The piping system consists of a main pipe centrally located in a frost-free environment. Depending on the case at hand, one or more pipes lead to each of the designated fire sections. In each section, the front end of each supply pipe is fitted with a shut-off valve with remote indication. The piping system consists of stainless steel. The main pipe is joined with high-quality press fittings, the distributor pipes and the pipes connecting to the nozzle are joined with cutting rings.

The water consumption per nozzle varies between 2.8 and 25 liters (0.74 and 6.6 gallons) per minute, depending on the characteristics of the room. This means a significant reduction of water consumption, compared to a traditional sprinkler (80–250 liters = 21–66 gallons per minute) and also permits smaller pipe diameters. The main pipe usually has a diameter of only 33 or 42 mm, and pipes leading to the nozzles have diameters of 10 or 12 mm, allowing extremely simple installation.

Nozzle heads may be supplied with either open (deluge) nozzles for “dry piping” systems or closed nozzles with “melting fuses” or “glass bulbs” for “wet piping” systems.

Open-nozzle systems consist of a nozzle head with micro-nozzles or of separate micro-nozzles mounted directly on the supply pipe. With an open nozzle, the water will be atomized as soon as the high-pressure pump is activated either manually or by sensors signaling a fire.

Closed-nozzle systems also consist of nozzle heads equipped with micro-nozzles, but they are secured with glass or plastic bulbs that will melt as soon as the temperature exceeds a certain threshold – starting at 56 °C (133 °F), various options are available – and thus release the water. Each nozzle is equipped with a filter to prevent clogging. Each nozzle head is available in polished chrome-plated brass or polished stainless steel, the latter for use in an aggressive environment. For design or architectural purposes, nozzles may also be supplied in various colors on request. The water consumption will be determined individually in each case, based on the existing fire load, and it can be adjusted to the actual requirements anytime by exchanging the micro-nozzles in the nozzle head.

To activate the system, a trigger system for the high-pressure pump is required. The system may be activated either by a signal from a pressure controller (drop in pressure triggers nozzle, closed system) or from a fire detector or fire alarm system. In addition, the system may be activated manually. These versions may be fed by automated as well as semi-stationary Callies vehicle systems.

The development of our high-pressure water-mist systems, which are designed for fire prevention and protection, has been guided by our many years of experience and knowledge gained in active service. For this reason, our focus was initially on the development of mobile high-pressure systems, which are now employed by fire services around the world and have proven their efficiency.

With our pioneering work in this area, we have acquired an extraordinary wealth of experience in the development, design, and construction of water-hydraulic systems over many years.

Our priority lies in securing economic assets to the fullest satisfaction of or clients and customers. In our view, the only way to achieve this is through top-quality systems engineering, a goal we strive to achieve without any compromise. For this reason, when we manufacture our products, we only use pumps, valves, and stainless-steel materials destined for a long lifetime.

Our fire-extinguishing systems, which are customized according to the specifications of each of our customers, are designed by a team of experienced experts focusing on your specific needs. These systems may be adapted to general circulation areas as well as the protection of key industrial and manufacturing sites and facilities.

Callies GmbH thus offers an extraordinary range of high quality fire-safety equipment for all walks of life.

From the earliest planning stages on, we will support you with our comprehensive expertise in finding the perfect concept. You will benefit from the diverse education and training our engineers and technicians have received. In addition, all of them hold leading positions in the volunteer fire department. Whether it’s a mobile, a semi-stationary, or a stationary system in a building complex that you are looking for: our multi-talented team covers every field, from expertise in electrical engineering to the technical planning of fire safety in buildings. We will gladly furnish you with a cost estimate, based on construction and facility plans, and advise you on site. If you wish, we will contact a certified inspector of your choice at an early stage to ensure that the plans comply with all pertinent regulations.

We are extremely meticulous when it comes to detailed design, which is either performed separately in a CAD system or, at the customer’s request, integrated into existing building plans. In addition, you will receive a piping and instrumentation diagram (P&ID), pressure-loss calculations, detailed technical documentation (such as data sheets, wiring diagrams), and a system owner manual for each system we supply. Coordination with fire-detection devices will also be handled by Callies. The setup of detector groups and the dispatch of fire-extinction commands under predefined conditions as well as the integration into fire-department guiding and orientation diagrams are also part of our planning.

The assembly and installation of our systems is executed by a dedicated assembly team in close contact with our specialized construction management, which also visits the construction sites regularly and attends meetings, in order to give advice on complex issues wherever it is required. You may also entrust us with coordination with other crafts, such as electricians, fire-alarm technicians, or utility engineers.

Callies will, of course, accompany the official inspector certifying the system. Experience has shown that in many cases, certain sections of the firefighting system are already put into service while construction is still ongoing. Proper documentation, briefing, and handover are of paramount importance. We vouch with our name for quality “without ifs and buts.”

In order to provide you with the best possible advice, it is imperative that we have a complete and comprehensive overview over your vehicle-based and stationary system projects. In the case of a vehicle installation, we cooperate closely with our customer and the vehicle manufacturer. For projects involving the installation of stationary extinguishing systems, we will always seek an on-site survey with our customer-to-be, in order to obtain an overall impression of the surrounding conditions as well. Only this way will we be able to offer you solutions that perfectly meet your goals and needs. So we take the time to listen to you and thus build a solid foundation for a successful long-term partnership.

The plans and data gathered and the common targets defined at the initial project survey will then be evaluated and summarized into a coherent concept. You will benefit from our specialists, our wide range of products and services, and our in-depth knowledge of the industry.

With the proposal we make and the technical solutions we suggest – based on our profound expertise –, we will provide you with a dependable plan that suits your needs. In all this, transparency is of utmost importance to us.

If you accept the technical solution we propose, we guarantee the competent and professional installation of the system plus our qualified and experienced pipe specialist’s excellent workmanship.

We will stay closely in touch with our customers after the project has been completed. This allows us to respond quickly and flexibly to changing conditions, e.g. in production or storage, and to implement necessary adjustments with our well-assorted product portfolio on very short notice. If need be, we will work out a new protection goal, based on the existing pump system, with necessary alterations in pipe runs and/or nozzle arrangement. A personal consultation that focuses on the issues at hand will always be our priority. Anytime.