Connections, Alterations and Repairs

Many Steve Vick International (SVI) products and services offer solutions to the problems associated with multi-occupancy buildings, high rise buildings and premises with uninterruptible supplies such as shops, restaurants and hotels.


For customers wishing to make new gas connections the Contract Service offers a variety of solutions.
Live Riser Transfer

The final stage of Live Riser Transfer - A collar being filled with fire retardant material

This technique allows a gas riser within a building to be partly renewed or transferred to a new main without switching off the gas supply.

It is available for use on ¾” to 6” diameter low pressure services and offers a solution to the problem of replacing services to high rise apartment blocks and enables sections of old service running under buildings to be abandoned.

The method allows significant time and cost savings as there is no need to disrupt customers’ supplies, avoiding the need to test, purge and relight each individual dwelling in a block of flats.




Live Service Transfer

This technique allows a gas service to be partly renewed or transferred to a new main without first decommissioning it. The method is ideal for multi occupancy properties or premises with uninterruptible supplies such as shops, restaurants and hotels.

The service is partly re-laid and/or transferred to a new main without disrupting consumers’ gas supplies. This results in significant time and cost savings.


Live Service Insertion

Live Service Insertion is the preferred replacement method used for renewing gas services with PE replacement.

Using the FOAMPACK™ system, Contract Service offers the technique for services up to 2” in diameter operating at low pressure.

Live Service Insertion allows gas services to be renewed without interrupting the mains supply and without having to excavate in the road or footpaths; all that is needed is one small trench just outside the building to gain access to the service.

Advantages of using this technique include:

  • Substantial cost savings as a repair or cut-off method
  • Minimal reinstatement costs
  • Significant safety benefits resulting from operatives not working on the highway



The SVI Contract Service can provide a number of techniques and services to solve the problems of altering pipe work, e.g. when renovating buildings.

Metre exchange

Metre exchange

Metre Exchange describes a safe and effective technique used by our Contract Service to safely and effectively exchange gas valves under regulated ‘live’ gas conditions.


Capex™ is a technique used to remove caps and plugs under live gas conditions. It is a safe and expert method of interchanging Caps, Plugs and Emergency Control Valves without the need for cutting consumers off gas.

Live Service Isolation

The Live Service Isolation technique provides a safe method of severing a live gas steel service under regulated ‘live’ gas conditions. It is suitable for use on steel services between ¾” to 2” diameter operating at pressures up to 75mbar.


SVI offer a service for customers wishing to repair leaking threaded joints on gas risers and other service pipes.


When repairing capillary leaks in threaded joints of steel service pipes in high-rise buildings, Polyfil™ is effectively used as an alternative to removing the need to dismantle pipe work.
Polyfil™ offers a quick drying and high-level adhesion to Teflon tape. It becomes thinner under pressure and consequently provides good penetration into the thread of the screwed joint.

Injector Seal

Injector Seal System

The SVI Contract Service use an Injector Seal system to insert sealant into a leaking threaded joint. This system can be used on ¾” to 6” diameter pipework. The method is extremely effective and prevents the need for live risers to be replaced, removing the need for consumers to be cut-off gas.