What is a good psi for an air compressor? When measuring lengths of runs, add 5' of length for each pipe fitting. For example, 14.2 PSIA (0 PSIA), 63 degrees Fahrenheit at 34 percent relative humidity. For example, a 25 HP compressor will produce at least 100 SCFM of air. Now you can calculate the CFM of your air compressor. Model # 2540A5A52PS UNSPSC # 41112501 You will find the calculator (with calculated chart) below the explanation of SCFM vs CFM metrics. SCFM is the volumetric flow rate against a standard, whereas there's no standard for CFM. It is not uncommon to see this more like 3 CFM per HP. PSI to SCFM Calculator. Orange Coast Pneumatics, Inc., 3810 Prospect Ave., Unit A. Yorba Linda, CA 92886, Phone number : 714-312-5531, Business contact hours: 9 am - 5 pm, sales@ocaire.com This is shown in the far left column on the same line as 25 HP. Load More. Ie, if you charge to 120 psi, and pull the electrical plug if you get 8 CFM at 120 PSI, you will get 4 CFM at 60 PSI. This compressor is . Conclusion. Here is the complete SCFM to CFM formula we derive further on: CFM = SCFM (14.7 psi Pactual ) (Tactual + 459.67) (68F+459.67) Example of SCFM to CFM calculator use: 500 SCFM at 60F temperature and 16 psi pressure is equal to 452.41 CFM. The relationship between CFM and PSI is just linear. These terms are not equivalent to each other but both are shown the compressor performance. As shown it is simply the ratio of gauge pressure + atmospheric divided by the published pressure + atmospheric and then multiply the dividend by the published volume. This compressor is . Figures in the body of the chart above are pipe sizes recommended on a 100 PSI system to carry air with less than 1 PSI loss. Slpm [ Std pressure 1 bar (100 kPa), and Std temperature 20 deg C] Scfm [Std pressure atm (14.7 psia), Std Temperature 68 deg F] The correction factor is 0.972. Now lets consider the volume at a lower than published pressure. Find it at Grainger.com. Looking for Meter, Air, 10-100 Scfm? Added to Cart. Flow of water through 100 foot lengths of hose, Straight-Smooth Bore - U.S. Gallons per minute . Pressure 100 psi Flow Range 0.5 to 5 scfm Max. PSI at Hose Inlet Nominal Hose I.D. Recommended air pipe line sizes with schedule 40 steel pipes and air pressure 100 psi (6.9 bar, 689500 Pa): Gases and Compressed Air - Air, LNG, LPG and other common gas properties, pipeline capacities, sizing of relief valves. A constantly spinning sander might have a CFM requirement of 8, (8 CFM @ 90 PSI for example), while a nail gun, which requires single bursts of air might have a lower CFM rating of 2.8. Because it is the nontangible term. Air Delivery SCFM @ 90PSI: 7.3: 19.4: 13.1: 13.1: Maximum Pressure (psi) 125 psi: 170 psi: 150 psi: 150 psi: Compressor Type: Framing & Roofing: Framing & Roofing: Framing & Roofing: . Pressure is maintained under 90 PSI to calculate CFM values. So as we do the math we solve for 17.69 SCFM @ 105 PSIG from a device that was shown consume 14 SCFM @ 80 PSIG. You will find the calculator (with calculated chart) below the explanation of SCFM vs CFM . So SCFM is the flow rate of the compressor under certain ideal pressure and temperature conditions, whereas CFM . ACFM=SCFM* (460+Temperature (F))/530* 14.7/ (14.7+psig) If you read the gas flow at 100 SCFM at a temperature of 90 degrees F and a pressure of 40 psi, your ACFM flow is: The difference between ACFM and SCFM for this scenario is significant, so be thoughtful when checking your rotameter. SCFM is calculated at a lower pressure which makes the air volume larger, and so, SCFM is always a bigger number than CFM. Air is expanded to a standard condition of 14.7 PSI to calculate SCFM. CFM = SCFM (14.7 psi Pactual ) (Tactual + 459.67) (68F+459.67) Example of SCFM to CFM calculator use: 500 SCFM at 60F temperature and 16 psi pressure is equal to 452.41 CFM. But a higher max psi does have one real benefit: It . 