Fire sprinkler head gpm chart. A fire sprinkler head has a K-factor of 5.

Fire sprinkler head gpm chart Key steps include calculating pressure and flow at each sprinkler head working backwards from the most remote head and accounting for friction RCI Fire Systems has officially joined the National Fire & Safety family—uniting our expertise, service, and resources to deliver best-in-class fire protection solutions. ) of the building, and more specifically, the area the Oct 23, 2019 · These include fire-resistant exposed walls with 3-hour minimum resistance, automatic closers over wall openings with ¾-hour minimum protection, installing automatic sprinkler exposure protection over wall openings, or installing automatic sprinkler exposure protection over the entire exposed wall surface. Dec 8, 2023 · The average usage of water in a residential sprinkler system is between 12 – 30 gallons per minute depending on the type and size of the sprinkler head. Dec 22, 2020 · How is a fire sprinkler system created? Learn about the design process, basic math, and system components used for fire sprinkler system design. 2 days ago · This illustration is an example of a fairly standard 3-valve sprinkler system. Examples of design criteria include: 0. Jun 17, 2025 · Rotor heads, meanwhile, are designed for larger areas and can cover more ground with a single sprinkler. Includes pump sizing, friction loss, K-factor, and pressure demand analysis. Installation tips have also been placed throughout the guide to assist you in planning a system. 0 psi (as is required by NFPA 13), we get a flow of 5. FLOW CHART (0. Aug 17, 2023 · Fire sprinkler “cut sheets” can be confusing. Performance data collected in zero wind conditions. Several criteria may apply to a given installation and the designer and/or installer must be familiar with the applicable codes, standards, and guidelines governing such an installation. A. Dec 5, 2017 · Fire sprinkler system pipe size calculation depends on Hazen William equation which is the main method for sizing most of the piping systems such as fire sighting pipes. What is a good GPM for a sprinkler system? The minimum pressure while flowing the required standpipe flow (500 GPM from the hydraulically most remote standpipe and 250 GPM from each additional standpipe, up to a maximum of 1000 GPM for a fully sprinklered building) shall be 100 psi at any valve outlet while flowing 250 GPM through each valve. They are choices based on all of the information gathered about the site as well as an understanding of basic hydraulics. A fire pump rated at 600 GPM @ 65 PSI is selected to boost pressure. Feb 9, 2020 · However, you should pay careful attention to the churn pressure (sometimes also called shut-off or dead-head pressure). This guideline applies to any new and existing fire sprinkler systems for residential buildings classified and one and two-family dwellings. Figure 2 includes a plot of the pump curve with churn pressure being 120% of the pump’s The chart above answers the question about how to determine what size you need. Here’s how to read Victaulic sprinkler data sheets to find the right sprinklers & parts. When the ambient temperature reaches the rated temperature of the sprinkler, the bulb shatters. Below is a summary of requirements from the 2002-2019 editions of NFPA 13 and 13R, and the 2000-2019 edition of NFPA 14. The K factor for sprinklers is NOT the same as a fitting K factor (which is used with a velocity2 element to calculate head loss). Examples include: Light Hazard, Ordinary Hazard Group 1, or Extra Hazard Group 2 Sprinkler Design Criteria is the quantitative way to hydraulically calculate a fire sprinkler system. Nov 6, 2019 · This week, I simplified a few of these parameters to create a quick inspector's test and drain calculator for fire sprinkler systems. With the above excel sheets you can make all hydraulic calculations for fire sprinklers systems. Use our Fire Flow Calculator to compute required GPM for hydrants, safety codes, and firefighting systems. If the water pressure at the sprinkler head is 25 psi, what is the flow rate of water discharged from the sprinkler head in gallons per minute (GPM)? I-20 Ultra, I-25 Plus, I-40 and I-42 pop-up sprinklers should be installed at grade as shown here. This applies specifically to the Density/Area method of Hydraulic Calculations in NFPA 13. It provides equations and examples of calculating flow