{"product_id":"contracor-venturi-sandstrahlduse-rtc-wolframkarbid-lang-dusenbohrung-6-5-bis-12-5-mm","title":"RTC Venturi blast nozzle, tungsten carbide (TC), long, 50 mm coarse thread, nozzle bore 6.5–12.5 mm","description":"\u003cstyle\u003e.blast-product h5{font-size:18px;line-height:1.3;margin:0 0 12px}.blast-product hr{margin:16px 0}.blast-product table{width:100%;border-collapse:separate;border-spacing:0}.blast-product th,.blast-product td{padding:10px;text-align:center}.blast-product th{background:#f3f3f3;border-bottom:1px solid #d9d9d9}\u003c\/style\u003e\u003cdiv class=\"blast-product\"\u003e\u003ch5\u003eContracor RTC – long tungsten carbide Venturi blast nozzle with rubber jacket\u003c\/h5\u003e\u003cp\u003eThe \u003cstrong\u003eContracor RTC\u003c\/strong\u003e is a long Venturi blast nozzle for professional pressure blasting. Its robust tungsten carbide nozzle insert combines high toughness with good wear resistance. The rubber jacket protects the nozzle in demanding daily use and provides a secure grip.\u003c\/p\u003e\u003cp\u003eWith a \u003cstrong\u003e32 mm inlet\u003c\/strong\u003e, \u003cstrong\u003e50 mm coarse thread\u003c\/strong\u003e and five bore sizes from 6.5 to 12.5 mm, the RTC covers a broad range of professional blasting applications.\u003c\/p\u003e\u003chr\u003e\u003ch5\u003eBenefits\u003c\/h5\u003e\u003cp\u003e✅ Long Venturi geometry for productive surface blasting\u003cbr\u003e✅ Robust tungsten carbide nozzle insert\u003cbr\u003e✅ Rubber jacket for protection and secure handling\u003cbr\u003e✅ 32 mm inlet\u003cbr\u003e✅ 50 mm coarse thread\u003cbr\u003e✅ Five nozzle bore sizes from 6.5 to 12.5 mm\u003cbr\u003e✅ Suitable for mobile and stationary pressure blasting systems\u003c\/p\u003e\u003chr\u003e\u003ch5\u003eTechnical Specifications\u003c\/h5\u003e\u003cdiv style=\"overflow-x:auto;border:1px solid #d9d9d9;border-radius:10px\"\u003e\u003ctable style=\"min-width:680px\"\u003e\u003cthead\u003e\u003ctr\u003e\u003cth\u003eFeature\u003c\/th\u003e\u003cth\u003eValue\u003c\/th\u003e\u003c\/tr\u003e\u003c\/thead\u003e\u003ctbody\u003e\u003ctr\u003e\u003ctd\u003eManufacturer\u003c\/td\u003e\u003ctd\u003eContracor\u003c\/td\u003e\u003c\/tr\u003e\u003ctr style=\"background:#fafafa\"\u003e\u003ctd\u003eSeries\u003c\/td\u003e\u003ctd\u003eRTC\u003c\/td\u003e\u003c\/tr\u003e\u003ctr\u003e\u003ctd\u003eDesign\u003c\/td\u003e\u003ctd\u003eLong Venturi blast nozzle\u003c\/td\u003e\u003c\/tr\u003e\u003ctr style=\"background:#fafafa\"\u003e\u003ctd\u003eNozzle insert\u003c\/td\u003e\u003ctd\u003eTungsten carbide\u003c\/td\u003e\u003c\/tr\u003e\u003ctr\u003e\u003ctd\u003eJacket\u003c\/td\u003e\u003ctd\u003eRubber\u003c\/td\u003e\u003c\/tr\u003e\u003ctr style=\"background:#fafafa\"\u003e\u003ctd\u003eInlet\u003c\/td\u003e\u003ctd\u003e32 mm\u003c\/td\u003e\u003c\/tr\u003e\u003ctr\u003e\u003ctd\u003eConnection\u003c\/td\u003e\u003ctd\u003e50 mm coarse thread\u003c\/td\u003e\u003c\/tr\u003e\u003c\/tbody\u003e\u003c\/table\u003e\u003c\/div\u003e\u003chr\u003e\u003ch5\u003eVariants\u003c\/h5\u003e\u003cdiv style=\"overflow-x:auto;border:1px solid #d9d9d9;border-radius:10px\"\u003e\u003ctable