{"product_id":"valvula-bola-3-vias-ss316-rosca-npt","title":"3-Way Ball Valve SS316 NPT Thread | Diverter \u0026 Mixing | L and T Port","description":"\u003ch2\u003e3-Way Ball Valve in 316 Stainless Steel — NPT Thread, Diverter and Mixer, L and T Port\u003c\/h2\u003e\n\n\u003cp\u003e\n  The \u003cstrong\u003e3-way SS316 ball valve with NPT thread\u003c\/strong\u003e solves in a single threaded component what would normally require two 2-way valves: with a single ball and a 90° turn, it diverts flow between two alternative destinations (L port) or mixes two fluids into a single outlet (T port). Its design combines a \u003cstrong\u003emonoblock central body\u003c\/strong\u003e that houses the ball and seats as a single integral piece, with \u003cstrong\u003ethree individually removable NPT threaded ends\u003c\/strong\u003e — each port can be independently removed for inspection or maintenance without affecting the other two ports or removing the central body from the line.\n\u003c\/p\u003e\n\u003cp\u003e\n  Available in diameters from ½\" to 3\" with PTFE seat, integrated ISO 5211 mounting pad for automation, and NPT thread on all three connection ports.\n\u003c\/p\u003e\n\n\u003ch3\u003eL Port vs. T Port — specify the correct one before ordering\u003c\/h3\u003e\n\u003cp\u003e\n  The L port and T port have completely different behaviors. This is the most important data when ordering this valve:\n\u003c\/p\u003e\n\n\u003ch4\u003eL Port — Diversion between Two Destinations or Selection between Two Sources\u003c\/h4\u003e\n\u003cp\u003e\n  The L port ball always connects only two of the three ports — never all three simultaneously.\n\u003c\/p\u003e\n\u003cul\u003e\n\n  \u003cli\u003e\n\n\u003cstrong\u003e0° Position:\u003c\/strong\u003e Port A connected to Port B. Port C blocked.\u003c\/li\u003e\n\n  \u003cli\u003e\n\n\u003cstrong\u003e90° Position:\u003c\/strong\u003e Port A connected to Port C. Port B blocked.\u003c\/li\u003e\n\n\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eUse L port for:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\n  \u003cli\u003eFlow diversion between two destinations — send fluid to tank A or tank B\u003c\/li\u003e\n\n  \u003cli\u003eSelection between two supply sources — feed from the main line or the backup line\u003c\/li\u003e\n\n  \u003cli\u003eEquipment bypass — send through equipment or through direct bypass\u003c\/li\u003e\n\n  \u003cli\u003eDual feed systems — instantaneous switching without flow interruption\u003c\/li\u003e\n\n\n\u003c\/ul\u003e\n\n\u003ch4\u003eT Port — Mixing, Simultaneous Distribution or Recirculation\u003c\/h4\u003e\n\u003cp\u003e\n  The T port ball in the central position connects all three ports simultaneously. In extreme positions, it connects only two.\n\u003c\/p\u003e\n\u003cul\u003e\n\n  \u003cli\u003e\n\n\u003cstrong\u003e0° Position (central):\u003c\/strong\u003e Ports A, B and C connected simultaneously\u003c\/li\u003e\n\n  \u003cli\u003e\n\n\u003cstrong\u003e90° Position:\u003c\/strong\u003e Port A with Port B only\u003c\/li\u003e\n\n  \u003cli\u003e\n\n\u003cstrong\u003e-90° Position:\u003c\/strong\u003e Port A with Port C only\u003c\/li\u003e\n\n\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eUse T port for:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\n  \u003cli\u003eMixing two fluids — combine two streams into a single outlet\u003c\/li\u003e\n\n  \u003cli\u003eRecirculation vs. process — recirculate to the source tank or send to process\u003c\/li\u003e\n\n  \u003cli\u003eDistribution to two destinations with simultaneous position at start-up\u003c\/li\u003e\n\n\n\u003c\/ul\u003e\n\u003cp\u003e\n  \u003cem\u003eNot sure which port you need? Consult us before ordering — it's the most frequent specification error in 3-way valves.\u003c\/em\u003e\n\u003c\/p\u003e\n\n\u003ch3\u003eBody design — central monoblock with removable NPT ends\u003c\/h3\u003e\n\u003cp\u003e\n  The design of this valve combines the advantages of the monoblock body with the ease of maintenance of removable designs:\n\u003c\/p\u003e\n\u003cul\u003e\n\n  \u003cli\u003e\n\n    \u003cstrong\u003eMonoblock central body:\u003c\/strong\u003e The ball, seats, and seals are contained in the single-piece central body without internal mechanical joints. There are no gaskets between body parts that could be leakage points under pressure or vibration — structural integrity is maximized.\n  \u003c\/li\u003e\n\n  \u003cli\u003e\n\n    \u003cstrong\u003eThree individually removable NPT ends:\u003c\/strong\u003e Each of the three connection ports is a threaded end that screws into the central body and can be completely independently removed — without affecting the other two ports. When one end is removed, the corresponding port becomes accessible for inspection, cleaning, or connection to a different pipe, while the other two remain installed and sealed.\n  \u003c\/li\u003e\n\n  \u003cli\u003e\n\n    \u003cstrong\u003eMaintenance without removing the body from the line:\u003c\/strong\u003e If the seats require inspection or replacement, the three ends are removed and the central body becomes fully accessible — without cutting pipes or disassembling permanent connections. Once checked, the ends are reinstalled with PTFE tape or thread sealant.\n  \u003c\/li\u003e\n\n  \u003cli\u003e\n\n    \u003cstrong\u003eReconfiguration flexibility:\u003c\/strong\u003e The three removable NPT ends allow changing the orientation of the ports or connection to different pipe diameters simply by replacing the corresponding end — without replacing the entire valve.\n  \u003c\/li\u003e\n\n\n\u003c\/ul\u003e\n\n\u003ch3\u003eConstruction materials\u003c\/h3\u003e\n\u003cul\u003e\n\n  \u003cli\u003e\n\n\u003cstrong\u003eCentral body:\u003c\/strong\u003e Monoblock in SS316 stainless steel — ball and seats in a single integral piece without internal gaskets\u003c\/li\u003e\n\n  \u003cli\u003e\n\n\u003cstrong\u003eConnection ends:\u003c\/strong\u003e Three individually removable NPT threaded ends in SS316\u003c\/li\u003e\n\n  \u003cli\u003e\n\n\u003cstrong\u003eBall:\u003c\/strong\u003e SS316 stainless steel with L or T port as specified, mirror-polished finish\u003c\/li\u003e\n\n  \u003cli\u003e\n\n\u003cstrong\u003eStem:\u003c\/strong\u003e SS316 stainless steel with PTFE packing\u003c\/li\u003e\n\n  \u003cli\u003e\n\n\u003cstrong\u003eSeats:\u003c\/strong\u003e Virgin PTFE — tight seal without leaks in every operating position\u003c\/li\u003e\n\n  \u003cli\u003e\n\n\u003cstrong\u003eConnection:\u003c\/strong\u003e NPT tapered thread (ANSI B1.20.1) on all three ports\u003c\/li\u003e\n\n  \u003cli\u003e\n\n\u003cstrong\u003eLever:\u003c\/strong\u003e SS316 stainless steel with locking position at each extreme position\u003c\/li\u003e\n\n  \u003cli\u003e\n\n\u003cstrong\u003eActuator mounting pad:\u003c\/strong\u003e Integrated ISO 5211\u003c\/li\u003e\n\n\n\u003c\/ul\u003e\n\n\u003ch3\u003eTechnical specifications\u003c\/h3\u003e\n\u003cul\u003e\n\n  \u003cli\u003e\n\n\u003cstrong\u003eType:\u003c\/strong\u003e Floating quarter-turn ball, 3-way\u003c\/li\u003e\n\n  \u003cli\u003e\n\n\u003cstrong\u003eBody design:\u003c\/strong\u003e Central monoblock with three removable NPT ends\u003c\/li\u003e\n\n  \u003cli\u003e\n\n\u003cstrong\u003eBall configuration:\u003c\/strong\u003e L port (diverter\/selector) or T port (mixer\/distributor) — specify when ordering\u003c\/li\u003e\n\n  \u003cli\u003e\n\n\u003cstrong\u003eBody material:\u003c\/strong\u003e SS316 stainless steel\u003c\/li\u003e\n\n  \u003cli\u003e\n\n\u003cstrong\u003eBall:\u003c\/strong\u003e Polished SS316\u003c\/li\u003e\n\n  \u003cli\u003e\n\n\u003cstrong\u003eStem:\u003c\/strong\u003e SS316\u003c\/li\u003e\n\n  \u003cli\u003e\n\n\u003cstrong\u003eSeats:\u003c\/strong\u003e Virgin PTFE\u003c\/li\u003e\n\n  \u003cli\u003e\n\n\u003cstrong\u003eConnection:\u003c\/strong\u003e NPT tapered thread (ANSI B1.20.1) — three ports with removable ends\u003c\/li\u003e\n\n  \u003cli\u003e\n\n\u003cstrong\u003eDiameters in stock:\u003c\/strong\u003e ½\" (DN15), ¾\" (DN20), 1\" (DN25), 1½\" (DN40), 2\" (DN50), 3\" (DN80)\u003c\/li\u003e\n\n  \u003cli\u003e\n\n\u003cstrong\u003eNominal pressure:\u003c\/strong\u003e Up to PN64 at ambient temperature\u003c\/li\u003e\n\n  \u003cli\u003e\n\n\u003cstrong\u003eOperating temperature:\u003c\/strong\u003e -20 °C to +180 °C with PTFE seat\u003c\/li\u003e\n\n  \u003cli\u003e\n\n\u003cstrong\u003eActuator travel:\u003c\/strong\u003e 90° between extreme positions\u003c\/li\u003e\n\n  \u003cli\u003e\n\n\u003cstrong\u003eActuator mounting pad:\u003c\/strong\u003e ISO 5211\u003c\/li\u003e\n\n\n\u003c\/ul\u003e\n\n\u003ch3\u003eComparison — diverter and mixer with 3-way valve vs. two 2-way valves\u003c\/h3\u003e\n\u003ctable\u003e\n\n  \u003cthead\u003e\n\n    \u003ctr\u003e\n\n      \u003cth\u003eCriterion\u003c\/th\u003e\n\n      \u003cth\u003e3-Way Valve ← This product\u003c\/th\u003e\n\n      \u003cth\u003eTwo coordinated 2-way valves\u003c\/th\u003e\n\n    \u003c\/tr\u003e\n\n  \u003c\/thead\u003e\n\n  \u003ctbody\u003e\n\n    \u003ctr\u003e\n\n      \u003ctd\u003eNumber of components\u003c\/td\u003e\n\n      \u003ctd\u003e✅ Single valve\u003c\/td\u003e\n\n      \u003ctd\u003eTwo valves + interlock logic\u003c\/td\u003e\n\n    \u003c\/tr\u003e\n\n    \u003ctr\u003e\n\n      \u003ctd\u003eThreaded connections in the line\u003c\/td\u003e\n\n      \u003ctd\u003e✅ Three NPT connections\u003c\/td\u003e\n\n      \u003ctd\u003eFour NPT connections (two per valve)\u003c\/td\u003e\n\n    \u003c\/tr\u003e\n\n    \u003ctr\u003e\n\n      \u003ctd\u003eInstantaneous switching without interruption\u003c\/td\u003e\n\n      \u003ctd\u003e✅ One 90° turn — simultaneous\u003c\/td\u003e\n\n      \u003ctd\u003eClose