Used for optimizing the production line utilization rate, these single or independent double plug valves allow for exploiting the lines with an optimal sanitary protection level. The mixproof valve has an integrated leak chamber, able to detect a seal failure while avoiding the risk of cross contamination. Independent double plug valves permit the safe mixing of two different fluids. The independent opening and closing of the valve ensure a thorough cleaning of the valve without opening it.

Vacuum breakerhose

The vacuum pressure relief valve is a tank protection device used during the pressure and vacuum phases. The valve exhaust is not channeled.

The choice of equipment for controlling and signaling dépends on the overall installation, the safety level necessary and the feedback needed. Definox control tops ensure the control and command of valves from a distance. They send a real time alert of any possible malfunction for an immediate intervention. The newest generation of control tops on offer from Definox are equipped with the latest technologies in terms of interconnectivity and features. Definox valves can also receive other simple signalization devices.

We propose various ranges of products that adapt to local cultures and to chemical and hygienic constraints. It is the guarantee of a high level of reliability, an essential challenge in the sector and a decisive argument for consumers.

In the plumbing world, the need to protect the potable water supply from the dangers that come from backflow and back siphonage is so well understood that to call it common knowledge would be a bit of an understatement. The 2015 Uniform Plumbing Code touches on the various methods to prevent backflow and backsiphonage in section 603.3, but diving a bit deeper could be useful.

During the transfer cycle, production lines can stock up an important quantity of residual product. The pig is pushed through the pipe by a fluid. The pigging solutions STARMOTION are modular and adapt easily to different process types. For specific environments or on applications needing adaptations (version double envelope, configuration double pigs), Definox's solutions are personalized almost to infinity following the customer's spécifications.

Sampling consists of removing a quantity of liquid to verify its aspect, its composition or its quality. Before sampling, the sampling devise needs to be sterilized (sterilization in line by cleaning products or steam flashing or flame sterilization of valve paths). Most often installed on tanks or filling pipes, the sampling valves PEX PEAX embed easily thanks to their multiple connections and allow to collect fluids from the most liquid to the most viscous.

A divert valve is used for directing the flow in a given direction. It allows the flow to be stopped in the upper or lower valve path or allows the flow to run freely along both paths. The choice of body configuration is related to the geometry of the process lines. The Definox range of valves allows for every useful valve body configuration, for the widest possible utilisation. For independent double plug valves, there are more than twenty standard configurations available. Added to that is a stepped and 3-body version that allows for increasing the number of combinations.

The seriousness of the sanitary conditions of some processes or manufactured products calls for aseptic valves. The Definox aseptic valves have either a physical barrier between the interior and exterior of the valve, or a built-in device for sterilizing the valve components in contact with the exterior. Steam flash sterilization, alcohol barrier, PTFE diaphragm, there are as many varieties as processes and manufactured products.

Double independent plugs Double sealing shut-off and divert valves Double sealing butterfly valve

When I was in college — more years ago than I would like to admit — I served as a resident assistant in my university's residence halls. Each floor had a vacuum students could use to clean their rooms. Despite the infrequency with which college students actually used the vacuums, it was amazing at how often they were broken. It turns out that the rubber band that spins the brush in the vacuum head is really no match to the vast cornucopia of odd items that young adults attempt to suck off their floors. Strands of long hair, socks, power cords, money, toilet paper, tin foil, as well as other "not safe for publication" items were all found to have disabled the economically priced vacuum cleaners provided for student use. At this time in my life, vacuum breakers would have held a completely different meaning to me than it does today after years of exposure to the plumbing industry.

Because the wellbeing of their pets is the center of interest to their owners, the quality of our products must be at the center of our thinking. Supporting our customers in pet food production allows them to comply with the demands of the market

To satisfy the consumer, manufactured products come in endless varieties with more and more features, colors and flavors. The injection of concentrated flavors or colorants in the base product is a common procedure. These often-costly additives must be precisely dosed. The Starwheel or Starmanifold injection ssytems simplify the injection. By injecting these additives during transfer phases, the creation of batches becomes easier and making variants is faster. Productivity of the lines is optimized.

The most basic form of protection is the presence of an air gap in between the possible source of contamination and access to the plumbing system, usually a plumbing fixture. However, other mechanical measures are often needed to guarantee this protection and understanding when exactly to use one method of protection or another is worth discussing. For this reason, we will discuss the other types of vacuum breakers — the ones that keep our drinking water safe.