rates, pressure losses, and pipe sizing for symmetrical and non-symmetrical tree layout sprinkler systems. Sep 23, 2018 · This excel sheet calculator performs all hydraulic calculations for fire sprinkler system. PIPE RISE CONCEALED/SEMI-RECESSED SPRINKLER HEAD PIPE BRANCH TAKE-OFF FROM TOP UPRIGHT SPRINKLER HEAD FIRE PROTECTION PIPING STANDPIPE PIPING SPRINKLER PIPING This is defined as: Q = K √ (P) Where: Q = Flow rate (US gpm or l/min, K has units of US gpm/psi 0. One of the most critical factors in achieving this goal is understanding the optimal flow rate for each sprinkler head. Nozzle Comparison Chart A Nozzle for Every Setting From the water-saving MP Rotator to standard sprays and side-strip specialty nozzles, Hunter provides a solution you can trust for years on end. It does not represent the actual amount of flow from a main drain or inspector's test. When a fire pump is not flowing any water it produces the highest discharge pressure. In fire protection system, the K-factor formula is used to calculate the volumetric flow rate from the fire sprinkler (sprinkler head), water mist nozzle, or deluge fire system nozzles. Save energy and cost. Choosing the right sprinkler pipe size is crucial when building an efficient irrigation system. There are detailed illustrations depicting suggested installation methods for sprinkler heads, pipe and valve manifolds, and how to connect the sprinkler main line into the house water system. May 18, 2021 · 5. K25. He is responsible for strengthening AFSA's engineering and technical approaches to meeting member, industry, and operational priorities, with an emphasis on service, quality, and integrity. What is the 3x rule sprinkler? 1. From a low of 2 gpm to over 20 gpm, fewer sprinklers are required and pivot package costs are re-duced. For use with for fire sprinkler and water mist heads. The minimum pressure while flowing the required standpipe flow (500 GPM from the hydraulically most remote standpipe and 250 GPM from each additional standpipe, up to a maximum of 1000 GPM for a fully sprinklered building) shall be 100 psi at any valve outlet while flowing 250 GPM through each valve. Jan 13, 2021 · K-factor helps to calculate the discharge rate from fire sprinkler heads. 13 1. Consulting Fire Department Resources Fire InspectionsEmail us for updates High Efficiency, Multi-Stream Rain Bird® R-VAN Adjustable Rotary Nozzles save more water, are easier to use, and are lower priced compared to leading rotating nozzles. LOW PRESSURE. Jul 14, 2021 · One of my wanted items on my personal to-do list was a full lineup of flow charts that incorporate discharge coefficients coming off a fire hydrant. It illustrates the relationship between water pressure and flow rate, allowing engineers to ensure adequate water distribution during a fire emergency. Reliable fire sprinkler systems are built with the designer and installer in mind, helping you protect lives and property from fire in even the toughest situations. Apr 5, 2025 · Confused about sprinkler pipe sizes? This guide explains how to read a sprinkler pipe size chart, calculate flow rates, and choose the right pipe for efficient lawn irrigation. Aug 29, 2022 · This in turn means that the flow rate from 3A to 2A will not be 45. At different pressures, the sprinkler head and nozzle will consume different amounts of water. As a result, the waterway is cleared of all sealing parts and water is discharged towards the Dec 1, 2020 · NFPA 13’s small room rule is a convenient allowance for fire sprinkler designers. #25. Free online GPM Calculator - Calculate gallons per minute for plumbing, irrigation, well systems, and water flow applications. Begin by finding the pipe material you have chosen, as well as the flow rate that you have calculated. 31 blue standard / gray note: If you are unsure which emitters to choose, here are some popular options Square spacing based on 50% diameter of throw. Use this chart to match your system’s flow rate with the right sprinkler type. Based on building size, risk, and NFPA guidelines. A fire sprinkler head has a K-factor of 5. May 15, 2020 · A typical fire sprinkler design requires 26 gpm, which is fine for 3/4-inch and 1-inch meters, but exceeds the maximum flow for 5/8-inch meters. Flow gpm precip in/hr psi 40 = recommended 40 43 10. NFPA 13R, 13 and NFPA 14 differ slightly in how they each address requirements of the fire department connection. 