{"title":"Caleffi","description":"\u003cp\u003e\u003cspan\u003ePrecision Italian-engineered hydronic trim, balancing valves, and magnetic air\/dirt separators from Caleffi. Essential components for closed-loop thermal stability and system protection.\u003c\/span\u003e\u003c\/p\u003e","products":[{"product_id":"caleffi-549-series-discaldirtmag-magnetic-air-and-dirt-separator-3-flanged","title":"Caleffi NA546M - DISCALDIRTMAG NA546M Commercial Flanged Magnetic Air\/Dirt Separator, 3\"","description":"\u003cp\u003eThe Caleffi NA546M Series DISCALDIRTMAG® is an all-in-one commercial air, dirt, and magnetic separator designed for high-performance hydronic heating and cooling systems. By combining continuous micro-bubble air elimination with a high-capacity dirt collection chamber and a powerful magnetic field, it provides total system protection, prevents component wear, and maintains peak heat transfer efficiency across large-scale commercial networks.\u003c\/p\u003e\n\n\u003chr style=\"border: 0; border-top: 1px solid #e0e0e0; margin: 25px 0;\"\u003e\n\n\u003ch3 style=\"font-size: 16px; font-weight: bold; color: #111; margin-bottom: 10px;\"\u003eKey Performance Features:\u003c\/h3\u003e\n\u003cul style=\"padding-left: 20px; margin: 0;\"\u003e\n  \u003cli style=\"margin-bottom: 8px;\"\u003e\n\u003cstrong\u003eTriple-Action Protection:\u003c\/strong\u003e Simultaneously eliminates micro-bubbles down to micron size, traps non-magnetic debris, and captures fine magnetite (black iron oxide) via a powerful external neodymium magnetic band.\u003c\/li\u003e\n  \u003cli style=\"margin-bottom: 8px;\"\u003e\n\u003cstrong\u003eZero System Downtime:\u003c\/strong\u003e The bottom blowdown drain valve allows accumulated dirt and ferrous debris to be safely flushed out of the collection chamber while the hydronic system remains fully operational under pressure.\u003c\/li\u003e\n  \u003cli style=\"margin-bottom: 8px;\"\u003e\n\u003cstrong\u003eUltra-Low Pressure Drop:\u003c\/strong\u003e Engineered with a high-volume internal chamber that minimizes flow resistance, ensuring consistent flow rates and reducing pumping energy costs over the lifespan of the system.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Caleffi","offers":[{"title":"Default Title","offer_id":42829296205918,"sku":"NA546580AM","price":3976.85,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0663\/7151\/8558\/files\/Caleffi-546580AM-DIRTMAG-3-Inch-Flanged-Separator.jpg?v=1780920072"},{"product_id":"cal-551006a","title":"Caleffi DISCAL 1-1\/2 - DISCAL Air Separator, 1-1\/2\" NPT Threaded","description":"\u003cdiv style=\"font-family: Arial, sans-serif; font-size: 15px; color: #333333; line-height: 1.6;\"\u003e\n  \u003cp\u003e\n    The \u003cstrong\u003eCaleffi DISCAL® 551 Series (Threaded NPT Model)\u003c\/strong\u003e continuously extracts micro-bubbles of entrained air from closed hydronic heating and cooling loops. Featuring heavy-duty 1-1\/2\" female NPT threaded connections, this model easily threads directly onto rigid commercial system pipe schedules. By dropping fluid velocity inside its specially shaped brass body, it allows minuscule air pockets to coalesce, break free from the system media, and vent automatically into the atmosphere.\n  \u003c\/p\u003e\n  \u003cp style=\"margin-top: 15px;\"\u003e\n    Equipped with a glass-reinforced nylon internal element, the DISCAL creates a high-performance swirling matrix that captures 100% of trapped system air down to the micro-bubble level. Eliminating oxygen loop-circulation provides premium component protection—preventing mechanical pump noise, reducing terminal unit corrosion, and optimizing boiler plant heat transfer efficiency.\n  \u003c\/p\u003e\n\u003c\/div\u003e","brand":"Caleffi","offers":[{"title":"Default Title","offer_id":42839826759774,"sku":"CAL-551006A-NPT","price":293.72,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0663\/7151\/8558\/files\/aleffi-discal-1-half-inch-brass-air-separator.jpg?v=1781118199"},{"product_id":"cal-546306a","title":"Caleffi DISCALDIRTMAG 1-1\/2 - DISCALDIRTMAG Magnetic Separator, 1-1\/2\"","description":"\u003cdiv style=\"font-family: Arial, sans-serif; font-size: 15px; color: #333333; line-height: 1.6;\"\u003e\n  \u003cp\u003e\n    The \u003cstrong\u003eCaleffi DISCALDIRTMAG™ Series 5461\u003c\/strong\u003e high-efficiency commercial air, dirt, and magnetic separator delivers exceptional multi-function component protection for closed hydronic heating and cooling systems. Built to handle light commercial applications, this unit continuously eliminates micro-bubbles of trapped air and traps non-ferrous dirt particles down to 5 microns while your mechanical equipment remains in full operation.