{"product_id":"reg359","title":"Scubapro MK25 EVO DIN 300\/S620 Ti Regulator - REG359 DIN","description":"\u003ch2\u003eScubapro MK25 EVO DIN 300\/S620 Ti Regulator - REG359 DIN\u003cbr\u003e\n\u003c\/h2\u003e\n\u003cp\u003eSCUBAPRO's top regulator technology is on display in this high-tech, ultralight reg system. The MK25T EVO is machined from a solid block of titanium which will not corrode, even in concentrated saltwater conditions, promising years of trouble-free use. It offers excellent resistance to freezing, superb inhalation sensitivity and instant delivery of air on demand. The new S620 X-Ti embraces the best features of SCUBAPRO's renowned S600 in an upgraded, state-of-the-art design. Smaller and lighter but using the same-sized diaphragm, the S620 X-Ti delivers effortless airflow under all dive conditions. The titanium inlet tube is super-efficient, the large purge button improves water circulation and the new exhaust tee enhances overall performance.\"\u003c\/p\u003e\n\u003ch5\u003eFeatures\u003c\/h5\u003e\n\u003cul\u003e\n\u003cli\u003eHigh Performance, Reliable Scubapro Technology \u0026amp; Value\u003c\/li\u003e\n\u003cli\u003eSuperior Ultra-High Airflow System\u003c\/li\u003e\n\u003cli\u003eMaximum Performance in All-Temperatures \u0026amp; Conditions\u003c\/li\u003e\n\u003cli\u003e3\/8 Threaded Low-Pressure Hose\u003c\/li\u003e\n\u003cli\u003eMore Air On-Each Inhalation\u003c\/li\u003e\n\u003cli\u003eNitrox Compatible Up to 40% Oxygen\u003c\/li\u003e\n\u003cli\u003e\u003cb\u003eScubapro Mark 25 EVO Regulator DIN, First Stage:\u003c\/b\u003e\u003c\/li\u003e\n\u003cli\u003eSuperior Cold-Water Performance Equal to Scubapro's MK17 First Stage\u003c\/li\u003e\n\u003cli\u003eEVO: Means Evolution, Revolutionizing Existing Technologies to Higher Performance\u003c\/li\u003e\n\u003cli\u003eHigh Performance, Reliable Scubapro Technology and Value\u003c\/li\u003e\n\u003cli\u003eSuperior Ultra-High Airflow System, Maximum Performance in All-Temperatures \u0026amp; Conditions\u003c\/li\u003e\n\u003cli\u003eUltra-Stable Intermediate Pressure\u003c\/li\u003e\n\u003cli\u003eHigh Performance in Warm and Cold Water to 3336 psi (230 bars)\u003c\/li\u003e\n\u003cli\u003eMeets New EN250-2014 Requirements\u003c\/li\u003e\n\u003cli\u003eCE Approved for 3360 psi (230 bars) in Cold Water Conditions\u003c\/li\u003e\n\u003cli\u003eIncreased Cold Water Efficiency by 30% Over Previous MK25 Regulator\u003c\/li\u003e\n\u003cli\u003eAir-Balanced Flow-Through Piston Design\u003c\/li\u003e\n\u003cli\u003eBalanced Composite\/Stainless Steel Flow-Thru-Piston\u003c\/li\u003e\n\u003cli\u003eHP Ports: Two 7\/16\" Threaded\u003c\/li\u003e\n\u003cli\u003eLP High Flow (HF) Ports: Five 3\/8\" Threaded\u003c\/li\u003e\n\u003cli\u003e\u003cb\u003eScubapro S620 Ti Second Stage Regulator:\u003c\/b\u003e\u003c\/li\u003e\n\u003cli\u003eAir-Balanced Second Stage Valve\u003c\/li\u003e\n\u003cli\u003eSmooths-Out Inhalation Effort at Varying Depths \u0026amp; Supply Pressures\u003c\/li\u003e\n\u003cli\u003eRugged Reinforced Techno-Polymer Case \u0026amp; Front Cover\u003c\/li\u003e\n\u003cli\u003eStainless Steel Frame Looks Good\u003c\/li\u003e\n\u003cli\u003ePlus, Design Able to Withstand Years of Aggressive Diving\u003c\/li\u003e\n\u003cli\u003eFull Titanium Barrel: Rugged, Anti-Corrosion \u0026amp; Lightweight for Long-Term Reliability\u003c\/li\u003e\n\u003cli\u003eLarge Diaphragm Fits Inside More Compact Casing for Maximum Breathing Sensitivity\u003c\/li\u003e\n\u003cli\u003eLP Ports Mounted on Swivel Turret Cap for Maximum Hose Routing\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch5\u003eWhat our Experts Think\u003c\/h5\u003e\n\u003cul\u003e\n\u003cli data-section-id=\"uvloun\" data-start=\"477\" data-end=\"673\"\u003e\n\u003cstrong data-start=\"479\" data-end=\"508\"\u003eElite airflow performance\u003c\/strong\u003e – MK25 EVO piston first stage delivers extremely high gas flow with instant response, even under heavy demand or deep dives. \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\u003cspan aria-hidden=\"true\" class=\"PDq2pG_selectionAnchor\"\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"bmpub8\" data-start=\"674\" data-end=\"866\"\u003e\n\u003cstrong data-start=\"676\" data-end=\"703\"\u003eCold-water ready design\u003c\/strong\u003e – Advanced XTIS thermal insulation improves resistance to freezing and maintains stable performance in harsh