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So far ATCM has created 23 blog entries.

ATCM and WRAS working together

By |2019-06-03T15:00:41+00:00May 1st, 2019|

The ATCM and the Water Regulations Advisory Scheme (WRAS) have jointly produced a WRAS Information and Guidance Note (IGN) entitled "Cold Water Storage Cisterns - Design Recommendations for Mains Supply Inlets". This is a practical guide to assist designers, isntallers and usersof water supply systems to ensure appropriate backflow protection (Air [...]

Type AB Air Gaps

By |2019-05-31T07:58:11+00:00April 26th, 2019|

Type AB Air Gaps - Practical Examples This article is aimed at clarifying regulation requirements of Type ‘AB’ Air Gaps and the new thinking by the Water Companies in their practical application. The Regulations are quite specific, a type ‘AB’ Air Gap is, by definition is unrestricted. i.e. No Screening of [...]

Tank Level Switches

By |2019-06-03T15:01:08+00:00April 26th, 2019|

Tank Level Switches and all that Jazz! As greater monitoring and sophistication becomes a normal requirement of ‘building management systems’ so also does this lead to tanks and cisterns being fitted out with a wide variety equipment items. The problem generally is not only how to install them, but where. As [...]

Sparge Pipes

By |2019-05-30T13:58:06+00:00April 26th, 2019|

Sparge Pipes - Their Ins and Outs A Sparge Pipe - a device used to achieve optimum circulation of water stored within a tank or cistern. Its application is generally reserved for installations where space around a tank is restricted. Reasonable access to the tank side directly opposite the Mains Inlet [...]

Vortex Inhibitors

By |2019-05-31T07:53:26+00:00April 26th, 2019|

Vortex Inhibitors - What are they and who needs them? As the name suggests this specialised pipefitting prevents initiation of vortices within a tank when the contained liquid is being extracted and assists in maximizing, effective tank capacity. How does it work? Like most effective things in [...]


By |2019-05-30T14:05:24+00:00April 23rd, 2019|

Fundamentals and practical guidance Failure to control corrosion can lead to: increased costs reduced safety negative environmental impact 25% of all corrosion problems could be prevented by easily using well-established techniques. Corrosion results from the chemical interaction of a metal with its environment. Physical and chemical conditions influence both the rate [...]

Cistern and Tank Ventilation

By |2019-05-31T13:26:43+00:00April 23rd, 2019|

For safety's sake, give your Tank some air Cistern and Tank Ventilation - The need to allow all cisterns and non-pressurised tanks to breath is paramount. Specialised fittings are required to ensure atmospheric pressure acts on the fluid surface at all times. Failure to meet this requirement endangers vessel [...]

Float Operated Inlet Control Valves

By |2019-05-31T13:21:39+00:00April 23rd, 2019|

Their Ins and Outs How often are you confronted with problems associated with Float Operated Level Control Valves? Many tank operational difficulties arise as a result of the inappropriate selection, sizing and installation of the most appropriate float valve for the respective duty. Most float valves are purchased and installed by [...]

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