\n  \u003c\/p\u003e\n  \u003cp style=\"margin-top: 15px;\"\u003e\n    Featuring a powerful, external clip-on neodymium rare-earth magnetic collar, the DISCALDIRTMAG achieves a massive 2.5 times the capture performance of a standard inline debris separator. By isolating up to 100% of circulating ferrous impurities and magnetite sludge common in B2B piping networks, it prevents modern high-efficiency boiler heat exchangers from scaling, minimizes pump circulator wear, and preserves overall plant thermal performance.\n  \u003c\/p\u003e\n\u003c\/div\u003e","brand":"Caleffi","offers":[{"title":"Default Title","offer_id":42839826792542,"sku":"CAL-546306AM","price":1247.52,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0663\/7151\/8558\/files\/caleffi-5461-series-steel-discaldirtmag.jpg?v=1781059882"},{"product_id":"cal-546308a","title":"Caleffi DISCALDIRTMAG 2 - DISCALDIRTMAG Magnetic Separator, 2\"","description":"\u003cdiv style=\"font-family: Arial, sans-serif; font-size: 15px; color: #333333; line-height: 1.6;\"\u003e\n  \u003cp\u003e\n    The \u003cstrong\u003eCaleffi DISCALDIRTMAG™ Series 5461\u003c\/strong\u003e commercial air, dirt, and magnetic separator combines high-efficiency micro-bubble deaeration with a powerful magnetic particle trap. Engineered specifically to protect large central heating plants, heat exchangers, and high-efficiency commercial boilers, this multifunction unit continuously captures and discharges both air bubbles and microscopic impurities down to 5 microns while the mechanical system remains in full operation.\n  \u003c\/p\u003e\n  \u003cp style=\"margin-top: 15px;\"\u003e\n    Equipped with a powerful, removable external neodymium rare-earth magnetic collar, the DISCALDIRTMAG achieves a massive 2.5 times the removal performance of standard, non-magnetic inline separators. By trapping 100% of the ferrous impurities, magnetite, and black iron oxide sludge circulating within older or demanding B2B piping networks, it prevents component blockages, eliminates pump wear, and maintains structural system thermal efficiency.\n  \u003c\/p\u003e\n\u003c\/div\u003e","brand":"Caleffi","offers":[{"title":"Default Title","offer_id":42839826825310,"sku":"CAL-546308AM","price":1379.53,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0663\/7151\/8558\/files\/caleffi-5461-series-steel-discaldirtmag.jpg?v=1781059882"},{"product_id":"cal-132662ac","title":"Caleffi QuickSetter 1 - QuickSetter Balancing Valve, 1\"","description":"\u003cdiv style=\"font-family: Arial, sans-serif; font-size: 15px; color: #333333; line-height: 1.6;\"\u003e\n  \u003cp\u003e\n    The \u003cstrong\u003eCaleffi QuickSetter™ 132 Series\u003c\/strong\u003e static balancing valve provides fast, precise setting and checking of flow rates for fluid supplied to terminal units, radiant networks, and multi-zone commercial hydronic systems. Proper loop balancing ensures the entire system operates efficiently to targeted mechanical engineering specifications, optimizing thermal performance while keeping energy consumption down.\n  \u003c\/p\u003e\n  \u003cp style=\"margin-top: 15px;\"\u003e\n    Designed with a built-in flow meter housed in an isolated bypass circuit, the internal components are kept out of the main stream during normal operation. This unique design prevents scaling, rust fouling, and general system debris from coating the sight window over time. Pulling the manual bypass ring instantly registers a clear, direct GPM flow scale reading, allowing operators to balance circuits on-site without needing specialized digital differential pressure gauges.\n  \u003c\/p\u003e\n\u003c\/div\u003e","brand":"Caleffi","offers":[{"title":"Default Title","offer_id":42839826858078,"sku":"CAL-132662A","price":243.32,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0663\/7151\/8558\/files\/caleffi-132-series-quicksetter-balancing-valve.jpg?v=1781057417"},{"product_id":"cal-132772ac","title":"Caleffi QuickSetter 1-1\/4 - QuickSetter Balancing Valve, 1-1\/4\"","description":"\u003cdiv style=\"font-family: Arial, sans-serif; font-size: 15px; color: #333333; line-height: 1.6;\"\u003e\n  \u003cp\u003e\n    The \u003cstrong\u003eCaleffi QuickSetter™ 132 Series\u003c\/strong\u003e static balancing valve accurately sets and monitors the flow rate of heating and cooling transfer fluid supplied to fan coils, terminal units, and closed hydronic loops. Proper hydronic system balancing ensures the mechanical system operates cleanly according to engineering design specs, delivering targeted building thermal comfort while maximizing energy efficiency across the facility plant.