{"product_id":"armstrong-110223b-244-astro-220ssu-t-union-stainless-steel-w-timer","title":"Armstrong 110223B-244 Astro 220SSU-T Union Stainless Steel w\/Timer","description":"\u003cp\u003eThe stainless‑steel union with an integrated timer delivers a secure, corrosion‑resistant connection for boiler and hydronic loop applications, allowing precise flow control. The \u003cstrong\u003e110223B-244\u003c\/strong\u003e Armstrong Astro 220SSU‑T model is engineered for quick installation and long‑term durability.\u003c\/p\u003e\u003cp\u003eWhen the timer reaches the programmed interval, the internal valve closes automatically, halting flow without manual intervention. This mechanical timing action reduces pump run‑time, saves energy, and protects downstream equipment from over‑pressurization.\u003c\/p\u003e\u003ch4\u003eKey System Performance Baselines:\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eLeak‑Free Seal:\u003c\/strong\u003e Guarantees a tight joint up to 150 psi operating pressure.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTimer Accuracy:\u003c\/strong\u003e Provides ±5 seconds timing precision for scheduled flow shutdowns.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCorrosion Resistance:\u003c\/strong\u003e Stainless‑steel construction exceeds ASTM A240 standards for longevity.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTemperature Range:\u003c\/strong\u003e Operates reliably from -20 °F to 250 °F, covering most heating systems.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e🚨\u003cstrong\u003eApplication Profile:\u003c\/strong\u003e Ideal for boiler feed lines, chilled water circuits, radiant heating loops, and any hydronic system requiring timed flow control.\u003c\/p\u003e","brand":"Armstrong","offers":[{"title":"Default Title","offer_id":43123915063390,"sku":"110223B-244","price":734.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0663\/7151\/8558\/files\/110223B_244_image_6dc6299d-6a11-402d-af1f-905df36668f6.png?v=1786022358","url":"https:\/\/nationalboilersupply.com\/products\/armstrong-110223b-244-astro-220ssu-t-union-stainless-steel-w-timer","provider":"National Boiler Supply","version":"1.0","type":"link"}