{"product_id":"castair-s-16d-050","title":"Castair S-16D-050","description":"\u003ch2\u003eCastair S-16D-050 Complete Air Filter Assembly — 1\/2” Inlet, 20 CFM, Silencer Type\u003c\/h2\u003e\\n\\n\u003cp\u003eThe Castair S-16D-050 is the factory-spec intake air filter assembly for reciprocating air compressor pumps with a 1\/2” NPT inlet. It is a silencer-type unit — handling both air filtration and intake noise attenuation in a single component. The assembly ships complete with the filter element already installed, rated for up to 20 CFM of airflow. At 6.75” outer diameter and 4.5” overall height, this filter fits Castair A4-series cast iron pumps and any comparable pump with a 1\/2” NPT inlet port.\u003c\/p\u003e\\n\\n\u003cp\u003eCastair, Inc. has been manufacturing cast iron air compressor pumps and systems in Spicer, Minnesota since 1991. When they equip their own compressors, this is the filter they use. The S-16D-050 is not a generic replacement — it is the OEM component matched to their pump line. If your pump is running a 1\/2” NPT inlet, this is the correct part number.\u003c\/p\u003e\\n\\n\u003ch3\u003eWhat the S-16D-050 Does\u003c\/h3\u003e\\n\u003cul\u003e\\n\u003cli\u003e\n\u003cstrong\u003eFilters intake air:\u003c\/strong\u003e Keeps airborne dust, particulates, and shop debris out of the compression chamber. Contaminated intake air accelerates cylinder wear, ring wear, and valve deterioration.\u003c\/li\u003e\\n\u003cli\u003e\n\u003cstrong\u003eSilences intake noise:\u003c\/strong\u003e The \"S\" prefix indicates silencer-type construction. The filter body attenuates the characteristic intake pulsation noise from the pump valve cycling.\u003c\/li\u003e\\n\u003cli\u003e\n\u003cstrong\u003eShips as a complete assembly:\u003c\/strong\u003e The 16D element is pre-installed. No separate element sourcing required for initial use.\u003c\/li\u003e\\n\u003cli\u003e\n\u003cstrong\u003eMatched to pump CFM:\u003c\/strong\u003e Rated at 20 CFM, which aligns with 5 HP cast iron pump displacement. An undersized filter creates inlet restriction and robs pump efficiency.\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-16D-050\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\/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 4.5”\u003c\/li\u003e\\n\u003cli\u003e\n\u003cstrong\u003eFlow Rating:\u003c\/strong\u003e 20 CFM\u003c\/li\u003e\\n\u003cli\u003e\n\u003cstrong\u003eType:\u003c\/strong\u003e Silencer-type complete assembly with element\u003c\/li\u003e\\n\u003cli\u003e\n\u003cstrong\u003eReplacement Element:\u003c\/strong\u003e 16D (ID 3”, OD 4-3\/8”, Height 2-1\/8”)\u003c\/li\u003e\\n\u003c\/ul\u003e\\n\\n\u003ch3\u003eCompatible Applications\u003c\/h3\u003e\\n\u003cul\u003e\\n\u003cli\u003eCastair A4-series cast iron pump with 1\/2” NPT inlet\u003c\/li\u003e\\n\u003cli\u003eCastair industrial series compressors rated 5 HP (I5xx models)\u003c\/li\u003e\\n\u003cli\u003eAny reciprocating compressor pump with a 1\/2” NPT inlet connection displacing up to 20 CFM\u003c\/li\u003e\\n\u003c\/ul\u003e\\n\\n\u003ch3\u003eReplacement Element: 16D\u003c\/h3\u003e\\n\u003cul\u003e\\n\u003cli\u003e\n\u003cstrong\u003eElement Part Number:\u003c\/strong\u003e 16D\u003c\/li\u003e\\n\u003cli\u003e\n\u003cstrong\u003eInner Diameter:\u003c\/strong\u003e 3”\u003c\/li\u003e\\n\u003cli\u003e\n\u003cstrong\u003eOuter Diameter:\u003c\/strong\u003e 4-3\/8”\u003c\/li\u003e\\n\u003cli\u003e\n\u003cstrong\u003eHeight:\u003c\/strong\u003e 2-1\/8”\u003c\/li\u003e\\n\u003cli\u003eThe 16DP, 20DP, and 32DP series filters include foam pre-filters; the S-16D-050 uses the standard 16D element.