{"product_id":"contracor-doppelventuri-sandstrahlduse-defender-1000-borcarbid-extralang-dusenbohrung-6-5-bis-12-5-mm","title":"Defender 1000 Double Venturi Blast Nozzle, boron carbide, extra-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 Defender 1000 – extra-long boron carbide double-Venturi blast nozzle\u003c\/h5\u003e\u003cp\u003eThe \u003cstrong\u003eContracor Defender 1000\u003c\/strong\u003e is an extra-long double-Venturi blast nozzle for professional pressure blasting with high surface coverage rates. Its double-Venturi geometry widens and stabilizes the blast pattern, making it particularly suitable for large surfaces where a wide, even blast pattern and high productivity are required.\u003c\/p\u003e\u003cp\u003eThe nozzle insert is made from highly wear-resistant \u003cstrong\u003eboron carbide (B4C)\u003c\/strong\u003e. A robust \u003cstrong\u003epolyurethane jacket\u003c\/strong\u003e protects the insert during everyday use. The nozzle has a \u003cstrong\u003e32 mm inlet\u003c\/strong\u003e and a \u003cstrong\u003e50 mm coarse thread\u003c\/strong\u003e. Under suitable conditions, Contracor specifies service life of up to approximately 1,000 operating hours; actual life depends strongly on abrasive, grit size, pressure, metering and handling.\u003c\/p\u003e\u003chr\u003e\u003ch5\u003eBenefits\u003c\/h5\u003e\u003cp\u003e✅ Extra-long double-Venturi geometry for a wide, even blast pattern\u003cbr\u003e✅ Boron carbide nozzle insert for very high wear resistance\u003cbr\u003e✅ Robust polyurethane outer jacket\u003cbr\u003e✅ 32 mm inlet for efficient flow\u003cbr\u003e✅ 50 mm coarse thread for compatible professional nozzle holders\u003cbr\u003e✅ Five nozzle bore sizes from 6.5 to 12.5 mm\u003cbr\u003e✅ Particularly suitable for large-area and intensive pressure blasting\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\u003eDefender 1000\u003c\/td\u003e\u003c\/tr\u003e\u003ctr\u003e\u003ctd\u003eDesign\u003c\/td\u003e\u003ctd\u003eExtra-long double-Venturi blast nozzle\u003c\/td\u003e\u003c\/tr\u003e\u003ctr style=\"background:#fafafa\"\u003e\u003ctd\u003eNozzle insert\u003c\/td\u003e\u003ctd\u003eBoron carbide (B4C)\u003c\/td\u003e\u003c\/tr\u003e\u003ctr\u003e\u003ctd\u003eOuter jacket\u003c\/td\u003e\u003ctd\u003ePolyurethane\u003c\/td\u003e\u003c\/tr\u003e\u003ctr style=\"background:#fafafa\"\u003e\u003ctd\u003eInlet diameter\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\u003ctr style=\"background:#fafafa\"\u003e\u003ctd\u003eNozzle bores\u003c\/td\u003e\u003ctd\u003e6.5–12.5 mm\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 × 192 mm\u003c\/td\u003e\u003ctd\u003e6.5 mm\u003c\/td\u003e\u003ctd\u003e192 mm\u003c\/td\u003e\u003ctd\u003e10113022\u003c\/td\u003e\u003c\/tr\u003e\u003ctr style=\"background:#fafafa\"\u003e\u003ctd\u003e8 × 209 mm\u003c\/td\u003e\u003ctd\u003e8 mm\u003c\/td\u003e\u003ctd\u003e209 mm\u003c\/td\u003e\u003ctd\u003e10113023\u003c\/td\u003e\u003c\/tr\u003e\u003ctr\u003e\u003ctd\u003e9.5 × 240 mm\u003c\/td\u003e\u003ctd\u003e9.5 mm\u003c\/td\u003e\u003ctd\u003e240 mm\u003c\/td\u003e\u003ctd\u003e10113024\u003c\/td\u003e\u003c\/tr\u003e\u003ctr style=\"background:#fafafa\"\u003e\u003ctd\u003e11 × 279 mm\u003c\/td\u003e\u003ctd\u003e11 mm\u003c\/td\u003e\u003ctd\u003e279 mm\u003c\/td\u003e\u003ctd\u003e10113025\u003c\/td\u003e\u003c\/tr\u003e\u003ctr\u003e\u003ctd\u003e12.5 × 309 mm\u003c\/td\u003e\u003ctd\u003e12.5 mm\u003c\/td\u003e\u003ctd\u003e309 