{"product_id":"tsurumi-32trn21-5-submersible-self-aspirating-aerator-32trn21-5","title":"Tsurumi 32TRN21.5 Submersible Self-Aspirating Aerator – 32TRN21.5","description":"\u003cp\u003e\nThe Tsurumi 32TRN21.5 is a submersible self-aspirating aerator designed for efficient aeration and mixing in sewage and wastewater treatment applications. Featuring Tsurumi’s special semi-open impeller, it draws air directly from above the water surface without requiring a separate blower for standard aeration duties. The air and water are mixed into fine bubbles and discharged evenly, increasing dissolved oxygen levels while providing powerful agitation throughout the tank.\n\u003c\/p\u003e\n\n\u003cp\u003e\nDesigned for continuous operation, the TRN series incorporates Tsurumi's exclusive Oil Lifter, dual silicon carbide mechanical seals, and an anti-wicking cable entry system for long service life and dependable performance in demanding wastewater environments.\n\u003c\/p\u003e\n\n\u003ch3\u003eSuitable Applications\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eMixing and holding tanks\u003c\/li\u003e\n  \u003cli\u003eSewage treatment plants and systems\u003c\/li\u003e\n  \u003cli\u003eEqualization tanks\u003c\/li\u003e\n  \u003cli\u003eReaction tanks\u003c\/li\u003e\n  \u003cli\u003eBatch reactors\u003c\/li\u003e\n  \u003cli\u003eAbattoirs\u003c\/li\u003e\n  \u003cli\u003eFish tanks and water containment systems\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eSelf-aspirating operation eliminates the need for a separate blower for standard aeration applications.\u003c\/li\u003e\n  \u003cli\u003eSpecial semi-open impeller produces fine air bubbles for efficient oxygen transfer.\u003c\/li\u003e\n  \u003cli\u003ePowerful radial agitation created by combined air-lift and convective flow.\u003c\/li\u003e\n  \u003cli\u003eSuitable for deeper installations when used with an optional stand or draft tube.\u003c\/li\u003e\n  \u003cli\u003eTsurumi Oil Lifter continuously lubricates the mechanical seal for extended service life.\u003c\/li\u003e\n  \u003cli\u003eDual silicon carbide mechanical seals provide superior durability.\u003c\/li\u003e\n  \u003cli\u003eAnti-wicking cable entry protects the motor from moisture ingress.\u003c\/li\u003e\n  \u003cli\u003eDesigned for continuous-duty wastewater treatment applications.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eKey Specifications\u003c\/h3\u003e\n\n\u003ctable\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eModel\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e32TRN21.5\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePump Type\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eSubmersible Self-Aspirating Aerator\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eAir Inlet Bore\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e32 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMotor Output\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e1.5 kW\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePhase\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eThree Phase\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eStarting Method\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eDirect On Line (D.O.L.)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMaximum Solids Passage\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e12 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMaximum Water Depth\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e3.5 m\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003eDocumentation \u0026amp; Downloads\u003c\/h3\u003e\n\n\u003ctable\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eProduct Catalogue\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003ca href=\"https:\/\/tsurumipumps.com.au\/wp-content\/uploads\/2025\/09\/TRN_BER_PLSwAK_IA121-D.pdf\" target=\"_blank\"\u003eDownload PDF\u003c\/a\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e","brand":"Tsurumi","offers":[{"title":"Default Title","offer_id":45497634553965,"sku":"32TRN21.5","price":0.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1399\/2979\/files\/TRN.png?v=1784878271","url":"https:\/\/pumptastic.com.au\/products\/tsurumi-32trn21-5-submersible-self-aspirating-aerator-32trn21-5","provider":"Pumptastic","version":"1.0","type":"link"}