\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-16D-050\u003c\/strong\u003e — 1\/2” inlet, 6.75” OD x 4.5” height, 20 CFM (this unit)\u003c\/li\u003e\\n\u003cli\u003e\n\u003cstrong\u003eS-16D-075\u003c\/strong\u003e — 3\/4” inlet, 6.75” OD x 4.5” height, 20 CFM\u003c\/li\u003e\\n\u003cli\u003e\n\u003cstrong\u003eS-16D-100\u003c\/strong\u003e — 1” inlet, 6.75” OD x 4.5” height, 30 CFM\u003c\/li\u003e\\n\u003cli\u003e\n\u003cstrong\u003eS-20DP-100\u003c\/strong\u003e — 1” inlet, 6.75” OD x 7.0” height, 60 CFM (dual pre-filter body)\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\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-16D-050 vs. Stepping Up?\u003c\/h3\u003e\\n\u003cul\u003e\\n\u003cli\u003e\n\u003cstrong\u003eOrder the S-16D-050\u003c\/strong\u003e when your pump has a 1\/2” NPT inlet and displaces up to 20 CFM. Typically 5 HP and under.\u003c\/li\u003e\\n\u003cli\u003e\n\u003cstrong\u003eStep up to S-16D-075\u003c\/strong\u003e if your pump inlet is 3\/4” NPT. Same body, different thread.\u003c\/li\u003e\\n\u003cli\u003e\n\u003cstrong\u003eStep up to S-16D-100\u003c\/strong\u003e for 7.5–10 HP pumps with a 1” NPT inlet and up to 30 CFM.\u003c\/li\u003e\\n\u003cli\u003e\n\u003cstrong\u003eStep up to S-20DP series\u003c\/strong\u003e for 10–15 HP pumps displacing up to 60 CFM with 1”, 1-1\/4”, or 1-1\/2” inlets.\u003c\/li\u003e\\n\u003cli\u003e\n\u003cstrong\u003eStep up to S-32DP-200\u003c\/strong\u003e for 20–30 HP pumps with 2” inlets and up to 195 CFM.\u003c\/li\u003e\\n\u003c\/ul\u003e\\n\u003cp\u003eInlet port thread size is the primary selection criterion. Measure the pump inlet port before ordering.\u003c\/p\u003e\\n\\n\u003ch3\u003eWhat’s in the Box\u003c\/h3\u003e\\n\u003cul\u003e\\n\u003cli\u003e1x Castair S-16D-050 air filter assembly (silencer type), 1\/2” NPT inlet\u003c\/li\u003e\\n\u003cli\u003e1x 16D filter element (pre-installed inside assembly)\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 components\u003c\/strong\u003e — the same part that came on your compressor from the factory\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 technical support\u003c\/strong\u003e — call 866-217-0063 if you are unsure which filter size fits your pump\u003c\/li\u003e\\n\u003cli\u003e\n\u003cstrong\u003eFull manufacturer warranty\u003c\/strong\u003e on all Castair components\u003c\/li\u003e\\n\u003cli\u003e\n\u003cstrong\u003eHonest guidance\u003c\/strong\u003e — if you are cross-referencing a non-Castair pump, we can help you determine the right fit before you order\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":53342596661461,"sku":"S-16D-050","price":0.0,"currency_code":"USD","in_stock":true}],"url":"https:\/\/aircompressorfactorydirect.com\/products\/castair-s-16d-050","provider":"Air Compressor Factory Direct","version":"1.0","type":"link"}