one + open another — sequential\u003c\/td\u003e\n\n    \u003c\/tr\u003e\n\n    \u003ctr\u003e\n\n      \u003ctd\u003eRisk of period with both circuits open\u003c\/td\u003e\n\n      \u003ctd\u003e✅ Impossible — ball geometry prevents it\u003c\/td\u003e\n\n      \u003ctd\u003ePossible if control logic fails\u003c\/td\u003e\n\n    \u003c\/tr\u003e\n\n    \u003ctr\u003e\n\n      \u003ctd\u003eActuators required for automation\u003c\/td\u003e\n\n      \u003ctd\u003e✅ Only one\u003c\/td\u003e\n\n      \u003ctd\u003eTwo + coordination logic\u003c\/td\u003e\n\n    \u003c\/tr\u003e\n\n    \u003ctr\u003e\n\n      \u003ctd\u003eInstallation space\u003c\/td\u003e\n\n      \u003ctd\u003e✅ Compact — one valve at the diversion point\u003c\/td\u003e\n\n      \u003ctd\u003eLarger — two valves in separate locations\u003c\/td\u003e\n\n    \u003c\/tr\u003e\n\n    \u003ctr\u003e\n\n      \u003ctd\u003eTotal cost\u003c\/td\u003e\n\n      \u003ctd\u003e✅ Lower in most cases\u003c\/td\u003e\n\n      \u003ctd\u003eHigher — two valves + two actuators\u003c\/td\u003e\n\n    \u003c\/tr\u003e\n\n  \u003c\/tbody\u003e\n\n\n\u003c\/table\u003e\n\n\u003ch3\u003eChemical compatibility of SS316\u003c\/h3\u003e\n\u003cul\u003e\n\n  \u003cli\u003e✅ Drinking water, process water, demineralized water, reverse osmosis water\u003c\/li\u003e\n\n  \u003cli\u003e✅ Seawater up to 1,000 ppm chlorides at ambient temperature\u003c\/li\u003e\n\n  \u003cli\u003e✅ Natural gas, LPG, nitrogen, CO₂, compressed air, and industrial gases\u003c\/li\u003e\n\n  \u003cli\u003e✅ Sulfuric acid H₂SO₄ up to 10%, HCl up to 10%, HNO₃ up to 20%\u003c\/li\u003e\n\n  \u003cli\u003e✅ NaOH up to 20%, aqueous ammonia up to 28%\u003c\/li\u003e\n\n  \u003cli\u003e✅ Alcohols, acetates, and low-aggressiveness organic solvents\u003c\/li\u003e\n\n  \u003cli\u003e✅ Vegetable oils and light mineral oils\u003c\/li\u003e\n\n  \u003cli\u003e✅ Low-pressure steam up to 150 °C\u003c\/li\u003e\n\n  \u003cli\u003e⚠️ Chlorides \u0026gt;1,000 ppm at elevated temperature — risk of pitting in SS316\u003c\/li\u003e\n\n  \u003cli\u003e❌ HF, H₂SO₄ \u0026gt;30%, concentrated ClO₂: use \u003ca href=\"\/en\/collections\/valvulas-de-bola-anticorrosivas-interiores-de-pfa\"\u003ePFA anti-corrosion valve →\u003c\/a\u003e\n\n\u003c\/li\u003e\n\n\n\u003c\/ul\u003e\n\n\u003ch3\u003eAutomation — ISO 5211 for quarter-turn\u003c\/h3\u003e\n\u003cp\u003e\n  The ISO 5211 mounting pad allows direct mounting of pneumatic or electric quarter-turn actuators. Specific considerations for automating 3-way valves:\n\u003c\/p\u003e\n\u003cul\u003e\n\n  \u003cli\u003e\n\n    \u003cstrong\u003eDefine fail-safe position before ordering:\u003c\/strong\u003e The single-acting actuator moves the valve to a predefined position (A or B) upon loss of air or signal. Define which circuit should remain active in case of failure — this decision determines the NC or NO configuration and the mounting position of the actuator.\n  \u003c\/li\u003e\n\n  \u003cli\u003e\n\n    \u003cstrong\u003eDo not use in intermediate position:\u003c\/strong\u003e The 3-way valve is an ON\/OFF component — operate only between the two extreme positions (0° and 90°). For continuous proportional mixing, use a 3-way globe valve with a positioner.