style=\"min-width:720px\"\u003e\u003cthead\u003e\u003ctr\u003e\u003cth\u003eVariant\u003c\/th\u003e\u003cth\u003eNozzle bore\u003c\/th\u003e\u003cth\u003eLength\u003c\/th\u003e\u003cth\u003eSKU\u003c\/th\u003e\u003c\/tr\u003e\u003c\/thead\u003e\u003ctbody\u003e\u003ctr\u003e\u003ctd\u003e6.5 × 130 mm\u003c\/td\u003e\u003ctd\u003e6.5 mm\u003c\/td\u003e\u003ctd\u003e130 mm\u003c\/td\u003e\u003ctd\u003e10112062\u003c\/td\u003e\u003c\/tr\u003e\u003ctr style=\"background:#fafafa\"\u003e\u003ctd\u003e8 × 150 mm\u003c\/td\u003e\u003ctd\u003e8 mm\u003c\/td\u003e\u003ctd\u003e150 mm\u003c\/td\u003e\u003ctd\u003e10112063\u003c\/td\u003e\u003c\/tr\u003e\u003ctr\u003e\u003ctd\u003e9.5 × 170 mm\u003c\/td\u003e\u003ctd\u003e9.5 mm\u003c\/td\u003e\u003ctd\u003e170 mm\u003c\/td\u003e\u003ctd\u003e10112064\u003c\/td\u003e\u003c\/tr\u003e\u003ctr style=\"background:#fafafa\"\u003e\u003ctd\u003e11 × 200 mm\u003c\/td\u003e\u003ctd\u003e11 mm\u003c\/td\u003e\u003ctd\u003e200 mm\u003c\/td\u003e\u003ctd\u003e10112065\u003c\/td\u003e\u003c\/tr\u003e\u003ctr\u003e\u003ctd\u003e12.5 × 210 mm\u003c\/td\u003e\u003ctd\u003e12.5 mm\u003c\/td\u003e\u003ctd\u003e210 mm\u003c\/td\u003e\u003ctd\u003e10112066\u003c\/td\u003e\u003c\/tr\u003e\u003c\/tbody\u003e\u003c\/table\u003e\u003c\/div\u003e\u003chr\u003e\u003ch5\u003eCalculate compressed-air requirements, abrasive consumption and compressor capacity\u003c\/h5\u003e\u003cp\u003eAll RTC bore sizes are included in the calculator. Effective free air delivery at working pressure is decisive for compressor selection. A 30 or 50% capacity reserve accounts for nozzle wear and typical pressure losses.\u003c\/p\u003e\u003cdiv id=\"blast-nozzle-calculator\" style=\"width:100%;max-width:100%;font-family:system-ui,-apple-system,Segoe UI,Roboto,Arial\"\u003e\u003cstyle\u003e#blast-nozzle-calculator *{box-sizing:border-box}#blast-nozzle-calculator .calc-grid{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr) minmax(0,1fr) auto;gap:12px;align-items:end}#blast-nozzle-calculator select{width:100%;height:40px;padding:0 10px;border:1px solid #ccc;border-radius:8px;background:#fff;margin-top:6px}#blast-nozzle-calculator .calc-actions{display:flex;gap:10px}#blast-nozzle-calculator button{height:40px;padding:0 14px;border-radius:10px}@media(max-width:1280px){#blast-nozzle-calculator .calc-grid{grid-template-columns:1fr}#blast-nozzle-calculator .calc-actions{display:grid}#blast-nozzle-calculator button{width:100%}}\u003c\/style\u003e\u003cdiv style=\"background:#f5f5f7;border-radius:10px;padding:12px 14px;font-size:14px;margin-bottom:12px\"\u003e\u003cp style=\"margin:0 0 6px\"\u003eSelect nozzle bore, working pressure and desired capacity reserve.\u003c\/p\u003e\u003cp style=\"margin:0\"\u003e\u003cstrong\u003e💡 Capacity reserve:\u003c\/strong\u003e Accounts for increased air demand due to nozzle wear and typical pressure losses; abrasive consumption remains unaffected.