene, you should have some 1/2 and 3/4 sizes on hand. They are often difficult to find locally.

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