6 gpm, but 49. AMERICAN FIRE SPRINKLER ASSOCIATION John August Denhardt, P. 10 gpm/sqft over the most remote 1,500 sqft, 6. Dec 28, 2023 · A typical fire sprinkler design requires 26 gpm, which is fine for 3/4-inch and 1-inch meters, but exceeds the maximum flow for 5/8-inch meters. Jul 4, 2022 · Proper hydraulic demand calculations are critical in the early stages of a water-based fire protection project. Manually rotate sprinkler nozzle from stop to stop to determine sprinkler orientation. 2 ESFR sprinklers can: Determine the maximum safe flow in GPM for your pipe sizes with our guide. Explore our full range of fire and life safety services, backed by the strength of National Fire & Safety. Pressure Output. Apr 22, 2025 · The sprinkler head GPM (Gallons Per Minute) chart is a crucial reference tool for determining water flow requirements in fire sprinkler systems. 0 mm glass bulb thermal element. For example, at 35 pounds per square inch (PSI) the 5000 Series Rotor using the 3. Related Resources: calculators Fire Sprinkler Discharge Calculator (simplified) Fluids Flow Design and Engineering Fire Sprinkler Discharge Calculator (simplified) This calculator determines the typical discharge vs flow rate of a sprinkler head Preview: Fire Sprinkler Discharge Calculations Eq. The tables provide the minimum www. why matched precipitation is important For your sprinkler system In order to talk about nozzle selection, we need to Sprinkler Head Gpm Chart Sprinkler Head Gpm Chart - These include how strong your water pressure is, how much water flows through your. Competitive sprinklers require at least two models. Triangular spacing based on 50% diameter of throw. Same and Next Day Delivery. Turn nozzle screw clockwise to reduce spray distance up to 25%. Apr 30, 2019 · We will be looking at the Aurora Pump Model 912 Horizontal Split Case Pump for Fire Protection. 1 Q = n · [ K · P 1/2 ] Where Q = flow (gpm) Aug 16, 2023 · A typical fire sprinkler design requires 26 gpm, which is fine for 3/4-inch and 1-inch meters, but exceeds the maximum flow for 5/8-inch meters. Performance Metrics: Gallons per Minute (gpm) and Beyond When selecting a sprinkler head, one of the key performance metrics to consider is the gallons per minute (gpm) rating. Mar 7, 2022 · Happy to bring about a new one to the table today. As hazard levels escalate from Light to Extra Hazard, the required GPM/SF ratio increases, which means more water is discharged over the area to effectively manage the potential Steps On How To Find Gallons Per Minute (GPM) Sprinkler systems can be traced back to3000 BC when the ancient Babylonians built irrigation systems from clay and straw. All Shop our large lineup of spray heads for a variety of pop-up heights and nozzle combinations. Here are some FAQs about the requirements, benefits, and applications of the rule. Shop our large lineup of spray heads for a variety of pop-up heights and nozzle combinations. Nov 26, 2019 · The water demand for firefighting sprinkler systems shall be determined by either the pipe schedule method or the hydraulic calculation method, in this article we will discuss the pipe schedule method. Additionally, how many gpm does a fire sprinkler head use? A sprinkler system should be designed so that water flow is at least 15 gallons per minute (gpm) and up to a maximum of 40 gpm. 2 gpm, which in turns means the friction will be higher, which in turn will result in lower pressure at junction 2A, which in turn lowers flow to sprinkler 3, which in turn decreases friction and it goes on back and forth until in more or less stabilizes numerically. Jun 25, 2025 · Sprinkler As the world becomes increasingly aware of the importance of water conservation, many property owners and facility managers are scrambling to optimize their irrigation systems. But, what is the ideal number of gallons per minute (GPM) per sprinkler head, and how can Oct 25, 2018 · Viking residential sprinklers listed by Underwriters Laboratories, Inc. These (in my line of work) are most commonly used This guideline applies to any new and existing fire sprinkler systems for residential buildings classified and one and two-family dwellings. Different types of sprinkler heads, such as impact, rotor, and spray, have varying flow rates due to their design and functionality. Fire Sprinklers: Design Classifications The sprinkler system design is based on a required water flow rate (gallons per minute, GPM) and the designated coverage area (square feet, SF). Learn the basic hydraulic terms for flow rate, pressure (psi) and K-factor of the sprinkler head. Aug 8, 2018 · Other than the Toolkit, users of the comprehensive Fire Sprinkler Database can sort & search among k-factors as one of the parameters when comparing sprinklers. 