10 SCFM (2) 12 SCFM (9) 13 SCFM (5) 14 SCFM (12) 15 SCFM (4) Media. More Information. Scfm [Std pressure atm (14.7 psia), Std Temperature 60 deg F] The correction factor is 1.043 . over 800 SCFM at 60 PSIG inlet and 3 PSI (5%) pressure drop. So SCFM is the flow rate of the compressor under certain ideal pressure and temperature conditions, whereas CFM . 90 psi . PSI means pound-force per square inch and SCFM means standard cubic feet per minute. Gas Material Brass/Bronze Cubic Feet per Minute 1759.00 Capacity 1759 SCFM. The real . Standard cubic feet per minute measures the flow rate of gas under standard pressure and temperature conditions. On steady pumping, a compressor will produce a minimum of 4 SCFM air flow for each 1 HP of capacity. To use this chart, you will need to know the PSI (Pounds per Square Inch) and CFM that a particular air tool operates and then look to see if your air compressor can power it. It describes the rate of flow of a gas or air volume into or out of a space. BROOKS Mechanical Flowmeter: 1 in Connection Size, FNPT, Air, 100 psi Max. Since things like atmospheric pressure, humidity, and ambient temperature can all affect a compressor's flow, SCFM is measured using standard or ideal conditions, which are: 14.7 psia, 68 degrees Fahrenheit, and 36 percent humidity. Separate the Tank from the compressor (ie, the compressor is off). A two-stage compressor is more efficient, typically by 15 percent, versus a single-stage compressor. 2. Some air compressors are rated with 2 different SCFM ratings i.e. On steady pumping, a compressor will produce a minimum of 4 SCFM air flow for each 1 HP of capacity. . 10 MPa x 10 = 100 bar 10 MPa x 145.0 = 1450 PSI: PSI (pounds / square inch) PSI PSI: atm bar MPa: 0.068 0.0689 0.00689: 100 PSI x 0.068 = 6.80 atm 100 PSI x 0.0689 = 6.89 bar 100 PSI x 0.00689 = 0.689 MPa: kp/cm 2 (kilopound / cm 2) kp/cm 2 kp/cm 2: bar MPa PSI: 0.981 0.0981 14.223: 10 kp/cm 2 x 0.981 = 9.81 bar 10 kp/cm 2 x 0.0981 = 0.981 MPa . CFM is relevant to the internal capacity of an air compressor. (SCFM) Through ANSI Standard Weight Schedule 40 Metal Pipe Water Discharge Table Feet of Water Inches of . Multiply the result while converting from Slpm to Scfm and devide the result while . Air pipe lines capacities at pressure 100 psi (6.9 bar). Now you can calculate the CFM of your air compressor. Add To Basket. The higher the number, the more air is being forced through the system. MSC Industrial supply is here to support all your metalworking and maintenance repair needs with over 1 million products in stock and ready to ship today! Menu Navigation Menu New In that sense, the pounds per square inch (psi) isn't much of an issue. With over 1.6M products and 24/7 customer service we have supplies and solutions for every industry. Flowmeter Product Group Mechanical Flowmeter For Pipe Size 1/8 in to 1 in Connection Size 1/4 in Connection Type FNPT Fluid Temp. If a compressed air TANK has a regulator attached to it which is set to 90 PSI and the air in the tank is always kept between 90-130 PSI - let's say that the CONTINUOUS CFM out of the regulator is equal to "x" If you then adjust the air pressure regulator to 45 PSI and the air in the tank is once again always kept between 90-130 PSI At 90 PSIG that same cubic foot takes up a lot less space