\u003c\/p\u003e\u003c\/div\u003e\u003cdiv class=\"calc-grid\"\u003e\u003clabel\u003eNozzle bore\u003cselect id=\"bn-diameter\"\u003e\u003coption value=\"\" selected disabled\u003ePlease select\u003c\/option\u003e\u003coption value=\"3.5\"\u003e3.5 mm\u003c\/option\u003e\u003coption value=\"5\"\u003e5 mm\u003c\/option\u003e\u003coption value=\"6.5\"\u003e6.5 mm\u003c\/option\u003e\u003coption value=\"8\"\u003e8 mm\u003c\/option\u003e\u003coption value=\"9.5\"\u003e9.5 mm\u003c\/option\u003e\u003coption value=\"11\"\u003e11 mm\u003c\/option\u003e\u003coption value=\"12.5\"\u003e12.5 mm\u003c\/option\u003e\u003coption value=\"16\"\u003e16 mm\u003c\/option\u003e\u003coption value=\"19\"\u003e19 mm\u003c\/option\u003e\u003c\/select\u003e\u003c\/label\u003e\u003clabel\u003eWorking pressure at the nozzle\u003cselect id=\"bn-pressure\"\u003e\u003coption value=\"\" selected disabled\u003ePlease select\u003c\/option\u003e\u003coption value=\"1\"\u003e1 bar\u003c\/option\u003e\u003coption value=\"2\"\u003e2 bar\u003c\/option\u003e\u003coption value=\"3\"\u003e3 bar\u003c\/option\u003e\u003coption value=\"4\"\u003e4 bar\u003c\/option\u003e\u003coption value=\"5\"\u003e5 bar\u003c\/option\u003e\u003coption value=\"6\"\u003e6 bar\u003c\/option\u003e\u003coption value=\"7\"\u003e7 bar\u003c\/option\u003e\u003coption value=\"8\"\u003e8 bar\u003c\/option\u003e\u003coption value=\"9\"\u003e9 bar\u003c\/option\u003e\u003coption value=\"10\"\u003e10 bar\u003c\/option\u003e\u003c\/select\u003e\u003c\/label\u003e\u003clabel\u003eCapacity reserve\u003cselect id=\"bn-reserve\"\u003e\u003coption value=\"\" selected disabled\u003ePlease select\u003c\/option\u003e\u003coption value=\"0\"\u003e0 %\u003c\/option\u003e\u003coption value=\"0.3\"\u003e30 %\u003c\/option\u003e\u003coption value=\"0.5\"\u003e50 %\u003c\/option\u003e\u003c\/select\u003e\u003c\/label\u003e\u003cdiv class=\"calc-actions\"\u003e\u003cbutton id=\"bn-calc\" type=\"button\"\u003eCalculate\u003c\/button\u003e\u003cbutton id=\"bn-reset\" type=\"button\"\u003eReset\u003c\/button\u003e\u003c\/div\u003e\u003c\/div\u003e\u003cdiv style=\"background:#f8f8fa;border-radius:10px;padding:12px 14px;margin-top:12px\"\u003e\u003cstrong\u003eResult:\u003c\/strong\u003e\u003cdiv id=\"bn-result-line\" style=\"margin-top:8px;line-height:1.7\"\u003e—\u003c\/div\u003e\u003c\/div\u003e\u003cp style=\"font-size:12px;color:#555\"\u003eTechnical guide values. Abrasive consumption and kW figures are approximate; effective free air delivery at working pressure is decisive for compressor selection.\u003c\/p\u003e\u003c\/div\u003e\u003cscript\u003e(function(){var a={\"3.5\":[.1,.2,.3,.35,.4,.5,.6,.65,.7,.8],\"5\":[.25,.5,.65,.8,.95,1.1,1.25,1.4,1.55,1.7],\"6.5\":[.4,.8,1.15,1.5,1.8,2.05,2.3,2.55,2.8,3.05],\"8\":[.65,1.3,1.9,2.45,2.95,3.4,3.9,4.35,4.85,5.3],\"9.5\":[.95,1.8,2.65,3.4,4.15,4.85,5.55,6.2,6.9,7.55],\"11\":[1.35,2.55,3.6,4.6,5.55,6.45,7.35,8.2,9.1,10],\"12.5\":[1.9,3.5,4.85,6.05,7.25,8.4,9.55,10.65,11.75,12.9],\"16\":[3.11,5.73,7.95,9.91,11.88,13.76,15.65,17.45,19.25,21.14],\"19\":[4.39,8.09,11.21,13.98,16.75,19.41,22.06,24.61,27.15,29.8]};function f(n,d){return n.toLocaleString('en-GB',{minimumFractionDigits:d,maximumFractionDigits:d})}document.getElementById('bn-calc').onclick=function(){var d=document.getElementById('bn-diameter').value,p=document.getElementById('bn-pressure').value,r=document.getElementById('bn-reserve').value,o=document.getElementById('bn-result-line');if(!d||!p||r===''){o.innerHTML='\u003cstrong\u003ePlease select nozzle bore, working pressure and capacity reserve.