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} .usalab-prod thead th { background: var(--accent); color: #fff; text-align: left; padding: 8px 10px; font-weight: 700; font-size: 0.9rem; } .usalab-prod tbody td { padding: 6px 8px; border-top: 1px solid var(--ring); font-size: 0.85rem; } .usalab-prod tbody tr { height: 20px; } .usalab-prod tbody tr:nth-child(odd) td { background: #fbfdff; } /* Responsive table adjustments for mobile */ @media (max-width: 600px) { .usalab-prod .spec-table-container { overflow-x: auto; } .usalab-prod table { min-width: 0; width: 100%; } .usalab-prod thead th, .usalab-prod tbody td { padding: 4px 6px; font-size: 0.8rem; } .usalab-prod tbody tr { height: 18px; } } /* -------- Why Buy -------- */ .usalab-prod .why { padding:16px 20px; background:#fff; border-top:1px solid var(--ring); } .usalab-prod .kpis { display:grid; grid-template-columns:repeat(4,1fr); gap:12px; margin-top:10px; } .usalab-prod .kpi { border:1px solid var(--ring); border-radius:12px; padding:14px; background:#fff; display:flex; align-items:flex-start; 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Each hemi lid includes 4 x 1/2" compression ports, allowing users to add probes, thermowells, dip tubes, sensors, and other compatible accessories.Available in multiple base Tri-Clamp sizes, these hemispherical lids provide a clean, sanitary-style connection while offering several Tri-Clamp port configurations depending on the selected lid size. The domed design provides excellent clearance and flexibility for building custom process assemblies.Whether you are configuring a laboratory vessel, extraction system, mixing tank, filtration setup, or custom stainless steel process system, USA Lab Tri-Clamp Hemispherical Lids with 1/2" Compression Ports deliver a reliable, versatile solution for expanding system functionality.  Verify base Tri-Clamp size, port size, gasket compatibility, and system requirements before installation. Compression fittings and Tri-Clamp ports should be properly tightened and inspected before use.4 x 1/2" Compression Ports Tri-Clamp Base Options Custom Vessel Setups Hemispherical Lid DesignCompression Ports: 4 x 1/2" compression ports for probes, tubing, and accessories.Base Options: Available in 6", 8", and 12" Tri-Clamp lid sizes.Customization: Multiple Tri-Clamp ports allow flexible system configuration.Why buy from USA LabExpert SupportEngineers & technicians on staff.Quality FirstTested and trusted products.Fast FulfillmentNationwide 1-2 day shipping.Warranty & PartsUS-based service & spares. Resources & DownloadsProduct Documentation Technical Support Compatibility Help Installation GuidanceWhy choose these hemispherical lids?Maximum customization — 4 x 1/2" compression ports support probes, sensors, fittings, and tubing accessories.Multiple size options — available with 6", 8", and 12" Tri-Clamp base configurations.Tri-Clamp port flexibility — port layouts vary by size to support custom system builds.Hemispherical design — domed lid profile provides clearance and a professional vessel setup.Ideal for process systems — commonly used on tanks, reactors, extraction systems, and lab vessels.Talk to an expertGet sizing help, port configuration guidance, and integration tips for your vessel setup.Call 734-855-4890 Contact SalesTechnical SpecificationsSpecificationHLC-6HLC-8HLC-12Base6" Tri-Clamp8" Tri-Clamp12" Tri-ClampTri-Clamp Ports3 x 1.5" TC3 x 2" TC(2 x 2" TC) + (1 x 3" TC Center)Compression Ports4 x 1/2" Compression4 x 1/2" Compression4 x 1/2" CompressionProduct TypeHemispherical LidHemispherical LidHemispherical LidConnection StyleTri-ClampTri-ClampTri-ClampPort StyleTri-Clamp + CompressionTri-Clamp + CompressionTri-Clamp + CompressionApplicationCustom vessel setupsCustom vessel setupsCustom vessel setupsCommon UsesTanks, reactors, extraction systemsTanks, reactors, extraction systemsTanks, reactors, extraction systemsCustomizationHighHighHighCompatibility6" Tri-Clamp