Description
<h3>EA7120-150 Safety Relief Valve</h3><p>The EA7120-150 is an ASME safety relief valve used for overpressure protection on Altec AIR desiccant dryer pressure vessels and compressed air equipment designed for 150 PSIG service. It provides a mechanical safety path to relieve excess pressure and help protect towers, piping, and downstream components.</p><p>Altec AIR’s large-capacity HRL Series heatless desiccant dryers are built with ASME safety relief valves and are available in standard 150 PSIG designs and optional 200 PSIG models, making correct relief valve selection critical when servicing or maintaining the package.</p><h4>Key Features</h4><ul><li><strong>Overpressure protection:</strong> Opens to vent pressure when system pressure exceeds the valve setting, helping prevent damage to pressure vessels and components.</li><li><strong>Designed for ASME pressure-vessel applications:</strong> Used on Altec AIR desiccant dryer packages that incorporate ASME/CRN-approved pressure vessels.</li><li><strong>Service-friendly replacement part:</strong> Supports maintenance and repair work when an existing valve is due for inspection, recertification, or replacement.</li></ul><h4>Specifications</h4><table cellpadding="8" cellspacing="6"><tbody><tr><th align="left">MPN</th><td>EA7120-150</td></tr><tr><th align="left">Component Type</th><td>Safety Relief Valve</td></tr><tr><th align="left">Pressure Rating</th><td>150 PSIG service</td></tr><tr><th align="left">Rated Flow</th><td>4,125 CFM</td></tr><tr><th align="left">Relief Setting</th><td>150 PSIG</td></tr><tr><th align="left">Connection</th><td>2 inch</td></tr></tbody></table><h4>Installation & Maintenance Notes</h4><ul><li>Confirm the required relief pressure and connection size match the equipment nameplate/spec before ordering a replacement valve.</li><li>Install the valve in the intended relief port and keep the discharge path unobstructed to allow safe venting.</li><li>Follow your facility’s maintenance plan and any applicable code requirements for inspection/testing intervals.</li><li>If the valve has lifted, is leaking, or shows corrosion/damage, replacement is typically recommended to restore reliable protection.</li></ul><h3><strong>Frequently Asked Questions</strong></h3><h4>EA7120-150 Safety Relief Valve</h4><details open=""><summary>▶️ <strong>Question:</strong> What does a safety relief valve do on a desiccant air dryer?</summary><p><strong>Answer:</strong> It provides a mechanical safety device that opens when system pressure rises above the valve’s set point, venting compressed air to help prevent overpressure damage to pressure vessels and related components.</p></details><details><summary>▶️ <strong>Question:</strong> How do I make sure I’m choosing the correct replacement relief valve?</summary><p><strong>Answer:</strong> Match the relief pressure requirement (PSIG), connection size, and any required approvals to the equipment’s documentation/nameplate. If the dryer has been configured for higher pressure service, the relief valve must match that design pressure.</p></details><details><summary>▶️ <strong>Question:</strong> What does the rated flow (CFM) tell me?</summary><p><strong>Answer:</strong> Rated flow indicates how much air the valve can relieve under specified conditions. It helps ensure the relief device can vent enough air to keep pressure from continuing to rise in an overpressure event.</p></details><details><summary>▶️ <strong>Question:</strong> Should I reuse an older relief valve after it has popped open?</summary><p><strong>Answer:</strong> If a relief valve has lifted, is weeping, or no longer reseats cleanly, it may not provide consistent protection. Many facilities replace the valve to restore reliable operation, especially on critical compressed air equipment.</p></details><details><summary>▶️ <strong>Question:</strong> Where is the relief valve typically located on a heatless desiccant dryer?</summary><p><strong>Answer:</strong> It is commonly installed on the pressure vessels/towers or associated pressure-containing components where overpressure protection is required. Location varies by model and configuration—verify against the equipment documentation.</p></details><details><summary>▶️ <strong>Question:</strong> Can I install a valve with a higher pressure rating “just to be safe”?</summary><p><strong>Answer:</strong> No. A higher set pressure can reduce protection and may violate code or equipment design limits. The relief valve setting should align with the pressure vessel and system design requirements.</p></details>