environments. \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"13x6ir8\" data-start=\"867\" data-end=\"1048\"\u003e\n\u003cstrong data-start=\"869\" data-end=\"904\"\u003eTitanium second stage advantage\u003c\/strong\u003e – S620 Ti reduces weight while maintaining strength, corrosion resistance, and ultra-smooth inhalation. \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"9j46eb\" data-start=\"1049\" data-end=\"1230\"\u003e\n\u003cstrong data-start=\"1051\" data-end=\"1080\"\u003eEffortless breathing feel\u003c\/strong\u003e – Air-balanced valve design minimizes inhalation resistance for natural, fatigue-free breathing at any depth. \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"hblutt\" data-start=\"1231\" data-end=\"1408\"\u003e\n\u003cstrong data-start=\"1233\" data-end=\"1269\"\u003eHighly configurable hose routing\u003c\/strong\u003e – Swivel turret and multiple LP\/HP ports allow clean, flexible setups for different diving styles. \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"wlpajo\" data-start=\"1409\" data-end=\"1591\"\u003e\n\u003cstrong data-start=\"1411\" data-end=\"1444\"\u003eTravel-friendly premium build\u003c\/strong\u003e – Despite top-end performance, the titanium components help keep overall weight down for easier transport. \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"z4oc91\" data-start=\"1592\" data-end=\"1764\"\u003e\n\u003cstrong data-start=\"1594\" data-end=\"1625\"\u003eAdjustable comfort controls\u003c\/strong\u003e – Fine-tune inhalation effort and Venturi assistance for smooth performance in varying conditions.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch5\u003e\n\u003cbr\u003eQ\u0026amp;A\u003c\/h5\u003e\n\u003cdiv class=\"qMYqUG_convSearchResultHighlightRoot\"\u003e\n\u003cdiv class=\"\" data-turn-id-container=\"request-WEB:010f4f80-e1c1-461f-ba44-5b8fe12e1cff-12\" data-is-intersecting=\"true\"\u003e\n\u003csection class=\"text-token-text-primary w-full focus:outline-none has-data-writing-block:pointer-events-none [\u0026amp;:has([data-writing-block])\u0026gt;*]:pointer-events-auto R6Vx5W_threadScrollVars scroll-mb-[calc(var(--scroll-root-safe-area-inset-bottom,0px)+var(--thread-response-height))] scroll-mt-[calc(var(--header-height)+min(200px,max(70px,20svh)))]\" dir=\"auto\" data-turn-id=\"request-WEB:010f4f80-e1c1-461f-ba44-5b8fe12e1cff-12\" data-turn-id-container=\"request-WEB:010f4f80-e1c1-461f-ba44-5b8fe12e1cff-12\" data-testid=\"conversation-turn-26\" data-turn=\"assistant\"\u003e\n\u003cdiv class=\"text-base my-auto mx-auto pb-10 [--thread-content-margin:var(--thread-content-margin-xs,calc(var(--spacing)*4))] @w-sm\/main:[--thread-content-margin:var(--thread-content-margin-sm,calc(var(--spacing)*6))] @w-lg\/main:[--thread-content-margin:var(--thread-content-margin-lg,calc(var(--spacing)*16))] px-(--thread-content-margin)\"\u003e\n\u003cdiv data-conversation-screenshot-content=\"\" class=\"[--thread-content-max-width:40rem] @w-lg\/main:[--thread-content-max-width:48rem] mx-auto max-w-(--thread-content-max-width) flex-1 group\/turn-messages focus-visible:outline-hidden relative flex w-full min-w-0 flex-col agent-turn\"\u003e\n\u003cdiv class=\"flex max-w-full flex-col gap-4 grow\"\u003e\n\u003cdiv data-message-author-role=\"assistant\" data-message-id=\"fc834860-3f78-42c0-a207-a017c493b0ae\" data-turn-start-message=\"true\" dir=\"auto\" data-message-model-slug=\"gpt-5-3-mini\" class=\"min-h-8 text-message relative flex w-full flex-col items-end gap-2 text-start break-words whitespace-normal outline-none keyboard-focused:focus-ring [.text-message+\u0026amp;]:mt-1\" tabindex=\"0\"\u003e\n\u003cdiv class=\"flex w-full flex-col gap-1 empty:hidden\"\u003e\n\u003cdiv class=\"markdown prose dark:prose-invert wrap-break-word w-full light markdown-new-styling\"\u003e\n\u003cp data-start=\"0\" data-end=\"329\"\u003e\u003cstrong data-start=\"0\" data-end=\"68\"\u003eQ: What is the Scubapro MK25 EVO DIN 300 \/ S620 Ti (REG359 DIN)?\u003c\/strong\u003e\u003cbr data-start=\"68\" data-end=\"71\"\u003eA: It is a high-end, all-conditions scuba regulator system combining the MK25 EVO DIN 300 first stage with the S620 Ti second stage for ultra-smooth breathing, strong cold-water performance, and lightweight durability. \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp data-start=\"331\" data-end=\"605\"\u003e\u003cstrong data-start=\"331\" data-end=\"382\"\u003eQ: What makes the MK25 EVO first stage special?