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1,{value:"oil",label:"Oil (hydraulic / lube)"},{value:"gas",label:"Compressed Gas / Air"},{value:"steam",label:"Steam (distribution)"},{value:"slurry",label:"Slurry / Mine Process"},{value:"sewage",label:"Sewage / Wastewater"},{value:"chemical",label:"Chemical / Process Fluid"}],A={calcMode:"velocity-from-flow",unit:"metric",fluidType:"water",nominalSize:'4"  (DN100)',schedule:"Sch 40",flowRate:"50",velocity:"1.5",customID:"100"},C=[{question:"What is the recommended fluid velocity in water pipes?",answer:"Recommended water velocity in pipes: Cold water \xe2€” 0.6 to 3.0 m/s. Hot water systems \xe2€” 0.6 to 2.0 m/s to limit thermal noise. Suction lines \xe2€” maximum 1.0 m/s to avoid cavitation. Pump discharge lines \xe2€” 1.5 to 3.0 m/s. Mains and distribution \xe2€” 1.0 to 2.0 m/s. Higher velocities cause excessive pressure drop and pipe erosion. Lower velocities in slurry systems allow settling."},{question:"How do I calculate pipe flow velocity?",answer:"Velocity (m/s) = Flow rate (m\xc2\xb3/s) / Cross-sectional area (m\xc2\xb2). For a circular pipe: Area = \xcf€ \xc3— d\xc2\xb2 / 4, where d is the internal diameter in metres. Example: 50 m\xc2\xb3/h through DN100 Sch 40 (ID \xe2‰ˆ 102.3 mm): v = (50/3600) / (\xcf€ \xc3— 0.1023\xc2\xb2 / 4) = 0.01389 / 0.008221 \xe2‰ˆ 1.69 m/s."},{question:"What is the Reynolds number for pipe flow?",answer:"Reynolds number Re = \xcf\x81 \xc3— v \xc3— d / \xc2\xb5, where \xcf\x81 = fluid density (kg/m\xc2\xb3), v = velocity (m/s), d = internal diameter (m), \xc2\xb5 = dynamic viscosity (Pa\xc2\xb7s). Re < 2300: laminar flow. 2300 < Re < 4000: transitional. Re > 4000: turbulent. Most industrial pipe flows are turbulent (Re typically 10,000\xe2€“500,000)."},{question:"What is the minimum slurry velocity to prevent settling?",answer:"Minimum slurry velocity to prevent settling (Deposition Limit Velocity) depen

1ds on particle size, concentration and specific gravity. Rule of thumb: 1.5\xe2€“2.0 m/s for fine slurries (<150 \xc2\xb5m), 2.0\xe2€“3.5 m/s for coarser slurries. Durand equation provides more accurate estimates. Always design above 1.5 m/s for mine and mineral slurry pipelines. SANS 10141 provides guidance for South African water retaining structures."},{question:"What internal diameter does ANSI Sch 40 pipe have?",answer:'Common Sch 40 internal diameters: 1" \xe2†’ 26.6 mm, 2" \xe2†’ 52.5 mm, 3" \xe2†’ 77.9 mm, 4" \xe2†’ 102.3 mm, 6" \xe2†’ 154.1 mm, 8" \xe2†’ 202.7 mm, 10" \xe2†’ 254.5 mm, 12" \xe2†’ 304.8 mm. Internal diameter = OD \xe2ˆ’ (2 \xc3— wall thickness). Always check manufacturer datasheet for actual ID. SABS 719 and SANS 719 govern carbon steel pipe in South Africa.'},{question:"How does steam velocity affect steam distribution systems?",answer:"Recommended steam velocity in distribution piping: Low pressure (<1 bar g): 20\xe2€“35 m/s. Medium pressure (1\xe2€“7 bar g): 25\xe2€“40 m/s. High pressure (>7 bar g): 40\xe2€“60 m/s. Excessive steam velocity causes noise, erosion and poor steam quality (water hammer from entrained condensate). Steam velocity should be reduced before metering equipment."