\n  \u003c\/p\u003e\n  \u003cp style=\"margin-top: 15px;\"\u003e\n    The onboard flow meter features an integrated bypass circuit built directly into the brass valve body, keeping the internal flow path completely isolated and shut off during normal operating conditions. This design prevents fouling, scale buildup, and system debris from clogging the gauge window. Pulling the visual indicator ring instantly activates the bypass circuit to give an accurate, cloud-free GPM flow scale readout—allowing fast loop balancing without requiring expensive digital differential pressure gauges or reference charts.\n  \u003c\/p\u003e\n\u003c\/div\u003e","brand":"Caleffi","offers":[{"title":"Default Title","offer_id":42839826890846,"sku":"CAL-132772A","price":413.31,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0663\/7151\/8558\/files\/caleffi-132-series-quicksetter-balancing-valve.jpg?v=1781057417"},{"product_id":"caleffi-discal-1-1-2-inch-sweat-air-separator","title":"Caleffi DISCAL 1-1\/2 - DISCAL Air Separator, 1-1\/2\" Sweat","description":"\u003cdiv style=\"font-family: Arial, sans-serif; font-size: 15px; color: #333333; line-height: 1.6;\"\u003e\n  \u003cp\u003e\n    The \u003cstrong\u003eCaleffi DISCAL® 551 Series\u003c\/strong\u003e air separator continuously extracts micro-bubbles of entrained air from closed hydronic heating and cooling loops. By dropping fluid velocity inside its specially shaped brass body, it allows minuscule air pockets to coalesce, break free from the system media, and vent automatically into the atmosphere.\n  \u003c\/p\u003e\n  \u003cp style=\"margin-top: 15px;\"\u003e\n    Equipped with a glass-reinforced nylon internal element, the DISCAL creates a high-performance swirling matrix that captures 100% of trapped system air down to the micro-bubble level. Eliminating oxygen loop-circulation provides premium component protection—preventing mechanical pump noise, reducing terminal unit corrosion, and optimizing boiler plant heat transfer efficiency.\n  \u003c\/p\u003e\n\u003c\/div\u003e","brand":"Caleffi","offers":[{"title":"Default Title","offer_id":42873369133150,"sku":"CAL-551006A","price":266.12,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0663\/7151\/8558\/files\/aleffi-discal-1-half-inch-brass-air-separator.jpg?v=1781118199"},{"product_id":"caleffi-discal-3-inch","title":"Caleffi DiscalDirt 546 - DiscalDirt Series 546 Brass Air and Dirt Separator, 1-1\/4\" NPT","description":"\u003cp\u003eThe \u003cstrong\u003eCaleffi DiscalDirt 546096A\u003c\/strong\u003e is a premier heavy-duty, dual-action combination air and dirt separator designed engineered to protect commercial and high-end residential hydronic loop infrastructure. By combining an internal micro-bubble coalescing mesh with a low-velocity lower settling zone, it simultaneously purges 100% of entrained micro-bubbles and eliminates particulate matter down to 5 microns.\u003c\/p\u003e\n\n\u003cp\u003eConstructed from durable, corrosion-resistant brass, this 1-1\/4\" NPT unit dramatically minimizes maintenance requirements, guards expensive circulator pumps from cavitation, and eliminates air locks across active heating and cooling systems.\u003c\/p\u003e","brand":"Caleffi","offers":[{"title":"Default Title","offer_id":42913098629214,"sku":"EXP-3INCH-1061","price":257.1,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0663\/7151\/8558\/files\/Caleffi_Discal_NA551080A_3_inch_flanged_air_separator_featuring_a_large_steel_cylindrical_body_finished_in_a_durable_green_epoxy_resin_coat_with_a_top-mounted_brass_air_vent..jpg?v=1782053106"},{"product_id":"caleffi-535061ha-1-5-inch","title":"Caleffi 5350 - Series 5350 Adjustable Pressure Reducing Valve, 1.5\" NPT","description":"\u003cp\u003eThe \u003cstrong\u003eCaleffi 5350 Series Prescal\u003c\/strong\u003e is a commercial-grade, high-performance adjustable pressure reducing valve engineered to control and stabilize high incoming pressures from public water mains. Designed to protect downstream infrastructure from thermal stress, pipe hammering, and appliance degradation, this premium PRV provides whisper-quiet performance across municipal, institutional, and high-volume commercial plumbing networks.