{"id":6095,"date":"2026-08-21T13:44:30","date_gmt":"2026-08-21T12:44:30","guid":{"rendered":"https://vikingjohnson.com/ja-jp/technical-design/locating-plugs-2/"},"modified":"2026-09-02T11:40:50","modified_gmt":"2026-09-02T10:40:50","slug":"locating-plugs","status":"publish","type":"technical_design","link":"https://www.vikingjohnson.com/ja-jp/technical-design/locating-plugs/","title":{"rendered":"Locating Plugs"},"content":{"rendered":"\n

Couplings installed above ground may tend to creep along the pipe with repeated pipe movement, temperature variation or vibration.  This can be restrained by using couplings fitted with removable locating plugs, which prevent the coupling from moving beyond fixed limits; see “Typical Locating Plug Details”.

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Removable locating plugs are only available on Viking Johnson Dedicated & QuickFit couplings

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Typical Locating Plug Details:

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  1. For pipes up to 914mm, locating plug ¼” BSP thread with plug diameter d of 9.5mm
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  2. For pipes over 914mm, locating plug ½” BSP thread with plug diameter d of 12.7mm
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Removable locating plugs enable single pipe removal.  Once the locating plug is removed, the end rings can be slackened off, and the gaskets and centre sleeve can be slid along the pipe to expose the joint. The pipe can then be removed.

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Normally it is unnecessary to use locating plugs in couplings below ground since soil friction will ensure that the couplings remain in their correct position relative to the pipes. However, locating plugs can provide a useful method of coupling centralisation over the pipe ends.

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NOTE: Removable locating plugs are available Zinc plated or stainless steel

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Couplings installed above ground may tend to creep along the pipe with repeated pipe movement, temperature variation or vibration.  This…

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