vessels8" Tri-Clamp vessels12" Tri-Clamp vesselsInstallationUse compatible gaskets and clampsUse compatible gaskets and clampsUse compatible gaskets and clampsLid ShapeHemisphericalHemisphericalHemisphericalBrandUSA LabUSA LabUSA LabPopular Industries & Use CasesBotanical Extraction Pharmaceutical Chemical Sciences Academic & ResearchBusiness Solutions & ProcurementPrograms & TermsExclusive options for businesses and academics.Apply for Net TermsAcademic DiscountDocumentation & ComplianceKeep purchasing streamlined and compliant.Request a Quote Tax ExemptionCustom SolutionsTailored tanks, skids, and integration help.Custom Request ConsultingTalk to SalesWe’ll help spec the right lid and port layout for your vessel.Call 734-855-4890 Email Sales/SupportFAQWhat are USA Lab Tri-Clamp Hemispherical Lids with 1/2" Compression Ports used for?USA Lab Tri-Clamp Hemispherical Lids with 1/2" Compression Ports are used to customize stainless steel vessels, reactors, tanks, and processing systems with Tri-Clamp ports and compression connections.How many compression ports are included on the USA Lab Tri-Clamp Hemispherical Lids with 1/2" Compression Ports?Each USA Lab Tri-Clamp Hemispherical Lid with 1/2" Compression Ports includes 4 x 1/2" compression ports for compatible probes, tubing, sensors, and accessories.What sizes are available for the USA Lab Tri-Clamp Hemispherical Lids with 1/2" Compression Ports?The USA Lab Tri-Clamp Hemispherical Lids with 1/2" Compression Ports are available in HLC-6, HLC-8, and HLC-12 configurations with 6", 8", and 12" Tri-Clamp bases.Do the USA Lab Tri-Clamp Hemispherical Lids with 1/2" Compression Ports include Tri-Clamp ports?Yes. The USA Lab Tri-Clamp Hemispherical Lids with 1/2" Compression Ports include Tri-Clamp ports that vary by size, including 1.5", 2", and 3" TC port configurations depending on the selected model.Important Shipping Notice!DISCLAIMER:All items are carefully packaged to ensure safe delivery. In the rare event that your item arrives damaged, please notify us within 3 days of receipt. We will promptly provide a replacement or issue a refund.Please note that any damage occurring after delivery is not covered under warranty. We appreciate your understanding and your trust in our products.Need Support?We’ll get you answers fast.Call 734-855-4890 Contact Us!×Email Sales & SupportWe usually reply same business day. ×Technical SupportShare details and our techs will follow up.  window.__hsTechLoaded = false; function loadHsTechForm(){ if(window.__hsTechLoaded || !window.hbspt || !window.hbspt.forms) return; hbspt.forms.create({ portalId: "48018401", formId: "3349ae7f-7c59-4504-b671-d8118768d766", region: "na1", target: "#hs-tech-form" }); window.__hsTechLoaded = true; } ×Request a QuoteTell us what you need and we’ll respond quickly.  window.__hsQuoteLoaded = false; function loadHsQuoteForm(){ if(window.__hsQuoteLoaded || !window.hbspt || !window.hbspt.forms) return; hbspt.forms.create({ portalId: "48018401", formId: "f106136b-8a8f-4070-8d33-c7910de34991", region: "na1", target: "#hs-quote-form" }); window.__hsQuoteLoaded = true; } (function(){ const openers = document.querySelectorAll('[data-open]'); const closeEls = document.querySelectorAll('[data-close]'); const modals = { hsEmailSupport: document.getElementById('hsEmailSupport'), hsTechSupport: document.getElementById('hsTechSupport'), hsQuote: document.getElementById('hsQuote') }; openers.forEach(btn=>{ btn.addEventListener('click', function(e){ e.preventDefault(); const id = this.getAttribute('data-open'); if(!id || !modals[id]) return; modals[id].classList.add('open'); if(id==='hsTechSupport'){ loadHsTechForm(); } if(id==='hsQuote'){ loadHsQuoteForm(); } }); }); closeEls.forEach(x=>{ x.addEventListener('click', ()=> x.closest('.usalab-modal').classList.remove('open')); }); Object.values(modals).forEach(m=>{ if(!m) return; m.addEventListener('click', (e)=>{ if(e.target===m) m.classList.remove('open'); }); }); })();