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Pipe Fittings FAQ’s


Is there a distinction between DWI authorised and WRAS authorised (Water Regulations Advisory Scheme approved) items, and when is it required?

The main requirements required for pipework to be fitted and also in accordance in the united kingdom is the Drinking Water Inspectorate (DWI approved) that’s legal requirement of every distribution and also water treatment pipework, which includes ABS and also PVC pipe along with fittings and also for systems which are given the task of carrying potable water over the stop cock the device must be entirely WRAS (Water Regulations Advisory Scheme) accredited, once again it is required for all ABS and PVC pipe and fixtures.

What’s the shelf-life of Industrial Water Equipments solvent cements, and also what products could it be used in combination with?

Solvent cement is only able to be applied on certain kinds of plastic pipe systems, included in this are both ABS pipe and fittings and also PVC pipe and fittings, however not Industrial Water Equipments clamp saddles or compression fittings. Another type of solvent cement is required for ABS pipe and fittings and PVC pipe and fittings, each of which can be purchased from Industrial Water Equipment. Tins are labeled with a bare minimum shelf-life of two years. Assessments have demonstrated zero degeneration on unopened tins following several years storage, however it hasn’t been possible to ascertain a maximum limit. The actual cements don’t encounter any kind of unseen variations, therefore if the viscosity is OK, the cement will be functional.

What insulating material am i able to make use of on ABS pipework and fittings?

Proper care has to be considered whenever specifying insulating material intended for plastic pipework systems, this is especially significant whenever insulating ABS pipework and fittings. Industrial Water Equipment advises that mineral wool varieties including ‘Rockwool’, Class 1 HT Armaflex or even Phenolic foam types such as ‘Koolphen’ are appropriate, and many types of others really should be avoided except if Industrial Water Equipments technical department has granted prior acceptance.

Am I Able To joint ABS pipework and fittings to PVC-U pipework?

It’s not encouraged to joint 2 unique plastic-type pipework models by way of solvent cementing, however it can be achieved, so long as the ABS pipework and fittings and the PVC pipework and fittings are well suited for the application. Joints have to be created totally in agreement with recommendations. PVC-U solvent cement should be used.

Exactly what pipework method would you suggest with regard to low heat range applications?

ABS pipework stays ductile at temperature ranges as little as -40ºC and it is perfectly suitable for low temperature purposes.

Is it plausible to tap into a live ABS pipework or PVC-U pipework?

Sadly, squeeze off technology formulated for PE mains can’t be applied to ABS pipework or PVC-U pipework. Pipe freezing may happen. You will find in spite of this, specialists who concentrate on this particular work.

Is there a lowest/highest ambient heat range in which I’m able to effectively create solvent weld joint on either ABS or PVC pipework?

Temperatures are not crucial so long as surfaces of the plastic pipework as well as fittings are maintained dry and clean. Even so, for under zero temperature ranges, you need to permit supplemental curing time, because the evaporation rate from the solvent is going to be slowed up.

Can we test out the installation of ABS and PVC pipework and fittings?

Following installing and then permitting the correct drying times, the recommended approach to testing would be to load the pipework (comprising either ABS and PVC pipework and fittings) with water making certain no air pockets reside, and execute a hydrostatic pressure test approximately 1.5 times maximum working pressure or rated pressure of the ABS or PVC system. The actual plastic pipework will be left pressurised for any time period not exceeding beyond one hour.

Could the solvent cement jointing procedure result in toxins inside the pipework? Which could subsequently pass in to the substance the pipework contains?

We’re able to concur that solvent cement jointing (whether with ABS or PVC systems) doesn’t generate toxins within the pipework or conveyed fluid. The actual solvent part of the cement is built to ‘melt’ the pipework surfaces and permit straightforward set up of components, after which it evaporates away totally to leave a completely cold welded joint. IWE’s solvent cements as well as associated products have already been tested and approved for usage with cold potable water systems by WRAS (Water Regulations Advisory Scheme) and may be viewed as fully WRAS approved.