7/8" BSPT Fig 5 Style Fusible Plug
FIG 5 HSS "National" Locomotive 'Button' fusible plugs meet the Heritage Associations guidelines. All our plugs are fully tested, supplied with a certificate of conformity and available from stock.

Our fusible plugs are made to BS 1123: 2006 and are not to be relied upon as the primary safety device in any pressure system. In accordance with the pressure equipment directive, there must also be an approved device in the system.