8 gpm There's a wide array of k-factors available on the market, and a wide variety of minimum sprinkler pressures too. 5 Copper NFPA 13R, 13 and NFPA 14 differ slightly in how they each address requirements of the fire department connection. It guides you through nozzle selection using built-in performance charts and helps you determine the ideal sprinkler head quantity to maximize flow. By understanding the differences between -Storage rooms with storage height of 8 feet or less (and meeting the above cri-teria for the quantity and combustibility of contents). Next, locate your system’s static pressure and move down that column and find the system’s working pressure; record it in the PSI box. During a fire, the ambient temperature rises causing the liquid in the bulb to expand. Choosing the right fire sprinkler is critical to the success of a sprinkler system in controlling or extinguishing a fire. The Secrets Behind Successful Sprinkler Spacing and Design Knowing the types of sprinklers that are best for a job and determining where to place them for maximum efficiency and economy are decisions that begin early in the design process. 5 or l/min/ (bar) 0. Typical sprinkler Discharge Coefficients might be: Free fire pump flow calculator for accurate system specifications. Jun 17, 2025 · Understanding Sprinkler Head Flow Rates Sprinkler head flow rates are influenced by several factors, including the type of sprinkler head, nozzle size, and operating pressure. 6 x √7 = 14. Oct 1, 2012 · Most fire departments calculate the friction loss for the hoses and nozzles they carry and write them on what is called a “pump chart. 70 COEFFICIENT) FLOW CHART: FLOW (GPM) USING A 0. Save inventory and cost. Buy direct to connect with Rain Bird irrigation experts. The bottom of the chart shows the results for the recommended pipe size. This tool estimates the maximum amount of flow that could come from an inspector's test or main drain. From the flow test, it is seen that city water has a static pressure of 45 PSI, and a residual pressure of 30 PSI @1100 GPM (See Figure 1). Design automatic fire sprinkler systems, standpipe systems, fire pumps, and underground systems. While developing the flow, working pressure, and pipe sizing charts, we considered reasonable friction In Fire sprinkler design and hydraulic calculations the design density is one of the most important concepts. GPM Rating - Aboveground Only Systems For situations where the pressure maintenance pump serves only aboveground piping for fire sprinkler and standpipe systems, the pressure maintenance pump should be sized to provide a flow less than a single fire sprinkler. Use the flow specification for the sprinkler from the manufacturer or if not listed use 18 gpm for 1 design head or 13 gpm per sprinkler for a 2-sprinkler design Purpose: To establish uniformity in requirements for sprinkler system and hose valve flow and pressure requirements when supplied by a fire pump. Discover crucial methods and tips for selecting the right pump for any sprinkler system. It’s calculated in imperial units for the United States by using the flow in gallons per minute (gpm) and the pressure in PSI. For more fire protection resources, including free code-based summaries like this, visit and subscribe at Discover our extensive range of high-quality fire sprinklers designed for every application and configuration. R-VANs are easier to use thanks to its hand-adjustable arc and radius. Most home fire sprinkler systems accommodate two simultaneous flowing sprinklers, with a minimum need of 16 GPM to supply them with water. R-VANs thick streams and large water droplets cut through the wind to deliver water where you want it. This guideline defines the requirements to obtain a permit for any new or existing fire sprinkler systems for plan submittal requirements, testing, and Fire Department notes required to be applied onto plan. We will be replicating a typical warehouse application where sprinkler system demand is 1000 GPM and the pressure is 100 PSI. Ensuring these systems operate efficiently requires a precise calculation of the flowrate—the volume of water delivered through the system per unit of time. Also Know, how do you The trajectory and spray height of the water stream leaving a sprinkler nozzle is important information when designing and installing irrigation systems. All information shown is at optimum operating pressures. 