\u003c\/p\u003e\n\n\u003ch3\u003eIntelligent Pre-Adjustment \u0026amp; Visual Scale\u003c\/h3\u003e\n\u003cp\u003eThe 5350 Series features Caleffi's signature top-mounted operating knob integrated with an explicit, double-sided pressure setting indicator scale. This mechanical configuration allows mechanical contractors to pre-set the precise desired downstream pressure target completely prior to installing the unit into the pipe lines. Once fluid pressure enters the valve, the internal balanced seat architecture continuously counters upstream pressure fluctuations, holding the downstream environment completely steady.\u003c\/p\u003e\n\n\u003ch3\u003eAdvanced Serviceability Features\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eRemovable Self-Contained Unit Cartridge:\u003c\/strong\u003e Complete inspection, mesh cleaning, and internal maintenance cycles can be completed in seconds by extracting the complete top-loaded core cartridge without cutting the valve housing from the piping layout.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDezincification-Resistant low-lead Construction:\u003c\/strong\u003e Cast from a specialized robust brass compound specifically formulated to limit scaling, maximize structural longevity, and handle hard or highly aggressive hot water loops flawlessly.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eContoured Internal Control Diaphragm:\u003c\/strong\u003e Built with a specialized custom-shaped rubber profile that maximizes regulation accuracy while dampening vibration and resisting severe pressure surges.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003e\u003cem\u003eLooking for exact pressure drop curves or localized union dimensional metrics? \u003ca href=\"\/pages\/contact-us\" title=\"Request Official Caleffi Submittal\"\u003eClick here to request the official factory submittal manuals from our engineering desk.\u003c\/a\u003e\u003c\/em\u003e\u003c\/p\u003e","brand":"Caleffi","offers":[{"title":"Default Title","offer_id":43050609868894,"sku":"535060A","price":276.51,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0663\/7151\/8558\/files\/Caleffi_5350_Prescal_series_adjustable_pressure_reducing_valve_with_heavy_low-lead_brass_body_integrated_mechanical_pressure_gauge_and_premium_polymer_control_knob..jpg?v=1782048308"},{"product_id":"caleffi-551007a","title":"Caleffi Discal 1.25 - Discal High-Efficiency Air Separator, 1.25\" NPT","description":"\u003cdiv style=\"font-family: Arial, sans-serif; font-size: 15px; color: #333333; line-height: 1.6;\"\u003e\n  \u003cp\u003e\n    The \u003cstrong\u003eCaleffi Discal 1.25 NPT High-Efficiency Air Separator (551007A)\u003c\/strong\u003e is a high-performance system component engineered to deliver premium fluid distribution efficiency and reliability. Built with a heavy-duty brass housing, this unit provides exceptional durability and outstanding resistance to demanding system environments. Its low-maintenance, high-performance architecture makes it an ideal solution for hydronic heating and cooling configurations.\n  \u003c\/p\u003e\n  \u003cp style=\"margin-top: 15px;\"\u003e\n    Engineered to continuously clear entrained micro-bubbles down to a macroscopic level, the DISCAL 551 series purges accumulated system air with minimal head loss across the circuit layout. Inside the primary chamber, an advanced glass-reinforced nylon internal element coalescing assembly slows internal flow velocity, forcing hidden micro-bubbles to aggregate, float upward, and automatically escape via its high-capacity automatic atmospheric air vent structure. This full de-aeration cycle dramatically mitigates ongoing line chatter noise, stops oxygen-driven localized pipe corrosion, eliminates cavitation damage inside commercial circulator assemblies, and lowers recurring call-backs.