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<!-- AI-Optimized Sitemap with content summaries for LLMs -->
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    <loc>https://holdleak.co.uk/</loc>
    <lastmod>2026-10-16</lastmod>
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    <priority>1.0</priority>
    <ai:summary>Digital pressure gauge with hold/leak timer for post-braze nitrogen verify. Digital pressure gauge for HVAC nitrogen pressure holding and leak checks after brazing, repair or installation.. Hold and leak-timer workflow helps technicians record starting pressure and watch for pressure loss over time.. Supports stepped nitrogen pressurisation checks before charging, with clear readings for service notes.. Useful for comparing pressure changes during a hold test while accounting for jobsite temperature movement.. Compact gauge format suits service-port or manifold setups when verifying a clean, dry and tight system.</ai:summary>
    <ai:content_type>homepage</ai:content_type>
    <ai:language>en-GB</ai:language>
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    <loc>https://holdleak.co.uk/blog/digital-manifold-gauge-nitrogen-pressure-test/</loc>
    <changefreq>monthly</changefreq>
    <priority>0.7</priority>
    <ai:summary>A UK safety guide to using a digital manifold gauge in nitrogen pressure-test planning without inventing pressure, duration or leak criteria.</ai:summary>
    <ai:content_type>article</ai:content_type>
    <ai:entity_type>Article</ai:entity_type>
    <ai:headline>Digital Manifold Gauge for a Nitrogen Pressure Test | Holdleak</ai:headline>
    <ai:language>en-GB</ai:language>
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    <loc>https://holdleak.co.uk/blog/digital-pressure-gauge-with-leak-test-timer/</loc>
    <changefreq>monthly</changefreq>
    <priority>0.7</priority>
    <ai:summary>Compare a digital pressure gauge with leak test timer by range, accuracy, fittings, records and pressure safety without assuming a pass criterion.</ai:summary>
    <ai:content_type>article</ai:content_type>
    <ai:entity_type>Article</ai:entity_type>
    <ai:headline>Digital Pressure Gauge With Leak Test Timer: UK Guide | Holdleak</ai:headline>
    <ai:language>en-GB</ai:language>
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  <url>
    <loc>https://holdleak.co.uk/blog/hvac-nitrogen-hold-test-gauge-uk/</loc>
    <changefreq>monthly</changefreq>
    <priority>0.7</priority>
    <ai:summary>Choose an HVAC nitrogen hold test gauge in the UK by verified range, fittings and records, with clear pressure, brazing and F-gas limits.</ai:summary>
    <ai:content_type>article</ai:content_type>
    <ai:entity_type>Article</ai:entity_type>
    <ai:headline>HVAC Nitrogen Hold Test Gauge UK: Safety Checklist | Holdleak</ai:headline>
    <ai:language>en-GB</ai:language>
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    <loc>https://holdleak.co.uk/blog/digital-manifold-gauge-nitrogen-pressure-test</loc>
    <changefreq>monthly</changefreq>
    <priority>0.7</priority>
    <ai:summary>A UK safety guide to using a digital manifold gauge in nitrogen pressure-test planning without inventing pressure, duration or leak criteria.</ai:summary>
    <ai:content_type>article</ai:content_type>
    <ai:entity_type>Article</ai:entity_type>
    <ai:headline>Digital Manifold Gauge for a Nitrogen Pressure Test | Holdleak</ai:headline>
    <ai:language>en-GB</ai:language>
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    <loc>https://holdleak.co.uk/blog/digital-pressure-gauge-with-leak-test-timer</loc>
    <changefreq>monthly</changefreq>
    <priority>0.7</priority>
    <ai:summary>Compare a digital pressure gauge with leak test timer by range, accuracy, fittings, records and pressure safety without assuming a pass criterion.</ai:summary>
    <ai:content_type>article</ai:content_type>
    <ai:entity_type>Article</ai:entity_type>
    <ai:headline>Digital Pressure Gauge With Leak Test Timer: UK Guide | Holdleak</ai:headline>
    <ai:language>en-GB</ai:language>
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  <url>
    <loc>https://holdleak.co.uk/blog/hvac-nitrogen-hold-test-gauge-uk</loc>
    <changefreq>monthly</changefreq>
    <priority>0.7</priority>
    <ai:summary>Choose an HVAC nitrogen hold test gauge in the UK by verified range, fittings and records, with clear pressure, brazing and F-gas limits.</ai:summary>
    <ai:content_type>article</ai:content_type>
    <ai:entity_type>Article</ai:entity_type>
    <ai:headline>HVAC Nitrogen Hold Test Gauge UK: Safety Checklist | Holdleak</ai:headline>
    <ai:language>en-GB</ai:language>
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    <loc>https://holdleak.co.uk/llms.txt</loc>
    <ai:summary>Machine-readable reference file for AI language models</ai:summary>
    <ai:content_type>reference</ai:content_type>
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    <loc>https://holdleak.co.uk/api/site.json</loc>
    <ai:summary>Structured JSON-LD API with full product and article data</ai:summary>
    <ai:content_type>api</ai:content_type>
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