\u003c\/strong\u003e\u003cbr data-start=\"382\" data-end=\"385\"\u003eA: It uses an air-balanced flow-through piston design that delivers very high airflow, unaffected by depth or tank pressure, with excellent freeze resistance for cold-water diving. \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp data-start=\"607\" data-end=\"873\"\u003e\u003cstrong data-start=\"607\" data-end=\"664\"\u003eQ: What are the benefits of the S620 Ti second stage?\u003c\/strong\u003e\u003cbr data-start=\"664\" data-end=\"667\"\u003eA: It offers effortless inhalation, reduced breathing resistance, and a compact, lightweight design using titanium components for corrosion resistance and durability. \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp data-start=\"875\" data-end=\"1127\"\u003e\u003cstrong data-start=\"875\" data-end=\"931\"\u003eQ: Is this regulator suitable for cold water diving?\u003c\/strong\u003e\u003cbr data-start=\"931\" data-end=\"934\"\u003eA: Yes. The MK25 EVO includes XTIS thermal insulation technology, improving freeze resistance and making it reliable in cold, temperate, and warm waters. \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp data-start=\"1129\" data-end=\"1388\"\u003e\u003cstrong data-start=\"1129\" data-end=\"1159\"\u003eQ: What does DIN 300 mean?\u003c\/strong\u003e\u003cbr data-start=\"1159\" data-end=\"1162\"\u003eA: It refers to a screw-in connection rated for 300 bar, offering a more secure, compact, and high-pressure-capable tank connection commonly used in technical and European diving setups. \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp data-start=\"1390\" data-end=\"1660\" data-is-last-node=\"\" data-is-only-node=\"\"\u003e\u003cstrong data-start=\"1390\" data-end=\"1428\"\u003eQ: Who is this regulator best for?\u003c\/strong\u003e\u003cbr data-start=\"1428\" data-end=\"1431\"\u003eA: It is ideal for advanced recreational, technical, and professional divers who want top-tier breathing performance, lightweight titanium components, and reliable all-temperature capability. \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/section\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003ch5\u003e\n\u003cbr\u003eMaintenance Tips\u003c\/h5\u003e\n\u003cul\u003e\n\u003cli data-section-id=\"43ph8u\" data-start=\"0\" data-end=\"222\"\u003eRinse thoroughly with fresh water after every dive, including flushing the \u003cstrong data-start=\"77\" data-end=\"101\"\u003eS620 Ti second stage\u003c\/strong\u003e and all hose ports while keeping the DIN first stage dust cap securely in place. \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"8vldf5\" data-start=\"223\" data-end=\"387\"\u003ePress and lightly cycle the purge and adjustment knobs during rinsing to remove salt, sand, and prevent internal sticking. \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"7vmtj2\" data-start=\"388\" data-end=\"537\"\u003eAlways rinse only when pressurized or properly protected to avoid water entering the first stage DIN inlet. \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"1pv0rdk\" data-start=\"538\" data-end=\"672\"\u003eDrain completely and air-dry in a shaded, ventilated area away from direct sunlight or heat. \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"1wz2jlt\" data-start=\"673\" data-end=\"767\"\u003eStore loosely coiled in a cool, dry place, avoiding kinks in hoses and stress on fittings.\u003c\/li\u003e\n\u003cli data-section-id=\"ir8g08\" data-start=\"768\" data-end=\"940\"\u003eInspect hoses, mouthpiece, DIN O-rings, purge cover, and titanium components for wear, salt buildup, or cracking before each dive. \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"xnflit\" data-start=\"941\" data-end=\"1039\"\u003eAvoid sand, oils, solvents, and chemical exposure that can damage seals and valve performance.\u003c\/li\u003e\n\u003cli data-section-id=\"3n0n51\" data-start=\"1040\" data-end=\"1213\" data-is-last-node=\"\"\u003eHave the MK25 EVO first stage and S620 Ti serviced regularly by an authorized technician (typically annually or per usage intensity).\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Scubapro","offers":[{"title":"DIN - 12.620.300","offer_id":45807213969599,"sku":"REG359 DIN","price":936.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0683\/5703\/0079\/files\/reg359.jpg?v=1783012915","url":"https:\/\/www.mybackyardzone.com\/products\/reg359","provider":"Your Outdoor Setup Starts Here","version":"1.0","type":"link"}