\n  \u003c\/p\u003e\n\u003c\/div\u003e","brand":"Caleffi","offers":[{"title":"Default Title","offer_id":42913135722590,"sku":"1110","price":266.07,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0663\/7151\/8558\/files\/Caleffi_Discal_1.25_NPT_High-Efficiency_Air_Separator_heavy-duty_commercial_hydronic_system_component..webp?v=1782009657"},{"product_id":"caleffi-535061ha","title":"Caleffi 5350 - Series 5350 Adjustable Pressure Reducing Valve, 1\" NPT","description":"\u003cdiv style=\"font-family: Arial, sans-serif; font-size: 15px; color: #333333; line-height: 1.6;\"\u003e\n  \u003cp\u003e\n    The \u003cstrong\u003eCaleffi 5350 Series 1-Inch NPT Adjustable Pressure Reducing Valve (535061HA)\u003c\/strong\u003e is a high-performance system component engineered to deliver premium fluid distribution efficiency and reliability. Built with a heavy-duty low-lead brass housing, this unit provides exceptional durability and outstanding resistance to demanding system environments. Its low-maintenance, high-performance architecture makes it an ideal solution for balancing and protecting commercial structural plumbing networks.\n  \u003c\/p\u003e\n  \u003cp style=\"margin-top: 15px;\"\u003e\n    Featuring an innovative, pre-adjustable dial mechanism layout, the PresCal 5350 series allows mechanical installers to set the desired baseline delivery pressure before the valve is physically piped into the utility lines. Its balanced seat architecture ensures the downstream system pressure remains perfectly stable, completely ignoring massive upstream pressure fluctuations from municipal water mains. The internal regulating elements are engineered as a fully self-contained, removable cartridge assembly to make periodic service checks or line flushing straightforward, while a premium low-adhesion internal control stem housing actively prevents performance failures caused by limescale and hard-water deposit tracking.\n  \u003c\/p\u003e\n\u003c\/div\u003e","brand":"Caleffi","offers":[{"title":"Default Title","offer_id":42913135951966,"sku":"1120","price":218.3,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0663\/7151\/8558\/files\/Caleffi_5350_Series_1-Inch_NPT_Adjustable_Pressure_Reducing_Valve_heavy-duty_commercial_hydronic_system_component..webp?v=1782009315"},{"product_id":"caleffi-502640-128394","title":"Caleffi 502640 - 1\/2\" Air Vent For Hydrolink Series Only","description":"\u003cp\u003e1\/2\" Air Vent For Hydrolink Series Only\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eManufacturer: Caleffi\u003c\/li\u003e\n\u003cli\u003ePart #: 502640\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Caleffi","offers":[{"title":"Default Title","offer_id":67685861949534,"sku":"MP-128394","price":25.88,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0663\/7151\/8558\/files\/00380934.jpg?v=1793968578"},{"product_id":"caleffi-520510ax-351214","title":"Caleffi 520510AX - Mixcal 3-Way Mixing Valve 3\/4\"FNPT tankhosecross3\/4\" Mnptw\/Gage","description":"\u003cp\u003eMixcal 3-Way Mixing Valve 3\/4\"FNPT tankhosecross3\/4\" Mnptw\/Gage\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eManufacturer: Caleffi\u003c\/li\u003e\n\u003cli\u003ePart #: 520510AX\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Caleffi","offers":[{"title":"Default Title","offer_id":67685885280350,"sku":"MP-351214","price":288.72,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0663\/7151\/8558\/files\/00380939.jpg?v=1793968604"},{"product_id":"caleffi-502043a-290864","title":"Caleffi 502043A - 1\/2\" NPT Male High Capacity Air Vent Minical","description":"\u003cp\u003e1\/2\" NPT Male High Capacity Air Vent Minical\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eManufacturer: Caleffi\u003c\/li\u003e\n\u003cli\u003ePart #: 502043A\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Caleffi","offers":[{"title":"Default Title","offer_id":67686960758878,"sku":"MP-290864","price":27.71,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0663\/7151\/8558\/files\/00380929.jpg?v=1793969319"},{"product_id":"caleffi-521419ac-321735","title":"Caleffi 521419AC - 1\/2\" Sweat Thermostatic Mixing Valve W\/Checkslow Lead Brassw\/Adapter And Temp Gauge 85-150F","description":"\u003cp\u003e1\/2\" Sweat Thermostatic Mixing Valve W\/Checkslow Lead Brassw\/Adapter And Temp Gauge 85-150F\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eManufacturer: Caleffi\u003c\/li\u003e\n\u003cli\u003ePart #: 521419AC\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Caleffi","offers":[{"title":"Default Title","offer_id":67687381827678,"sku":"MP-321735","price":226.8,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0663\/7151\/8558\/files\/00380944.jpg?v=1793969440"},{"product_id":"caleffi-501502a-114839","title":"Caleffi 501502A - Extra Hi Capacity Air Vent 3\/4\" NPT For NA548 \u0026 NA549 Series","description":"\u003cp\u003eExtra Hi Capacity Air Vent 3\/4\" NPT For NA548 \u0026amp; 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