AtmosphericVacuum Breaker

The valve manifolds are essential elements for managing flow and are the link between the treatment Equipment, storage or transformation areas, and cleaning stations.

HVBs should be inspected and tested periodically to ensure they are working properly. Fortunately, their mode of operation permits inspections to be easily made. Verify the check valve closes and the atmospheric vent opens reliably whenever the water supply is shut off. It is very simple to do this if a nozzle that can be shut off is used on the end of the hose. When the nozzle shuts off, turn on the faucet and allow the hose to pressurize. Then, shut off the faucet while the hose is pressurized. After a few seconds, the hose pressure should be released in a small spray as the atmospheric vent suddenly opens.

In a costly market in terms of production and consumption, it is fundamental to avoid wasting resources. Notably, thanks to our pigging solutions and our long lasting leakproof products, we supply you with the tools needed to reach optimum productivity.

The Pharmaceutical market requires a strict control of the production line, at the same time being efficient and secure. In this extremely demanding sector, rigor is required, thus, the absence of retention zones of our products in the processes.

Tanks can be fitted with diverse parts or valves depending on their function (storage, fermentation, blending, etc.). Valves adapted for tank usage enable transfer operations, cleaning or sampling. These parts are the guarantee of protection, either when empty or under pressure.

Vacuum BreakerPVC

Vacuum BreakerValve

An HVB prevents backflow to the water supply by venting water to the atmosphere (onto the ground) when backflow conditions exist. A spring-loaded check valve is opened by the water supply pressure when outflow occurs through the valve. When pressure is sufficient to open the check valve, flow is directed into the garden hose. When the supply pressure is interrupted or when the pressure in the hose becomes greater than the supply pressure, outflow stops and the spring-loaded check valve closes, simultaneously opening a vent to the atmosphere. In this mode of operation, any water that flows backward through the HVB is vented onto the ground.The spring-loaded check valve does not allow drainage of water from between the hose bibb and the upper part of the HVB; thus, freeze protection must be provided, just as all outdoor plumbing would need to be protected under freezing conditions.HVBs should be inspected and tested periodically to ensure they are working properly. Fortunately, their mode of operation permits inspections to be easily made. Verify the check valve closes and the atmospheric vent opens reliably whenever the water supply is shut off. It is very simple to do this if a nozzle that can be shut off is used on the end of the hose. When the nozzle shuts off, turn on the faucet and allow the hose to pressurize. Then, shut off the faucet while the hose is pressurized. After a few seconds, the hose pressure should be released in a small spray as the atmospheric vent suddenly opens.Pressure vacuum breakersThe pressure type vacuum breaker evolved from the AVB. There are a number of AVB installation restrictions due to the limits of the design. One of the AVB's limitations is the restriction of no continuous water pressure. The concern of the inlet valve sticking closed is a serious one, as it would render the AVB useless. The PVB was designed to overcome this problem.The AVB has one moving part that works as an air inlet or port and it serves as a check valve to the supply piping when no water pressure is present. The PVB check valve is similar but spring loaded. When the piping-system pressure is reduced, the spring forces the check open to the atmosphere, allowing air into the system and breaking the downstream siphon.

The purpose of a vacuum breaker is to stop back siphonage. The atmospheric vacuum breaker consists of a check valve member and an air vent that is normally closed when the device is pressurized. The air vent allows air into the piping system for the purpose of stopping a siphon at the point of use (see Figure A). A common design element is that the air-inlet valve and check valve are nearly always the same mechanical component.

The continuous pressure restriction would no longer apply and would allow valves downstream and water pressure 24 hours per day. This type of assembly may be used only where outlet pressure will never exceed inlet pressure and is not subject to backpressure. This device may be installed indoors only if provisions for spillage from the dome are provided. They must be installed a minimum of 12 inches above the highest piping downstream of the PVB (see Figure C).

Go to our symbols Library 2D or 3D, available in all CAD formats 2D, 3D, native or neutral. Select and download the symbols from our online configurator.

When it comes to the potable water supply that the public utilizes, safety is the first priority. Vacuum breakers play an important part in that effort, and understanding when and where to use them and how they work can help maintain the highest level of safety.

