{"product_id":"castair-1-1-2-inlet-60-cfm-6-75o-d-x7-0o-a-ht-complete-air-filter-assembly-and-element","title":"Castair 1 1\/2\" Inlet 60 CFM 6.75\"O.D.x7.0\"O.A.Ht. Complete Air Filter Assembly and Element","description":"\u003ch2\u003eCastair S-20DP-150 Complete Air Filter Assembly — 1-1\/2” Inlet, 60 CFM, Dual Foam Pre-Filter, Silencer Type\u003c\/h2\u003e\n\n\u003cp\u003eThe Castair S-20DP-150 is the factory intake air filter assembly for cast iron compressor pumps with a 1-1\/2” NPT inlet, rated at 60 CFM. This is the largest inlet size in the S-20DP body series. The \"DP\" designation means dual pre-filter construction — a foam pre-filter ahead of the primary 20DP element for extended service life in high-particulate shop environments. Body dimensions are 6.75” outer diameter and 7.0” overall height.\u003c\/p\u003e\n\n\u003cp\u003eThe 1-1\/2” inlet is found on Castair larger cast iron pumps — the C4U and comparable models in the 15 HP range. The S-20DP-150 uses the same filter body as the S-20DP-100 and S-20DP-125 but with a 1-1\/2” NPT inlet thread. Castair specifically notes that the 16DP, 20DP, and 32DP series filters include foam pre-filters as standard construction.\u003c\/p\u003e\n\n\u003ch3\u003eWhat the S-20DP-150 Does\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eFoam pre-filter plus primary element:\u003c\/strong\u003e The foam pre-filter stage captures coarse airborne debris before it reaches the fine primary filter element. Extends element life in body shops, fabrication shops, or environments with higher airborne particulate loads.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSilencer-type intake noise reduction:\u003c\/strong\u003e Attenuates the intake pulsation noise generated by the pump valve action. Meaningful improvement in ambient shop noise versus running without a silencer filter.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eComplete assembly with 20DP element:\u003c\/strong\u003e Ships ready to mount. Thread onto the 1-1\/2” NPT pump inlet and tighten.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e60 CFM rated flow:\u003c\/strong\u003e Matched to the displacement of 15 HP cast iron pump configurations. An undersized filter on a high-output pump creates inlet restriction and reduces pump efficiency and increases operating temperature.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePart Number:\u003c\/strong\u003e S-20DP-150\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer:\u003c\/strong\u003e Castair, Inc. (Spicer, MN)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInlet Connection:\u003c\/strong\u003e 1-1\/2” NPT\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOuter Diameter:\u003c\/strong\u003e 6.75”\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOverall Height:\u003c\/strong\u003e 7.0”\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFlow Rating:\u003c\/strong\u003e 60 CFM\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eType:\u003c\/strong\u003e Silencer-type, dual pre-filter construction with foam pre-filter\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eReplacement Element:\u003c\/strong\u003e 20DP (ID 3”, OD 4-3\/8”, Height 4-3\/4”)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompatible Pump:\u003c\/strong\u003e C4U and comparable cast iron pumps with 1-1\/2” NPT inlets\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eAvailable Configurations — Castair Air Filter Lineup\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eS-20DP-100\u003c\/strong\u003e — 1” inlet, 6.75” OD x 7.0” height, 60 CFM\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eS-20DP-125\u003c\/strong\u003e — 1-1\/4” inlet, 6.75” OD x 7.0” height, 60 CFM\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eS-20DP-150\u003c\/strong\u003e — 1-1\/2” inlet, 6.75” OD x 7.0” height, 60 CFM (this unit — $71.61)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eS-32DP-200\u003c\/strong\u003e — 2” inlet, 7.5” OD x 7.5” height, 195 CFM\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhen Does a Shop Need the S-20DP-150 vs. Stepping Up or Down?\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eOrder the S-20DP-150\u003c\/strong\u003e if your pump inlet is 1-1\/2” NPT and you are running a 15 HP class pump displacing up to 60 CFM.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eConfirm your inlet thread first:\u003c\/strong\u003e The S-20DP-100, -125, and -150 all use the same body at the same price. The only difference is inlet thread. A 1-1\/2” filter will not fit a 1” or 1-1\/4” port.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStep up to S-32DP-200\u003c\/strong\u003e for 20+ HP pumps with 2” NPT inlets and up to 195 CFM. The S-20DP body is not rated for that volume.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat’s in the Box\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e1x Castair S-20DP-150 complete air filter assembly (silencer type), 1-1\/2” NPT inlet\u003c\/li\u003e\n\u003cli\u003e1x 20DP filter element with foam pre-filter (pre-installed)\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhy Buy From Air Compressor Factory Direct?\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eGenuine Castair OEM parts\u003c\/strong\u003e — correct thread, correct element, correct fit\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFree shipping\u003c\/strong\u003e on qualifying orders\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFree tech support at 866-217-0063\u003c\/strong\u003e — we confirm the correct inlet thread for your specific pump model before you order\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eFull manufacturer warranty\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003e20DP replacement elements in stock\u003c\/strong\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003e\u003cstrong\u003eCall 866-217-0063 for quick answers and help!\u003c\/strong\u003e\u003c\/p\u003e","brand":"Cast Air","offers":[{"title":"Default Title","offer_id":53342598136021,"sku":"S-20DP-150","price":132.06,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0622\/8466\/0949\/files\/air-filter-kit_59605592-b985-44af-af29-aa895446fb04.jpg?v=1772652887","url":"https:\/\/aircompressorfactorydirect.com\/products\/castair-1-1-2-inlet-60-cfm-6-75o-d-x7-0o-a-ht-complete-air-filter-assembly-and-element","provider":"Air Compressor Factory Direct","version":"1.0","type":"link"}