9 1. E. Use my Sprinkler Zone Calculator to determine how many zones you need based on your water pressure, GPM, and sprinkler head requirements. There are several things that affect how many sprinkler heads you can put in each zone. for various maximum spacings in accordance with minimum flows and pressures. It also includes tables specifying pipe schedules, flow rates, water pressures, and durations for sprinkler systems based on the occupancy classification and pipe size. A Part Numbers and Ordering Information Sprinkler Only Sprinkler without Nozzle A05840 This guide will provide a water purveyor with information on the topics that need to be addressed in preparing a jurisdiction for fire sprinklers in single-family dwellings. hunterirrigation. Dec 12, 2023 · What is the minimum GPM for yard sprinkler system? The standard sprinkler flow rates, in general, are from 4 gallons per minute (gpm) from a 5/32-inch nozzle at 30 pounds pressures to over 11 gpm from a 7/32-inch nozzle at 70 pounds pressures. The standards for residential sprinkler performance and spray patterns are printed in Underwriters Laboratories Publication UL 1626, “Standard for Residential Sprinklers for Fire Protection Service”. HIGH CAPACITY. The chart above answers the question about how to determine what size you need. Using the System Design Capacity Chart on this page, locate the three numbers you just recorded to determine the Sprinkler System Design Capacity in gallons per minute (GPM). Choosing the Right Fire Sprinkler – Part 1 Choosing the right fire sprinkler is critical to the success of a sprinkler system in controlling or extinguishing a fire. Spacing A Residential Sprinkler is Listed by Underwriter’s Laboratories, Inc. Use our Sprinkler Selector (opens in a new window) to quickly identify the right products for your project. 2 ESFR sprinklers can: May 18, 2021 · 5. This video helps you learn to select the right nozzles for your system’s rotors to ensure your sprinkler system is running at its optimal level. Extended coverage, residential, attic, storage, and ESFR all vary in required minimum pressures. Mar 25, 2020 · Q = Flow (gpm) k = Sprinkler k-Factor P = Pressure (psi) With a 5. If your home's water capacity was 10 GPM, you could place 3 heads per zone. It ensures that the sprinkler system can handle potential fire scenarios and comply with safety regulations. This document provides design guidelines for Reliable residential sprinklers and all available models are detailed in Table A. This rate is denoted as GPM/SF. Jul 11, 2018 · One fire sprinkler can use on average eight gallons-per-minute (GPM). How do I calculate zones for my sprinkler system? Calculating the right number of zones is critical for your sprinkler system's performance. One number that I seem to always need to crunch when laying out or reviewing fire sprinkler systems is the remote area adjustments, and the minimum width of a remote area. 704 Orifice x 3/4” NPT - Pendent Only 1. Ensure optimal performance and avoid overloading your irrigation system. Get instant results tailored to your property's unique requirements. Jun 29, 2019 · One may also ask, how many gpm does a fire sprinkler head use? A sprinkler system should be designed so that water flow is at least 15 gallons per minute (gpm) and up to a maximum of 40 gpm. Detailed hydraulic calculations for fire sprinkler systems, including tree layouts, Hazen-Williams equation, and practical examples. A Fire Sprinkler Calculator helps determine the number and placement of sprinklers needed to provide effective fire protection. Driver Detailed guide to fire protection hydraulic calculations using NFPA 13, 14, and 20. Aug 16, 2023 · A typical fire sprinkler design requires 26 gpm, which is fine for 3/4-inch and 1-inch meters, but exceeds the maximum flow for 5/8-inch meters. In general most fire sprinkler components are listed to 175 psi. The size of a house, local building requirements, and the water source may require more sprinklers or be required at a higher pump rate. The Reliable Model F1/Res The Hunter Sprinkler Zone Calculator is your all-in-one tool for calculating flow and zone