Thanks to the hermetic properties, complying with qualificative hygiene and security standards, of our range of aseptic valves, your production line will be assuredly performant. Because our babies and toddlers deserve quality products.

PVBs, therefore, are designed to operate under pressure for long periods of time without becoming inoperative. The internal check valves are spring-loaded so that any tendency for the valve to stick closed due to long periods of applied pressure and consequent fouling will be counteracted.The continuous pressure restriction would no longer apply and would allow valves downstream and water pressure 24 hours per day. This type of assembly may be used only where outlet pressure will never exceed inlet pressure and is not subject to backpressure. This device may be installed indoors only if provisions for spillage from the dome are provided. They must be installed a minimum of 12 inches above the highest piping downstream of the PVB (see Figure C).Spill-resistant vacuum breakersThe spill-resistant type vacuum breaker is essentially a next-generation PVB. This assembly evolved because of the spillage encountered with the PVB. The function of the SVB is to eliminate the water spillage of the PVB.

Vacuum breakertoilet

The autonomous sanitary vent AVX1 ensures protection against vacuum and overpressure of inert tanks (sterile air or neutral gas).

Vacuum breakeroutdoor faucet

The AVB has one moving part that works as an air inlet or port and it serves as a check valve to the supply piping when no water pressure is present. The PVB check valve is similar but spring loaded. When the piping-system pressure is reduced, the spring forces the check open to the atmosphere, allowing air into the system and breaking the downstream siphon.

DEFINOX accompanies you in managing hygienic process issues through our products guaranteeing your satisfaction and the respect to your process,

Isolation valves are often associated with another function, depending on the type of seal (all elastomer, diaphragm, metal to metal), the intended usage of the valve (sampling, adjusting, protecting other parts) but also the environment in which it is used (aseptic, explosive…). The main isolation usage consists in isolating the entire line, or a part of the fluid flow process, by totally closing off the liquid flow. The choice of the valve is made in function to the material wanted, the diameter in relation to the lines they will be installed on, as well as the conditions of use and cleaning.

A hose connection vacuum breaker should be installed on each faucet or hose bibb that is connected to the potable water supply to prevent backflow into the water supply. HVBs must be installed at least six inches above the ground surface. The HVB is an AVB and must follow the installation parameters of Table 603.2. Most HVBs have a set screw that prevents them from being easily removed once they are installed. This prevents them from being removed when the garden hose is removed. Once the HVB is installed, no further adjustments are required (see Figure B).

Vacuum breakerpurpose

The pressure type vacuum breaker evolved from the AVB. There are a number of AVB installation restrictions due to the limits of the design. One of the AVB's limitations is the restriction of no continuous water pressure. The concern of the inlet valve sticking closed is a serious one, as it would render the AVB useless. The PVB was designed to overcome this problem.

The spring-loaded check valve does not allow drainage of water from between the hose bibb and the upper part of the HVB; thus, freeze protection must be provided, just as all outdoor plumbing would need to be protected under freezing conditions.

Regulating valves enable precise output adjustment. They can be used for controlling a filling level, additive dosage or adjusting a blending temperature. Fitted with seals they also work in isolation. It is therefore possible to progressively start or stop the flow to limit jumps and jolts without adding extra valves. In line with the flow rate we define the geometry of the plug most adapted to your needs. The dedicated actuator positions and adjusts the valve opening and waits for the required flow rate.

Vacuum breakerspigot

The spill-resistant type vacuum breaker is essentially a next-generation PVB. This assembly evolved because of the spillage encountered with the PVB. The function of the SVB is to eliminate the water spillage of the PVB.

Our different range of products are designed to cover a vast array of food processes. Our valves are designed to last for today and tomorrow; with the aim of healthy food and quality for everyone.

Definox is known for its ability to design personalized equipment adapted to modern sanitary processes. Using client spécifications, our sales team, supported by our integrated Design and R&D department, study the best solutions adapted to the constraints on production and cleaning. Our industrial flexibility contributes to the manufacturing of made to measure assemblies or specific valves conforming to our clients demands.

To protect peripheral equipment, notably from over-pressure or under-pressure that might occur during the process, it is strongly advised to install protective devices. These protective devices enable either pressure relief or the right allowance for under-pressure.

Definox offers a range of services to support and advise you; spare parts management, valve retrofitting, personalized follow up program for valves and intervention schedules, valve maintenance training or even testing on our test bench. As many services to fit your needs.