\u003c\/strong\u003e';return}var b=a[d][+p-1],q=b*(1+ +r);o.innerHTML='\u003cstrong\u003eCompressed-air requirement of the nozzle:\u003c\/strong\u003e '+f(b,2)+' m³\/min\u003cbr\u003e\u003cstrong\u003eRecommended compressor free air delivery incl. reserve:\u003c\/strong\u003e '+f(q,2)+' m³\/min\u003cbr\u003e\u003cstrong\u003eApproximate abrasive consumption:\u003c\/strong\u003e approx. '+f(b*96,0)+' kg\/h\u003cbr\u003e\u003cstrong\u003eIndicative compressor motor power:\u003c\/strong\u003e approx. '+f(q*6,0)+' kW'};document.getElementById('bn-reset').onclick=function(){document.getElementById('bn-diameter').selectedIndex=0;document.getElementById('bn-pressure').selectedIndex=0;document.getElementById('bn-reserve').selectedIndex=0;document.getElementById('bn-result-line').innerHTML='—'}})();\u003c\/script\u003e\u003chr\u003e\u003ch5\u003eApplications\u003c\/h5\u003e\u003cp\u003e✔ Rust and coating removal\u003cbr\u003e✔ Steel and plant engineering\u003cbr\u003e✔ Surface preparation\u003cbr\u003e✔ Industrial maintenance\u003cbr\u003e✔ Mobile construction-site work\u003c\/p\u003e\u003chr\u003e\u003ch5\u003eWear, Inspection and Operation\u003c\/h5\u003e\u003cp\u003eEven tungsten carbide nozzles wear. Check the bore regularly; increasing bore diameter raises air demand and can alter the blast pattern. Inspect the rubber jacket, thread and nozzle holder regularly.\u003c\/p\u003e\u003chr\u003e\u003ch5\u003eFAQ\u003c\/h5\u003e\u003cp\u003e\u003cstrong\u003eWhich bore sizes are available?\u003c\/strong\u003e\u003cbr\u003e6.5, 8, 9.5, 11 and 12.5 mm.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhich connection is used?\u003c\/strong\u003e\u003cbr\u003e50 mm coarse thread with a 32 mm inlet.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhy include compressor capacity reserve?\u003c\/strong\u003e\u003cbr\u003eIt accounts for nozzle wear and pressure losses and helps maintain stable working pressure.\u003c\/p\u003e\u003chr\u003e\u003ch5\u003eConclusion\u003c\/h5\u003e\u003cp\u003eThe \u003cstrong\u003eContracor RTC\u003c\/strong\u003e is a robust tungsten carbide long-Venturi blast nozzle with a practical rubber jacket for professional pressure blasting.\u003c\/p\u003e\u003c\/div\u003e","brand":"Contracor","offers":[{"title":"6.5 x 130","offer_id":49019442069851,"sku":"10112062","price":85.68,"currency_code":"EUR","in_stock":true},{"title":"8 x 150","offer_id":49019442102619,"sku":"10112063","price":86.75,"currency_code":"EUR","in_stock":true},{"title":"9.5 x 170","offer_id":49019442135387,"sku":"10112064","price":89.96,"currency_code":"EUR","in_stock":true},{"title":"11 x 200","offer_id":49019442168155,"sku":"10112065","price":110.31,"currency_code":"EUR","in_stock":true},{"title":"12.5 x 210","offer_id":49019442200923,"sku":"10112066","price":161.72,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0876\/8526\/7803\/files\/venturi-sandstrahlduese-wolframkarbid-rtc-lang-contracor.jpg?v=1726394479","url":"https:\/\/strahltechnik-express.de\/en-lv\/products\/contracor-venturi-sandstrahlduse-rtc-wolframkarbid-lang-dusenbohrung-6-5-bis-12-5-mm","provider":"ABS Strahltechnik","version":"1.0","type":"link"}