capacity. This article unpacks the concept of a fire sprinkler's K-factor and how it affects a fire sprinkler system design and performance. Sprinklers should be chosen by evaluating the occupancy, hazards, and conditions (ceiling height, type of construction, ambient temperature, available water supply, etc. The addition of a larger K-Factor allows ESFR performance at lower end-head pressures than ESFR K14 sprinklers. ” Most charts list the nozzles on the apparatus, their gpm Need Help Choosing the Right Rotor Nozzle? Start Here. , ET, FSFPE, CWBSP, is Vice President of Engineering and Technical Services for AFSA. You might use PVC or polyethylene tubing to deliver water to the sprinkler head. At 9 gpm each, these heads will protect a 14' x 14' area up to 7' from a wall. This document provides tables and information for classifying occupancies and their fire sprinkler requirements. One solution would be to use low-flow sprinkler heads to lower the system demand at or below 20 gpm. 6 k-factor and a minimum pressure of 7. An example is the multiple head calculation of a Model R-1M. 5 depending on the published literature. (UL) have passed fire tests designed to represent fire conditions for the sprinkler’s listed area of coverage. Although there is general information provided on all sprinkler systems this guide will concentrate on fire sprinkler system for one- and two-family dwellings, manufactured homes and townhouses. 6 (gallons per minute per square root of psi). 0 Pipe Sizes and Permissible Number of Heads for Sprinkler Systems Go To Full Code Chapter Calculate Spray Nozzle Volume (GPM / Gallons Per Minute) at Various Pressures (PSI / Pounds per Square Inch) with this chart. com Jun 14, 2024 · Learn to Fire Pump Sizing accurately with our guide. It is High Efficiency, Multi-Stream Rain Bird® R-VAN Adjustable Rotary Nozzles save more water, are easier to use, and are lower priced compared to leading rotating nozzles. Example: After calculation, it is found that sprinkler system demand is 650 GPM @ 95 PSI. Online k factor calculator to calculate any of the three variables, flow, pressure and k factor. Aug 27, 2024 · Understanding the K-factor for fire sprinkler heads is critical for anyone involved in the design, installation, or maintenance of fire protection systems. Multiple calculation methods and instant unit conversions. Model “Automatic” K-1 ESFR (Early Suppression/Fast Response) Glass Bulb Sprinkler, Model K-1 - . This tool will help you avoid overloading your system and ensure even watering across your yard. For more fire protection resources, including free code-based summaries like this, visit and subscribe at New York City 1938 Code > 16 Sprinkler Systems > §C26-1355. 0 nozzle will use 3. I’m your Sprinkler Warehouse product specialist, let’s get started. Understanding how to calculate flowrate for sprinkler systems is vital to design effective Learn more Being able to read a sprinkler performance chart is a necessary skill for selecting the proper sprinkler and nozzle for your application. Feb 24, 2025 · The behavior of a fire sprinkler is significantly influenced by a single parameter: the K-factor. Fire protection systems design engineers always perform hydraulic calculation for fire fighting systems so as to estimate fire pump size and network pipe sizing Friction Loss Constants Appliances Master streams Aerial waterway Standpipes Elevation Sprinkler Systems Residual intake pressure Maximum pump pressure Residential fire sprinkler systems should only be de-signed and installed by competent individuals trained and experienced with automatic sprinkler system de-sign and installation. In order to save space Mar 22, 2022 · Providing water to the responding fire department is a crucial aspect of the overall fire protection and life safety strategy of an entire community. Nov 18, 2020 · Basic Hydraulic Calculation Tips. Figure 2 includes a plot of the pump curve with churn pressure being 120% of the pump’s Choose from our selection of fire sprinkler heads, including over 50 products in a wide range of styles and sizes. SPRINKLER OPERATION The operating mechanism is a frangible glass bulb which contains a heat responsive liquid. 