mm\u003c\/td\u003e\u003ctd\u003e10113026\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\u003cdiv id=\"bnc\" style=\"width:100%;font-family:system-ui,-apple-system,Segoe UI,Roboto,Arial\"\u003e\u003cstyle\u003e#bnc *{box-sizing:border-box}#bnc .g{display:grid;grid-template-columns:repeat(3,minmax(0,1fr)) auto;gap:12px;align-items:end}#bnc label{font-size:14px}#bnc select{width:100%;height:40px;padding:0 10px;border:1px solid #ccc;border-radius:8px;background:#fff;margin-top:6px}#bnc .a{display:flex;gap:8px}#bnc button{height:40px;padding:0 14px;border-radius:10px;white-space:nowrap}@media(max-width:900px){#bnc .g{grid-template-columns:1fr}#bnc .a{display:grid}#bnc button{width:100%}}\u003c\/style\u003e\u003cdiv style=\"background:#f5f5f7;border-radius:10px;padding:12px 14px;margin-bottom:12px;font-size:14px\"\u003e\u003cp style=\"margin:0 0 6px\"\u003eSelect the nozzle bore, working pressure and capacity reserve. The reserve is applied only to compressor sizing.\u003c\/p\u003e\u003cp style=\"margin:0\"\u003e\u003cstrong\u003e💡 Capacity reserve:\u003c\/strong\u003e Nozzle wear increases the bore and air demand; additional pressure losses occur in the hose system.\u003c\/p\u003e\u003c\/div\u003e\u003cdiv class=\"g\"\u003e\u003clabel\u003eNozzle bore\u003cselect id=\"bd\"\u003e\u003coption value=\"\"\u003ePlease select\u003c\/option\u003e\u003coption\u003e3.5\u003c\/option\u003e\u003coption\u003e5\u003c\/option\u003e\u003coption\u003e6.5\u003c\/option\u003e\u003coption\u003e8\u003c\/option\u003e\u003coption\u003e9.5\u003c\/option\u003e\u003coption\u003e11\u003c\/option\u003e\u003coption\u003e12.5\u003c\/option\u003e\u003coption\u003e16\u003c\/option\u003e\u003coption\u003e19\u003c\/option\u003e\u003c\/select\u003e\u003c\/label\u003e\u003clabel\u003eWorking pressure\u003cselect id=\"bp\"\u003e\u003coption value=\"\"\u003ePlease select\u003c\/option\u003e\u003coption\u003e1\u003c\/option\u003e\u003coption\u003e2\u003c\/option\u003e\u003coption\u003e3\u003c\/option\u003e\u003coption\u003e4\u003c\/option\u003e\u003coption\u003e5\u003c\/option\u003e\u003coption\u003e6\u003c\/option\u003e\u003coption\u003e7\u003c\/option\u003e\u003coption\u003e8\u003c\/option\u003e\u003coption\u003e9\u003c\/option\u003e\u003coption\u003e10\u003c\/option\u003e\u003c\/select\u003e\u003c\/label\u003e\u003clabel\u003eCapacity reserve\u003cselect id=\"br\"\u003e\u003coption value=\"\"\u003ePlease select\u003c\/option\u003e\u003coption value=\"0\"\u003e0 %\u003c\/option\u003e\u003coption value=\".3\"\u003e30 %\u003c\/option\u003e\u003coption value=\".5\"\u003e50 %\u003c\/option\u003e\u003c\/select\u003e\u003c\/label\u003e\u003cdiv class=\"a\"\u003e\u003cbutton id=\"bc\" type=\"button\" style=\"background:#222;color:#fff;border:1px solid #222\"\u003eCalculate\u003c\/button\u003e\u003cbutton id=\"bx\" type=\"button\" style=\"background:#fff;border:1px solid #ccc\"\u003eReset\u003c\/button\u003e\u003c\/div\u003e\u003c\/div\u003e\u003cdiv id=\"bo\" style=\"background:#f8f8fa;border-radius:10px;padding:12px 14px;margin-top:12px\"\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('bc').onclick=function(){var d=document.getElementById('bd').value,p=document.getElementById('bp').value,r=document.getElementById('br').value,o=document.getElementById('bo');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('bx').onclick=function(){document.getElementById('bd').selectedIndex=0;document.getElementById('bp').selectedIndex=0;document.getElementById('br').selectedIndex=0;document.getElementById('bo').innerHTML='—'}})();\u003c\/script\u003e\u003chr\u003e\u003ch5\u003eHow