Fog Nozzle Reaction Calculator

Fog Nozzle Reaction Calculator

FAQs

How many GPM does a fog nozzle flow? Fog nozzles typically flow around 50 to 150 gallons per minute (GPM), depending on their size and design.

How do you calculate nozzle reaction? Nozzle reaction can be estimated using the formula: Nozzle Reaction (NR) = 0.0505 x Q x √NP, where Q is the flow rate in GPM and NP is the nozzle pressure in PSI.

How much PSI is a fog nozzle? Fog nozzles can operate at various PSI levels, typically ranging from 50 to 100 PSI or more.

What is the formula for the nozzle reaction of a fog nozzle? The formula for nozzle reaction is: Nozzle Reaction (NR) = 0.0505 x Q x √NP, where Q is the flow rate in GPM and NP is the nozzle pressure in PSI.

Which is better smooth bore or fog nozzle reaction? The choice between smooth bore and fog nozzles depends on the specific firefighting situation. Smooth bore nozzles typically have lower nozzle reaction but provide a more concentrated stream, while fog nozzles can deliver a dispersed spray pattern. The choice depends on the fire conditions and tactics.

How many GPM is a 15/16 tip? A 15/16 tip is often used with a fog nozzle and can flow approximately 95 to 125 GPM.

How much nozzle reaction can one person handle? A general guideline is that one person can handle a nozzle reaction of up to 50 pounds of force, but this can vary depending on the firefighter’s training, equipment, and physical condition.

How does nozzle size affect flow rate? Nozzle size directly affects the flow rate. A larger nozzle will generally allow for a higher flow rate, while a smaller nozzle will restrict the flow.

What is the formula for GPM? The formula for calculating GPM (Gallons Per Minute) is: GPM = (Area of opening in square inches) x (Velocity in feet per second) / 231 (to convert cubic inches to gallons).

Why does FDNY use smooth bore nozzles? The FDNY (New York City Fire Department) and other fire departments use smooth bore nozzles for their ability to provide a longer reach and penetrate fire more effectively. They are well-suited for high-rise firefighting and other challenging scenarios.

Why are fog nozzles better? Fog nozzles are better in some situations because they can create a dispersed spray pattern, which is useful for cooling, controlling smoke, and protecting firefighters from radiant heat. They are also versatile and can be adjusted for various firefighting tasks.

What GPM is considered a master stream? A master stream typically refers to a large-flowing stream used for heavy firefighting operations. It can range from 350 GPM to several thousand GPM, depending on the specific equipment and application.

How do you calculate nozzle pressure? Nozzle pressure is typically calculated by adding the required nozzle pressure (NP) to overcome friction loss in the hose. The formula is: Nozzle Pressure (NP) = NP required for nozzle + Friction Loss in Hose.

What is the operating pressure for a nozzle? The operating pressure for a nozzle can vary depending on the type and size of the nozzle. It’s typically in the range of 50 to 100 PSI for fog nozzles.

How do you calculate the force of an air nozzle? The force of an air nozzle can be calculated using the formula: Force = Pressure (PSI) x Area (Square Inches). The area is the cross-sectional area of the nozzle opening.

What are the four types of fog nozzles? The four main types of fog nozzles are constant gallonage fog nozzles, automatic adjustable gallonage fog nozzles, fixed orifice fog nozzles, and variable flow fog nozzles.

What is a disadvantage of using fog nozzles to produce finished foam? One disadvantage of using fog nozzles to produce finished foam is that it may not be as effective as specialized foam nozzles in creating a stable and long-lasting foam blanket for certain firefighting applications.

What is the PSI for 1 3/4″ hose? A common operating pressure for a 1 3/4″ hose is around 100 to 150 PSI.

How many GPM is 80 psi? At 80 PSI, a 1 3/4″ hose may flow approximately 100 to 125 GPM, depending on factors such as nozzle type and hose condition.

What is the GPM flow from a 15/16″ nozzle flowing at 50 psi? A 15/16″ nozzle flowing at 50 PSI can deliver an estimated flow of 125 to 150 GPM.

