John Guest plugs are used to temporarily or permanently close off an unused push-fit connection. They are useful during alterations, servicing or expansion of pipework installations.
The outer dimensions of the plug must correspond precisely to the size of the push-fit connector. Therefore, choose, for example, a 3/8″ plug for a 3/8″ connector and a 1/2″ plug for a 1/2″ connector.
Push the plug all the way in and check the connection before pressurising. Also check the product's material, temperature limit and maximum allowable working pressure.
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