than it did at atmospheric pressure so 1 CFM @ 90 psi contains 7 SCF (standard cubic feet) In real life, CFMis the useful output rate and it is a measure of exactly how many cubic feet leave the compressor at the rated pressure in a minute. ACFM=SCFM* (460+Temperature (F))/530* 14.7/ (14.7+psig) If you read the gas flow at 100 SCFM at a temperature of 90 degrees F and a pressure of 40 psi, your ACFM flow is: 100* (460+90)/530* 14.7/ (14.7+40)=27.9 ACFM The difference between ACFM and SCFM for this scenario is significant, so be thoughtful when checking your rotameter. The accepted standard values for temperature and pressure are 68 degrees Fahrenheit and 36 percent humidity at sea level. Pressure, 10 to 100 scfm - 4UN08|2540A5A52PS - Grainger Looking for Meter, Air, 10-100 Scfm? Air is expanded to a standard condition of 14.7 PSI to calculate SCFM. 5 HP Electric 220-Volt Wheelbarrow has a High flow 3 piston cast iron "V" style pumps that generated 18.5 CFM at 100 PSI and max 170 PSI. The majority of air tools operate in the 90 to 100 psi range and most air compressors from the smallest to the largest can easily produce this much pressure. . 100 psi: Port size: 1/8" PTF: Drain type: Auto drain: Filter element: 5.00 m: Product Datasheet (PDF) $70.72. If your air supply has a pressure of 100 psi, then 100 psi - 14.7 psi equals 85.3 psi. A good single-stage compressor, per true HP input, will deliver about 4 true CFM at 100 psig. 2 Mnpt X 2 Fnpt . PSI and SCFM are not converted to each other. Carbon dioxide (1) Compressed air (33) Compressed air, carbon dioxide, inert gases (2) Neutral gases (5) Water (10) . (The intersection of the 60 PSIG primary pressure line and the 2-1/2" pipe size line). Air Delivery SCFM @ 90PSI: 7.3: 19.4: 13.1: 13.1: Maximum Pressure (psi) 125 psi: 170 psi: 150 psi: 150 psi: Compressor Type: Framing & Roofing: Framing & Roofing: Framing & Roofing: . A standard measurement of airflow that indicates how many cubic feet of air pass by a stationary point in one minute. 3.1 SCFM at 90 psi. Air compressors are typically rated with an SCFM at a specific pressure. Conclusion. Further uses of the curves would be to compare the size pipe required at the other sets of pressure drops for 100 feet of pipe length. SCFM is calculated at a lower pressure which makes the air volume larger, and so, SCFM is always a bigger number than CFM. 5 HP Electric 220-Volt Wheelbarrow has a High flow 3 piston cast iron "V" style pumps that generated 18.5 CFM at 100 PSI and max 170 PSI. For example, a 25 HP compressor will produce at least 100 SCFM of air as shown in the far left column on the same line as 25 HP. Since things like atmospheric pressure, humidity, and ambient temperature can all affect a compressor's flow, SCFM is measured using standard or ideal conditions, which are: 14.7 psia, 68 degrees Fahrenheit, and 36 percent humidity. Definition: Cubic foot/minute Cubic feet per minute (CFM) is a measure used in Industrial hygiene and ventilation engineering. Pressure varies inversely with SCFM, so if your PSI is 120, your SCFM will be lower than if your PSI is 80. Viscosity 79.8 SUS Flow Material Air Type Variable Area Width 1 1/8 in With over 1.6M products and 24/7 customer service we have supplies and solutions for every industry. ==> 0.48 / 0.0177 = 27 SCFM To convert SCFM into CV, simply reverse the process and multiply Pressure is maintained under 90 PSI to calculate CFM values. SCFM, by the way, stands for Standard Cubic Feet per Minute. PSI and SCFM are not converted to each other. This is a conservative figure, as most compressors will produce 5 or 6 