},{question:"What causes water hammer in pipes?",answer:"Water hammer occurs when fluid flow is suddenly stopped (valve closure, pump trip) causing a pressure surge (Joukowsky equation: \xce”P = \xcf\x81 \xc3— c \xc3— \xce”v, where c is the speed of sound in the fluid \xe2‰ˆ 1200\xe2€“1400 m/s in water). Mitigation: limit valve closure time, install surge vessels, use water hammer arrestors, reduce fluid velocity. Sudden pump stoppages are the most common cause in South African municipal systems."},{question:'What flow rate can a 4" Sch 40 pipe handle?',answer:'A 4" Sch 40 pipe (ID = 102.3 mm) at 2 m/s carries approximately: Q = \xcf€ \xc3— (0.1023)\xc2\xb2 / 4 \xc3— 2 \xc3— 3600 \xe2‰ˆ 59 m\xc2\xb3/h \xe2‰ˆ 260 US gpm. At 1 m/s: \xe2‰ˆ 30 m\xc2\xb3/h. At 3 m/s: \xe2‰ˆ 89 m\xc2\xb3/h. Actual capacity depends on allowable pressure drop and pump head available.'}];function F(e){if("Custom ID"===e.schedule)return parseFloat(e.customID)||0;let t=j[e.nominalSize];if(!t)return 0;let s=t.wt[e.schedule];if(void 0===s){var l;let e=null!=(l=Object.values(t.wt)[0])?l:0;return t.od-2*e}return t.od-2*s}let D=()=>{let[e,t]=(0,a.useState)(A),[s,i]=(0,a.useState)(null),[n,d]=(0,a.useState)(null),[m,D]=(0,a.useState)(!1),M=(e,s)=>{t(t=>({...t,[e]:s})),i(null)},R="metric"===e.unit,P=S[e.fluidType];return(0,l.jsxs)(l.Fragment,{children:[(0,l.jsxs)(c(),{children:[(0,l.jsx)("title",{children:"FREE Pipe Velocity Calculator 2026 | Flow Rate to Fluid Velocity | ManufacturingEzyFind"}),(0,l.jsx)("meta",{name:"description",content:"Free pipe velocity calculator \xe2€” convert flow rate to fluid velocity in ANSI pipe schedules. Recommended velocity limits for water, oil, gas, steam, slurry. DN15 to DN600. Download Excel."}),(0,l.jsx)("meta",{name:"keywords",content:"pipe velocity calculator, fluid velocity in pipe, flow rate velocity calculator, pipe flow velocity, DN100 4 inch pipe flow, ANSI schedule pipe, South Africa"}),(0,l.jsx)("meta",{name:"robots",content:"index, follow"}),(0,l.jsx)("link",{rel:"canonical",href:"https://www.manufacturingezyfind.co.za/engineering-calculators/fluid/pipe-velocity-calculator"}),(0,l.jsx)("meta",{property:"og:title",content:"FREE Pipe Velocity Calculator 2026 | Flow Rate to Velocity in Pipe"}),(0,l.jsx)("meta",{property:"og:description",content:"Calculate fluid velocity from flow rate in ANSI pipe schedules. Velocity limits for water, steam, gas, slurry. DN15\xe2€“DN600. Free, instant results."}),(0,l.jsx)("meta",{property:"og:site_name",content:"ManufacturingEzyFind"}),(0,l.jsx)("meta",{name:"geo.region",content:"ZA"}),(0,l.jsx)("script",{type:"application/ld+json",children:JSON.stringify({"@context":"https://schema.org","@type":"WebApplication",name:"Pipe Velocity Calculator",applicationCategory:"EngineeringApplication",url:"https://www.manufacturingezyfind.co.za/engineering-calculators/fluid/pipe-velocity-calculator",offers:{"@type":"Offer",price:"0",priceCurrency:"ZAR"},publisher:{"@type":"Organization",name:"ManufacturingEzyFind"}})}),(0,l.jsx)("script",{type:"application/ld+json",children:JSON.stringify({"@context":"https://schema.org","@type":"FAQPage",mainEntity:C.map(e=>

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