05 gpm/ft2 (2. Record this number in the GPM box. Mar 8, 2025 · Before diving into the details, here’s a quick reference chart summarizing the GPM for different sprinkler types. Regardless of the type, the standard requires that the water supply for a home fire sprinkler system accommodate one or two operating sprinklers for a period of seven to 10 minutes. Jun 3, 2022 · The occupancy hazard fire control approach to designing today’s fire sprinkler systems includes single-point densities since the NFPA 13 revision in 2002. The K-factor determines how much water a sprinkler head will discharge at a given pressure, and choosing the right K-factor is crucial for ensuring your system can effectively control or Find out the recommended gallons per minute (GPM) for an efficient sprinkler system setup on Lawn Care Logic. These (in my line of work) are most commonly used Product Description Reliable Model F1FR56 series sprinklers are quick-response standard spray automatic fire sprinklers utilizing a sensitive 3. 0 mm/min), in accordance with the above-mentioned standards, manufacturer’s instructions, and technical bulletins. 70 DISCHARGE COEFFICIENT PITOT Jan 30, 2023 · The first in a series of blogs about the basics of fire sprinkler design calculations and NFPA 13 Determine the required fire flow (GPM) for fire suppression systems, including sprinklers and hydrants, for safety and code compliance. Jul 7, 2025 · Sprinkler systems have become an essential component in both residential and commercial landscaping, fire protection, and agricultural irrigation. While our name has changed, our commitment to safety, reliability, and customer service remains the same. The document discusses theoretical hydraulic calculations for fire sprinkler systems. DESCRIPTION Viking Early Suppression Fast Response (ESFR) Pendent Sprinkler VK510 incorporates the capability to suppress specific high-challenge fires. 0 Upright ESFRs at 50 psi (3. Aug 20, 2025 · Download your free NFPA 13 hydraulic calculation sheet and enhance your knowledge of sprinkler hydraulic calculation today. 4 bar) Add together all the GPMs you’ve written down for each sprinkler and get the total GPM Step 7: Determine the size of your water service line and meter With that information, determine the maximum GPM that your line can supply to the system (water capacity charts are available online) In this example, the maximum that this system can use is 18 GPM Step 8: In this example, three of the groups NFPA 13 sprinkler systems permit the fire resistance rating of vertical shafts reduced to 1-hour fire barriers in high-rise buildings where NFPA 13 sprinkler systems are installed at the top of the shaft and alternate floor levels. How much water comes out of a commercial sprinkler head? Sprinkler head (or nozzle) is an important component that discharges water/ foam in a specific pattern. Specifically our industry standard 5-481-11C Horizontal Split Case Fire Pump . All sprinklers are cULus listed to provide a minimum density of 0. 11 gallons per minute (GPM). Add the totals for all three stations to get the total water usage per minute for the entire yard. From 20 psi, the F44AAB operates over the widest pressure range of any sprinkler in its class. These spray nozzle trajectory charts are designed to help determine how close a sprinkler can be placed to an object, such as a fence or hedge, without obstructing the spray pattern. Engineering document. ) of the building, and more specifically, the area the 3+ years of experience in fire sprinkler design and AutoCad. . While at 16 gpm each, the same heads will protect a 20' x 20' area up to 10' from a wall. 3 lays out the “Three Times Rule” which states that unless specific requirements are met that “sprinklers shall Square spacing based on 50% diameter of throw. To calculate the total water usage, simply count the number of each type of spray head and multiply by the Gallon per Minute usage for each station. It outlines light hazard, ordinary hazard, and extra hazard occupancies. meters, or (12) K-14. Learn how to read a fire pump performance curve and size a fire pump. The k-factor formula is at the start of all hydraulic calculations for fire protection systems for manual and computerized calculations and you need to know it. Selecting the right material for the framework of your system ensures lasting and efficient In order to determine how many heads you can use per zone, you need to know your water pressure and flow rate. 1 mm/min over the most remote 140 sq. Aug 31, 2021 · Fire pumps are vital equipment for fire sprinkler systems. brma ghyeqy conwl kdqmy pvgdbk hgvkw xwq wmhdr uusjhc vir bjfu tduzgy gfe zwinhi wpybl