{"product_id":"armstrong-110116mf-302-h-53-lv-pump-less-volute","title":"Armstrong 110116MF-302 H-53 LV Pump Less Volute","description":"\u003cp\u003eDesigned for residential and light‑commercial boiler systems, the Armstrong H‑53 LV pump provides reliable water circulation for efficient heating. The \u003cstrong\u003e110116MF-302\u003c\/strong\u003e replacement restores the H‑53 LV pump’s less‑volute design, ensuring optimal flow and low‑noise operation.\u003c\/p\u003e\u003cp\u003eThe less‑volute impeller reduces hydraulic losses, delivering consistent pressure across a wide range of flow rates while minimizing vibration and sound. Its cast‑iron housing and stainless‑steel internals stand up to the demanding conditions of hydronic heating loops.\u003c\/p\u003e\u003ch4\u003eKey System Performance Baselines:\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eFlow Capacity:\u003c\/strong\u003e Up to 10 gpm at 30 psi, supporting typical residential heating loads.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHydraulic Efficiency:\u003c\/strong\u003e Exceeds 70%, maximizing energy savings.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNoise Level:\u003c\/strong\u003e Operates below 55 dB(A), ideal for quiet environments.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterials:\u003c\/strong\u003e Cast iron housing with stainless‑steel impeller for durability.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eConnection Size:\u003c\/strong\u003e Standard 2‑in. NPT inlet and outlet for straightforward retrofit.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e⚠️ \u003cstrong\u003eApplication Profile:\u003c\/strong\u003e Suitable for Armstrong H‑53 LV boiler pumps, Raypak heating units, and other low‑volute hydronic systems in residential or small‑commercial installations.\u003c\/p\u003e","brand":"Armstrong","offers":[{"title":"Default Title","offer_id":43123724714078,"sku":"110116MF-302","price":2194.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0663\/7151\/8558\/files\/110116MF_302_image_b5966372-4e91-4b69-881f-34d58f406a11.png?v=1786018196","url":"https:\/\/nationalboilersupply.com\/products\/armstrong-110116mf-302-h-53-lv-pump-less-volute","provider":"National Boiler Supply","version":"1.0","type":"link"}