It Works and Selecting the Nozzle Size\u003c\/h5\u003e\u003cp\u003e✔ Double-Venturi geometry for a particularly wide, even blast pattern\u003cbr\u003e✔ Larger bore sizes significantly increase surface coverage when sufficient air is available\u003cbr\u003e✔ Extra-long design for productive surface treatment\u003cbr\u003e✔ Compressor, hose cross-section and nozzle size must be sized as one system\u003c\/p\u003e\u003chr\u003e\u003ch5\u003eRecommended Abrasive Media\u003c\/h5\u003e\u003cp\u003e✔ Corundum \/ aluminium oxide\u003cbr\u003e✔ Garnet\u003cbr\u003e✔ Slag and mineral disposable abrasives\u003cbr\u003e✔ Glass beads\u003cbr\u003e✔ Steel grit in suitable systems\u003cbr\u003e✔ Other dry, free-flowing abrasives of suitable grit size\u003c\/p\u003e\u003chr\u003e\u003ch5\u003eApplications\u003c\/h5\u003e\u003cp\u003e✔ Large-area rust and coating removal\u003cbr\u003e✔ Steel, plant and vessel construction\u003cbr\u003e✔ Shipyards and heavy maintenance\u003cbr\u003e✔ Surface preparation before coating and corrosion protection\u003cbr\u003e✔ Mobile and stationary professional pressure blasting\u003c\/p\u003e\u003chr\u003e\u003ch5\u003eWear, Inspection and Operation\u003c\/h5\u003e\u003cp\u003eBoron carbide provides very high wear resistance but is more brittle than tungsten carbide. Protect the nozzle from drops and hard impacts. Check the bore regularly, as wear increases compressed-air demand.\u003c\/p\u003e\u003chr\u003e\u003ch5\u003eFAQ\u003c\/h5\u003e\u003cp\u003e\u003cstrong\u003eWhat distinguishes the Defender 1000 from a standard Venturi blast nozzle?\u003c\/strong\u003e\u003cbr\u003eThe extra-long double-Venturi geometry is designed for a particularly wide and even blast pattern.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat connection does the nozzle use?\u003c\/strong\u003e\u003cbr\u003e50 mm coarse thread with a 32 mm inlet.\u003c\/p\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\u003eHow does nozzle wear affect operation?\u003c\/strong\u003e\u003cbr\u003eAs the bore increases, compressed-air demand rises significantly, so compressor capacity should include a suitable reserve.\u003c\/p\u003e\u003chr\u003e\u003ch5\u003eConclusion\u003c\/h5\u003e\u003cp\u003eThe \u003cstrong\u003eContracor Defender 1000\u003c\/strong\u003e combines a highly wear-resistant boron carbide insert with extra-long double-Venturi geometry for productive large-area professional blasting.\u003c\/p\u003e\u003c\/div\u003e","brand":"Contracor","offers":[{"title":"6.5 x 192","offer_id":49016361550171,"sku":"10113022","price":1103.0,"currency_code":"DKK","in_stock":true},{"title":"8 x 209","offer_id":49016361582939,"sku":"10113023","price":1315.0,"currency_code":"DKK","in_stock":true},{"title":"9.5 x 240","offer_id":49016361615707,"sku":"10113024","price":1536.0,"currency_code":"DKK","in_stock":true},{"title":"11 x 279","offer_id":49016361648475,"sku":"10113025","price":1764.0,"currency_code":"DKK","in_stock":true},{"title":"12.5 x 309","offer_id":49016361681243,"sku":"10113026","price":2344.0,"currency_code":"DKK","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0876\/8526\/7803\/files\/doppel-venturi-sandstrahlduese-borcarbid-defender-1000-lang-blau-contracor.jpg?v=1726318911","url":"https:\/\/strahltechnik-express.de\/en-dk\/products\/contracor-doppelventuri-sandstrahlduse-defender-1000-borcarbid-extralang-dusenbohrung-6-5-bis-12-5-mm","provider":"ABS Strahltechnik","version":"1.0","type":"link"}