MP & iP Stopple Operation

Flowstopping for planned and emergency operations from low pressure to intermediate pressure, all diameters and pipeline materials which include steel, cast and ductile iron and PE systems.

We use various flowstop techniques to achieve the best result for the customer’s needs.

Under Pressure Drilling

For routine or emergency operations we have the equipment and expertise to provide a fast and efficient drilling services for the diameter or material of your pipeline, with off-takes from 2” to 24” for metallic mains and up to 400 mm off-takes for PE connections.

ALH System 3 Bagstop on Metallic Mains

Using the ALH System 3 this provides a safe and effective method for flowstopping 3” to 48” diameter gas mains.
Bagtubes are a safe, easy-to-use and cost-effective flowstopping system for maintenance, repair and modification of distribution networks whilst preserving continuity of supply. The procedure is totally gas-controlled, carried out through an arrangement of valves.

PE Bagstop

Using the ALH System 3 to bag off 355 – 630mm on PE mains. Bagtubes are a safe, easy-to-use and cost-effective flowstopping system for maintenance, repair and modification of distribution networks whilst preserving continuity of supply.

The procedure is totally gas-controlled, carried out through an arrangement of valves.

Cold Cutting and Window Services

We have a range of specialist pipe cutting equipment which enables us to carry out circumferential or longitudinal cutting operations, safely, for all metallic and PE pipelines from 2” up to 72”.

We also have the specialist equipment to enable us to do window cuts, for all your maintenance, repair and emergency works.

PE Branch Saddles

A branch saddle can be connected during the construction of your pipeline, or can be installed on the main before it is laid.

Our teams of competent and fully equipped technicians carry out all works, installation of the saddle and valve , together with welding, pressure testing and commissioning of the new connection.

The procedure is totally gas-controlled, carried out through an arrangement of valves.

CCTV

Our camera systems can survey live or dead pipeline, from 4” to 48” through various methods.

Camera surveys are proven to reduce operational costs, faster diagnosis of in-pipe obstructions, water ingress, poor pressure conditions, unknown connections and gas leaks.

ALH Bond and Bolt

This is a cost effective method to gain access into live large diameter gas mains. Utilising an innovative technique for bag stop and camera insertion into low pressure metallic mains, coupled with the ALH System 3 equipment.

ALH Bonded Saddles

The new ALH bonded saddle can be used to make new connections to existing mains where time and costs are paramount  as this system allows you to uncover only the crown of the main for the connection to be made.

Bonded saddles can also be used with pressure points for valve remediation work.

Pressure Testing

When a new pipeline or a new connection needs pressure testing, we have the capabilities to carry out hydrostatic and pneumatic pressure testing depending on your requirements.

Welding, Fabrication and Inspection Services

We offer a full range of welding activities, MPI, phased array, and Q10 sampling onsite to offsite services.

From welding split tees and flanges to P1/P2/P9 welding specification to fabricating pipework in our workshop. All inspected and certified by senior pipeline inspectors. 

Shot Blasting, Coating and Wrapping

Shotblasting, coating and wrapping services to our customers requirements. We can undertake the whole project from providing CP/hot works and inspectors for coating and wrapping.

Cathodic Protection

The technique of providing cathodic is to prevent metal pipelines from corrosion. We can offer consultation, design and construction of your CP system.

Advice & Consultation

On-site, off-site and out-of-hours technical support. For expert advice please contact us at RWT Flowstopping Ltd.