SCFM. To convert SCFM to actual flow (ACFM) at any other pressure, temperature or relative humidity conditions, the formula used is: P s = Standard pressure (PSIA) P b = Atmospheric pressure - barometer (PSIA) P a = Actual pressure (PSIA) RH s = Standard relative humidity RH a = Actual relative humidity PV s = Saturated vapor pressure of water at standard temperature (PSI)* Range 40 Degrees to 150 Degrees F Wetted Materials Brass, Buna, Clear Acrylic, Stainless Steel Max. Using Chart A shows that if a Mechanical Flowmeter: 1 in Connection Size, FNPT, Air, 100 psi Max. This is a conservative figure, as most compressors will produce 5 or 6 SCFM. If you know your pressure and just want CFM, you don't care about the tank size. Find it at Grainger.com. As shown in the formula and calculations it is simply the ratio of gauge pressure + atmospheric divided by the published pressure + atmospheric and then multiply the dividend by the published volume. You might see 4 to 5 CFM per HP at 100 psi, instead of 3 or 4 CFM. 1 CFM equals approximately 0.47 liter per second. These terms are not equivalent to each other but both are shown the compressor performance. PSI means pound-force per square inch and SCFM means standard cubic feet per minute. So when a compressor specification says 3.8 SCFM at 90p psi, this means that the air compressor PUMP has the ability to deliver 3.8 scfSCFMm at a regulated pressure of 90 psi. CFM is relevant to the internal capacity of an air compressor. Menu. So as we do the math we solve for 11.04 SCFM @ 60 PSIG from a device that was shown to consume 14 SCFM @ 80 PSIG. How to Calculate SCFM and CFM SCFM is calculated by a method that expands the air to accommodate the intervening factors of humidity, pressure and actual temperature. PSI to SCFM Calculator. CFM is Cubic Feet per Minute, while SCFM is Standard Cubic Feet per Minute. Cv to scfm Conversion Factor Table psi of Air Pressure 40 50 60 70 80 90 100 Factor 0.0370 0.0312 0.0270 0.0238 0.0212 0.0192 0.0177 Example: What is the output in scfm of a value with a Cv of 0.48 when operated at 100 psi? Because it is the nontangible term. The volumetric flow rate of a liquid or gas in cubic feet per minute. The most common air compressor ratings are cfm and scfm (standard cfm). Diameters - Inches 20 30 40 50 60 75 100 125 150 200 26 32 38 43 47 53 62 70 77 90 47 58 68 77 85 95 . SCFM to CFM Calculator SCFM Standard Cubic Feet per Minute Actual Temperature Enter actual inlet temperature entering the blower in degrees Fahrenheit Actual Pressure Enter actual inlet pressure in PSIA, include any inlet losses you anticipate Barometric Pressure Enter site Barometric pressure in PSIA, this will be dependent on elevation SCFM is calculated at a lower pressure which makes the air volume larger, and so, SCFM is always a bigger number than CFM. If carrying 120 PSI pressure these sizes will carry slightly more air than shown, or pressure loss will be slightly less than 1 PSI. In Stock. A standard measurement of airflow that indicates how many cubic feet of air pass by a stationary point in one minute. Pro Tip: To find out the minimum CFM, multiply your tool's required CFM by 1- (CFM X 1.5). PSI of Air Pressure: 40 50 60 70 80 90 100 Factor: .0370 .0312 .0270 .0238 .0212 .0192 .0177 Example:What is the output in SCFM of a value with a CV of 0.48 when operated at 100 PSI? Pressure, 10 to 100 scfm Item # 4UN08; Mfr. Shop a large range of metal 100 psi x valve at MSC Industrial Supply. 1 1 1 1 1 . 0.48 (Cv) = 27 scfm 0.0177 (Factor) AIR CONTROL VALVE Cv It is sometimes helpful to convert Cv into scfm (standard cubic feet