{"product_id":"pro-spec-one-point-five-by-two-inch-cast-iron-pres","title":"Pro Spec One Point Five By Two Inch Cast Iron Pressure Relief Valve Handles Thirty Psi Heavy Duty Shop Grade Safety Valve For Steam And Hot Water Systems Asme Section Iv Certified","description":"\u003cdiv\u003e\n\u003cp\u003eHeavy Duty Cast Iron Pressure Relief Valve For Steam\u003cbr\u003e\n✔️ Single shop grade safety unit rated for thirty psi pressure control\u003c\/p\u003e \u003cp\u003eThis single heavy duty relief valve is engineered for automatic thermal discharge in high pressure heating loops. It mounts securely onto boiler headers or pipeline junctions to safely vent accumulated steam before equipment damage occurs.\u003c\/p\u003e ✅ One point five inch inlet matches two inch outlet piping configuration\u003cbr\u003e\n✅ ASME Section IV certification ensures reliable performance in regulated environments\u003cbr\u003e\n✅ Durable cast iron body withstands repeated thermal cycling and corrosion exposure\u003cbr\u003e\n✅ Pre-set spring mechanism delivers consistent thirty psi blowdown without manual adjustment\u003cbr\u003e \u003cp\u003e💡 What causes pressure spikes in closed steam loops that trigger relief valves?\nA sealed seat design keeps airflow smooth until internal force pushes past the spring rating. Thermal expansion throws water into vapor states that spike volume fast. Handling those surges easily is why operators grab these units. Here is how they manage rush hours.\n- Heat waves force liquid into rapidly expanding vapor that multiplies volume overnight\n- Calibrated springs crack open exactly at the set mark to bleed stress safely away\n- Blowdown tweaks stop chatter so the lid snaps back when numbers settle down flat\n- Matching port sizes keeps flow steady and avoids noisy throttle effects during heavy shifts\u003c\/p\u003e✝️\u003c\/div\u003e","brand":"Amazon","offers":[{"title":"Default Title","offer_id":49380303536363,"sku":"VXB003U4KOHM","price":1081.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0662\/3268\/0683\/files\/41_WetP7sTL.jpg?v=1788909578","url":"https:\/\/vxb.com\/products\/pro-spec-one-point-five-by-two-inch-cast-iron-pres","provider":"VXB Bearings","version":"1.0","type":"link"}