How many GPM is 100 psi? At 100 PSI, a 1 3/4″ hose may flow approximately 150 to 175 GPM, depending on nozzle and hose conditions.

What pressure is a master stream fog nozzle? A master stream fog nozzle may operate at pressures ranging from 80 PSI to 200 PSI or more, depending on the specific equipment and firefighting requirements.

Does a smaller nozzle increase pressure? No, a smaller nozzle does not increase pressure; it restricts flow and may require higher pressure to achieve the desired flow rate.

How much nozzle reaction can one firefighter handle? As previously mentioned, a general guideline is that one firefighter can handle a nozzle reaction of up to 50 pounds of force, but this can vary based on several factors.

Does increasing pipe diameter increase flow rate? Yes, increasing pipe diameter can increase the flow rate because it reduces frictional losses and allows for greater volume of water to pass through.

Does a nozzle increase pressure or velocity? A nozzle increases velocity while maintaining or reducing pressure. It accelerates the flow of water, which results in higher velocity and a more focused stream.

Does flow increase with pipe size? Generally, flow increases with pipe size because larger pipes offer less resistance to flow and can accommodate higher volumes of fluid.

How many gallons per minute can flow through an 8-inch pipe? The flow through an 8-inch pipe can vary based on factors like pressure and fluid properties, but it can handle a substantial flow, potentially in the thousands of GPM.

How many GPM can flow through a 1″ pipe? The flow through a 1″ pipe depends on factors like pressure and fluid type, but it typically ranges from 10 to 40 GPM.

What is a good well flow rate? A good well flow rate varies depending on local geological conditions, but a flow rate of 5 to 10 gallons per minute (GPM) is often considered acceptable for residential use.

How do fog nozzles work? Fog nozzles work by breaking water into tiny droplets, creating a mist or fog. This fog can be used to cool and suppress fires, control smoke, and protect firefighters from radiant heat.

What is a FDNY Super Pumper? The FDNY Super Pumper was a specialized firefighting apparatus used by the New York City Fire Department. It was designed to provide extremely high-volume water delivery for large-scale fires and emergencies.

What is the NFPA standard for nozzles? The NFPA (National Fire Protection Association) has various standards related to firefighting equipment, including nozzles. Specific standards may be updated over time, so it’s important to refer to the latest NFPA documentation for precise information.

How do you clean a fog nozzle? Fog nozzles can be cleaned by disassembling them and using water or specialized cleaning solutions to remove debris and buildup. Follow the manufacturer’s guidelines for cleaning and maintenance.

What is the difference between a fog nozzle and a misting nozzle? Both fog and misting nozzles create fine droplets, but fog nozzles typically produce larger droplets and are used in firefighting and industrial applications. Misting nozzles create smaller droplets and are often used for cooling and humidification.

What is one disadvantage of using automatic nozzles? One disadvantage of automatic nozzles is that they may require more maintenance and can be more complex than fixed orifice nozzles.

What PSI do you flow a master stream at? Master streams are typically operated at higher pressures, often in the range of 80 to 200 PSI or more, depending on the specific equipment and firefighting needs.

What is the rule of thumb for fire pumps? A common rule of thumb is that fire pumps should provide a flow rate of 100 gallons per minute (GPM) at a pressure of 150 PSI for every inch of hose diameter.

What PSI should a deck gun flow at? Deck guns are typically operated at pressures ranging from 80 to 125 PSI, depending on the specific equipment and firefighting situation.

How much PSI is a 40-degree nozzle? A 40-degree nozzle typically operates at a pressure of around 40 PSI.

What is the optimum nozzle pressure? The optimum nozzle pressure depends on the specific nozzle and firefighting conditions but is typically within the range of 50 to 100 PSI for fog nozzles.

What is the K factor for a nozzle? The K factor, also known as the coefficient of discharge, represents the relationship between the flow rate and the pressure drop across a nozzle. The K factor is unique to each type and size of nozzle and is used in flow calculations. The specific K factor varies based on the nozzle design.