Viking Johnson products

The simplicity and versatility of the fittings make them suitable for many applications including pumping stations, water treatment works, sewage treatment works, plant rooms, meter chambers, power generation equipment, gas distribution stations. Viking Johnson’s Dismantling Joints are particularly suitable for simplifying the installation & removal of isolation valves, control valves, check valves, non-return valves, flow metering valves, pump sets, pressure reducing valves, flanged pipe & fittings. Designed and manufactured to BS EN ISO 9001: 2008 and tested to the most exacting requirements of WRAS (Water Regulatory Advisory Scheme) for use with potable water.

FlexLock permits angular deflection between pipes, allowing for normal pipeline movement such as ground settlement. Long radius curves can also be accommodated, reducing the need for special fittings. FlexLock couplings allow for a total angular deflection of ±6° (±3° for flange adaptors). Cost effective – FlexLock can provide significant cost savings compared to non-locking couplings with a harnessing system. Restrains pressure thrusts without thrust blocks at bends. Convert cut lengths of pipe into flanged pipes - allows use of pipe offcuts. Working Pressure of 16bar on water up to and including DN200 and 10bar for DN250 & DN300. For gas applications a working pressure of 6 bar can be achieved. The ability to provide angular deflection in ANY plane is a particular advantage - a harness assembly can provide angular deflection only in ONE plane.

Couplings can absorb up to 10mm expansion and contraction, flange adaptors up to 5mm which allows for movement on bridge crossings, in chambers and pump stations. Often eliminates the need for special expansion joints. The standard finish for all Viking Johnson products is black Rilsan Nylon 11, which is highly resistant to impact, corrosion, abrasion and chemical attack. However, other coatings such as shopcoat, hot dip galvanising, zinc spray and epoxy coating can be supplied as required. Flange adaptors are often used to permit dismantling of valves in flanged pipe systems. Couplings can offer up to 6° of angular deflection, flange adaptors 3° - to allow for the connection of misaligned pipes; take up ground settlement at structures; lay pipes to large radius bends.

QuickFit products accommodate angular deflection between pipes. This makes installation easy and allows pipeline movement, such as ground settlement. Long radius curves can also be accommodated, avoiding the need for special fittings with couplings up to 6º and flange adaptors to 3º. No need for specialist tools – just a 19mm A/F deep reach socket and torque wrench. QuickFit couplings are capable of accommodating 10mm of expansion/contraction per fitting, flange adaptors 5mm.This reduces the need for supplementary expansion joints or bellows. All cast QuickFit flange adaptors are supplied as standard with an extended sealing face, and are suitable for use with wafer style (butterfly) valves. Fabricated flange adaptors can be supplied with either an extended sealing face or clear bore option.

The Marine design allows angular movement, which caters for minor misalignment and pipe deflection with couplings up to 6º & flange adaptors to 3º. Marine couplings are capable of accommodating 10mm of expansion/contraction per fitting, flange adaptors 5mm which reduces the need for supplementary expansion joints or bellows. Marine products up to DN300 are pre-assembled allowing quick and efficient installation, without the need for dismantling, even in the most difficult of conditions.

Straightforward for Civil Contractor to position the pipe. Easy to secure and prevent movement of the pipe work. Large formwork panels can be reused as there is no need to make holes in the shuttering. No need for a contractor to come back and cast in pipes or ‘make good’ the wall surface after casting pipes. Ensures good bond between wall and pipe. Installed cost can be drastically reduced particularly where a large number of through the wall joints appear on a structure e.g. in a gravity treatment works.

The Dismantling Joints are double flanged fittings that accommodate up to 100mm (4”) longitudinal adjustment and can be locked at the required length with the tie bars supplied. Not only does this system allow for fast, easy maintenance of valves, pumps or meters, it simplifies future pipe work modifications and reduces downtime when changes need to be made.

The FlexLock system provides a self-anchoring method of joining ductile iron or steel pipes and offers a cost effective, quick and simple alternative to traditional anchoring systems such as site welding, harnessing or thrust blocks.