The nut is over 10mm thick and the thread pitch is 2mm. Calculations and testing to over 1.5 x the working torque have proved the thread engagement as being more than satisfactory.
The casting in the new Remote EasiClamp is actually the same thickness as that used in the old design, but this was not evident as the old casting had a lip around the edge which masked the thickness of the housing.
The pressure equipment directive, applies to the design, manufacture and conformity assessment of pressure equipment and assemblies of pressure equipment with a maximum allowable pressure greater than 0.5 bar.
The Remote EasiClamp & EasiTap products are not defined as pressure equipment or pressure accessories but are defined as component parts for pressure equipment for which the PED specifies no specific assessment procedure. Their suitability where applicable will be checked on the occasion of conformity assessment of the complete pressure equipment or assembly.
E.g. A compressor set may be defined as pressure equipment made up of component parts including tubes, flanges, couplings, and valves etc. The tubes, flanges and couplings will not require individual assessment to the PED or require CE marking but when assembled to form the “whole”, the compressor set will require assessment at that final stage. This will be the responsibility of the manufacturer or assembler of the compressor set. Valves, however, are considered by the PED to be pressure accessories and require separate individual assessment and consideration for CE marking. This will be the responsibility of the valve manufacturer.
Hence, Remote EasiClamp & EasiTap products for all applications exempt from PED assessment:
Incorporated in these new products is Viking Johnson’s unique 100% circumferential ‘Waffle” gasket, which not only provides a leak tight seal but also caters for circumferential or longitudinal cracks guaranteeing a reliable, permanent seal even on badly corroded pipes.
The Remote EasiClamp and EasiTap products are constructed from ductile iron housings, giving them the benefit of high strength. The products will support and seal around the pipe for the full length of the body, thereby ensuring that the effectiveness of the gasket seal is maintained in all circumstances over the design life of the fitting. The inherent strength of the products will cater for circumferential pipe shear and also realign pipes ensuring that the finished repair is stronger than the existing pipe.
Hence, the repair can be considered as a permanent one.
The remote EasiClamp and EasiTap products require a substantially reduced trench size for their installation, thereby:-
- Minimising traffic disruption and diversions so reducing fuel use.
- Minimising spoil sent to landfill.
- A reduction of construction vehicle movements.
- Reduced energy usage due to smaller equipment requirements
In addition, the fittings are:-
- Manufactured using the latest technology minimising raw material usage.
- Coated in Rilsan Nylon, a thermoplastic polyamide produced from a renewable raw material of plant origin (Castor Oil) providing a responsible coating solution that also helps to protect our environment.
- Supplied in biodegradable shrink wrapping packaging that ensures the fitting arrives on site in a free from any contamination.
Recognising the drive in the construction industry to identify and remove risk of injury to operatives, Viking Johnson has incorporated the following features in the new Remote EasiClamp and EasiTap products:-
- Remote Installation, allowing the operator to work well away from the potential hazard of a damaged pipe under pressure.
- Patented self retaining bolts, nuts, washers and clip that automatically drop into position once the product is fully wrapped round the pipe, meaning that the operator can use both hands to handle and position the fitting over the leak.
- Use of two bolts on the fitting providing added structural security ensuring that once positioned on the pipe there is a double locking mechanism holding the fitting in place reducing the risk of personal injury.
The Remote EasiClamp and EasiTap products incorporate many of the proven design features of the current EasiRange fittings, some of which have been improved to accommodate the new capabilities of the product. For over twenty years the wide tolerance EasiClamp fittings with their 100% circumferential Waffle gasket have been used to repair damaged pipes and this proven design has been included in the new fittings.
The standard EasiClamp products range compliments the three sizes available at present (3”, 4” & 6”) and whilst these can not be installed remotely the product do offer the same features and benefits to the end user from a functional perspective.
In the event the pipe to be repaired does not fall in the OD range covered by the EasiRange then a bespoke HandiClamp (stainless steel) product can be manufactured to repair the pipe.
At present the Remote EasiClamp product can be supplied in 3”, 4” & 6” sizes, which account for circa 80% of all repairs to pipelines.
PE pipes are not “rigid” and variations in pressure will cause changes to the outside diameter. So, if after installing the Remote EasiClamp there is a reduction in pressure then the outside diameter may reduce resulting in gasket relaxation and over time a leak. In addition, even if the pressure remains constant another characteristic of PE pipe is that when subjected to an external load (from the gasket in the Remote EasiClamp used to form a seal) they want to deform away, again resulting in a loss of gasket pressure and in time a leak. Both of these issues may in the long term cause a leak from the Remote EasiClamp, but then if the PE is damaged and there is no possibility to cut out and replace the damaged section then using a repair clamp will provide a temporary repair. However, we do know that over the years many repairs have been undertaken on PE pipes with both HandiClamp and EasiClamp (where their size range accommodates the PE OD) products with very few if any being changed at a later date for a more permanent repair method that from a practical perspective they are deemed are permanent.
PE pipes are not “rigid” and variations in pressure will cause changes to the outside diameter. So, if after installing the under pressure tee there is a reduction in pressure then the outside diameter may reduce resulting in gasket relaxation and over time a leak. In addition, even if the pressure remains constant another characteristic of PE pipe is that when subjected to an external load (from the gasket in the Remote EasiTap used to form a seal) they want to deform away, again resulting in a loss of gasket pressure and in time a leak. Hence, installing a one of our Remote EasiTap fittings on a perfectly good pipe potentially introduces a long term liability (a leak path) albeit at a later date and therefore for these reasons Viking Johnson do not recommend the use of mechanical under pressure tee products on PE pipe.
The Remote EasiClamp product can be used on Steel, Cast Iron, Ductile Iron PVC and AC (depending on actual outside diameter) materials.