\n  \u003c\/li\u003e\n\n  \u003cli\u003e\n\n    \u003cstrong\u003eOperating torque in large diameters:\u003c\/strong\u003e In 2\" and 3\" with high process pressures, verify that the selected actuator has sufficient torque — the required torque is greater than in the 2-way ball of the same diameter due to the geometry of the L or T ball.\n  \u003c\/li\u003e\n\n\n\u003c\/ul\u003e\n\u003cul\u003e\n\n  \u003cli\u003e\u003ca href=\"\/en\/collections\/valvulas-bola-con-actuador-neumatico\"\u003eSee ball valve sets with pneumatic actuator →\u003c\/a\u003e\u003c\/li\u003e\n\n  \u003cli\u003e\u003ca href=\"\/en\/collections\/valvulas-bola-con-actuador-electrico\"\u003eSee ball valve sets with electric actuator →\u003c\/a\u003e\u003c\/li\u003e\n\n\n\u003c\/ul\u003e\n\n\u003ch3\u003eMain applications\u003c\/h3\u003e\n\u003cul\u003e\n\n  \u003cli\u003e\n\n    \u003cstrong\u003eInstrumentation and manifolds:\u003c\/strong\u003e The most frequent application of threaded 3-way valves in Mexico. Selection of reference source in instrumentation manifolds, diversion between two measuring instruments for calibration without interrupting the process, bypass of instrumentation filters. The compact ½\" and ¾\" format is standard in these services.\n  \u003c\/li\u003e\n\n  \u003cli\u003e\n\n    \u003cstrong\u003eGas and industrial gas distribution:\u003c\/strong\u003e Selection between two supply lines for natural gas, nitrogen, CO₂, or LPG in installations with main and backup sources. The L port SS316 with NPT thread is installed directly on existing connections.\n  \u003c\/li\u003e\n\n  \u003cli\u003e\n\n    \u003cstrong\u003ePurified water and reverse osmosis systems:\u003c\/strong\u003e Diversion between purified water distribution circuits, selection between production source and storage tank, bypass of cartridge filters. SS316 does not contaminate the water with metal ions.\n  \u003c\/li\u003e\n\n  \u003cli\u003e\n\n    \u003cstrong\u003eChemical industry — reagent selection and diversion:\u003c\/strong\u003e Selection between two alternative reagents for addition to the same process point, diversion of product between two storage destinations. The NPT thread in SS316 covers the chemical compatibility of the most frequent aqueous reagents.\n  \u003c\/li\u003e\n\n  \u003cli\u003e\n\n    \u003cstrong\u003eLaboratories and analysis facilities:\u003c\/strong\u003e Selection between two samples or two reference sources in online analysis systems, bypass of measuring cells for calibration without interrupting the analytical process. The compact ½\" format is standard in these installations.\n  \u003c\/li\u003e\n\n  \u003cli\u003e\n\n    \u003cstrong\u003eMixing of aqueous fluids (T port):\u003c\/strong\u003e Combination of two aqueous streams at fixed proportions at a single mixing point — hot and cold water, two solutions of different concentrations, process water and adjustment reagent. The central position of the T port simultaneously connects all three ports for continuous mixing.\n  \u003c\/li\u003e\n\n  \u003cli\u003e\n\n    \u003cstrong\u003eHVAC — circuit selection:\u003c\/strong\u003e Diversion between cold or hot water distribution circuits in HVAC systems where the threaded 3-way valve is more economical than the flanged version. The 24 VDC electric actuator integrates directly with the building's BMS system.\n  \u003c\/li\u003e\n\n\n\u003c\/ul\u003e\n\n\u003cp\u003e\n  For the complete range of 3-way ball valves, see \u003ca href=\"\/en\/collections\/valvulas-de-bola-3-vias\"\u003e3-way ball valve category →\u003c\/a\u003e\n\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003ca rel=\"noopener\" title=\"Technical Data Sheet 3-Way Ball Valve L,T Type NPT Thread Stainless Steel Cematic\" href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0555\/3917\/1508\/files\/valvula-de-bola-acero-inoxidable-ss316-rosca-npt-3-vias-pbt04.pdf?v=1745261498\" target=\"_blank\"\u003e\u003cspan style=\"color: #bc1515;\"\u003e\u003cstrong\u003eTechnical Data Sheet\u003c\/strong\u003e\u003c\/span\u003e\u003c\/a\u003e\u003c\/p\u003e\n\u003cp\u003e\u003ca rel=\"noopener\" title=\"3-way port configuration\" href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0555\/3917\/1508\/files\/configuracion-valvulas-de-bola-3-vias.pdf?v=1743635646\" target=\"_blank\"\u003e\u003cspan style=\"color: #bc1515;\"\u003e\u003cstrong\u003eConfiguration\u003c\/strong\u003e\u003c\/span\u003e\u003c\/a\u003e\u003c\/p\u003e","brand":"Cematic","offers":[{"title":"1\/2\" \/ L","offer_id":39475273466036,"sku":"PBT0404","price":860.41,"currency_code":"MXN","in_stock":true},{"title":"3\/4\" \/ L","offer_id":41266530648244,"sku":"PBT0405","price":1039.13,"currency_code":"MXN","in_stock":true},{"title":"1\" \/ L","offer_id":41266530681012,"sku":"PBT0406","price":1504.36,"currency_code":"MXN","in_stock":true},{"title":"1 1\/4\" \/ L","offer_id":41266596348084,"sku":"PBT0407","price":2274.06,"currency_code":"MXN","in_stock":true},{"title":"1 1\/2\" \/ L","offer_id":41266530713780,"sku":"PBT0408","price":4101.75,"currency_code":"MXN","in_stock":false},{"title":"2\" \/ L","offer_id":41266530746548,"sku":"PBT0410","price":5061.85,"currency_code":"MXN","in_stock":true},{"title":"2 1\/2\" \/ L","offer_id":41266596380852,"sku":"PBT0412","price":8706.45,"currency_code":"MXN","in_stock":true},{"title":"3\" \/ L","offer_id":41266530779316,"sku":"PBT0414","price":13487.19,"currency_code":"MXN","in_stock":true},{"title":"1\/2\" \/ T","offer_id":44228431216953,"sku":"PBT1404","price":782.27,"currency_code":"MXN","in_stock":true},{"title":"3\/4\" \/ T","offer_id":44228431249721,"sku":"PBT1405","price":1143.32,"currency_code":"MXN","in_stock":true},{"title":"1\" \/ T","offer_id":44228431282489,"sku":"PBT1406","price":1504.36,"currency_code":"MXN","in_stock":true},{"title":"1 1\/2\" \/ T","offer_id":44228431348025,"sku":"PBT1408","price":3729.03,"currency_code":"MXN","in_stock":true},{"title":"2\" \/ T","offer_id":44228431380793,"sku":"PBT1410","price":5061.85,"currency_code":"MXN","in_stock":true},{"title":"2 1\/2\" \/ T","offer_id":44228431413561,"sku":"PBT1412","price":10466.78,"currency_code":"MXN","in_stock":true},{"title":"3\" \/ T","offer_id":44228431446329,"sku":"PBT1414","price":14795.76,"currency_code":"MXN","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0555\/3917\/1508\/files\/valvula-3-vias-ss-316-rosca-npt.jpg?v=1755097872","url":"https:\/\/cematic.com.mx\/en\/products\/valvula-bola-3-vias-ss316-rosca-npt","provider":"Cematic","version":"1.0","type":"link"}