{"product_id":"qwork-4-way-heater-control-valve-5-8-16mm-solid-brass-with-lever-switch-compact-corrosion-resistant","title":"QWORK 4-Way Heater Control Valve 5\/8\" (16mm) Solid Brass with Lever Switch, Compact Corrosion-Resistant","description":"\u003cp\u003e\u003cstrong\u003eThe QWORK Solid Brass 5\/8\" 4-Way Heater Control Valve with Switch is a compact, corrosion-resistant brass bypass valve that routes coolant or air through four ports and accepts 16mm (5\/8\") hoses for automotive heating and fluid-control applications.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eThis precision-machined 4-way heater control valve from QWORK is built to manage fluid pathways in automotive heating systems, pneumatic setups, propane lines, and similar applications where routing between multiple channels is required. Made of solid brass, it resists rust and provides a durable connection point for 16mm (5\/8\") inner-diameter hoses. The integrated switch\/control lever makes it straightforward to change flow direction without dismantling plumbing, and the compact footprint fits into tight engine bays or equipment panels.\u003c\/p\u003e\n\n\u003ch3\u003eHow does this valve change flow in a vehicle heating system?\u003c\/h3\u003e\n\u003cp\u003eThe valve redirects fluid or air between four separate outlets so you can select which circuit receives flow. Turning the lever aligns internal passages to open or close specific channels, enabling bypassing, mixing, or isolating portions of the circuit without cutting hoses.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eFour-way internal passage for selective routing.\u003c\/li\u003e\n  \u003cli\u003eManual switch\/lever for simple position changes.\u003c\/li\u003e\n  \u003cli\u003eSupports bypassing or isolating heater cores or accessories.\u003c\/li\u003e\n  \u003cli\u003eCompact form factor fits common engine bay locations.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat hoses and fittings will work with the 5\/8\" 16mm hose barb?\u003c\/h3\u003e\n\u003cp\u003eThe barbed ports accept 16mm (approximately 5\/8\") inner-diameter hoses commonly used in automotive coolant and air lines. For a reliable, leak-resistant connection, pair the hose with appropriate clamps sized for 5\/8\" barb fittings and select hose material compatible with your fluid type.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eDesigned for 16mm ID (5\/8\") rubber or silicone hoses.\u003c\/li\u003e\n  \u003cli\u003eUse worm-gear or ear clamps for secure sealing.\u003c\/li\u003e\n  \u003cli\u003eSuitable for coolant, low-pressure air, propane lines, and fuel lines where brass is appropriate.\u003c\/li\u003e\n  \u003cli\u003eAvoid using with incompatible chemical fluids or excessive pressure beyond spec limits.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhy choose solid brass construction for a control valve?\u003c\/h3\u003e\n\u003cp\u003eSolid brass provides a balance of corrosion resistance, machinability, and mechanical strength that suits many automotive and utility installations. Unlike cheaper plated alloys, brass maintains its seal surfaces and threads in wet environments, extending service life when installed correctly.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eBrass resists rust and galvanic degradation in mixed-metal systems.\u003c\/li\u003e\n  \u003cli\u003eDurable under repeated manual switching and handling.\u003c\/li\u003e\n  \u003cli\u003eThreaded and barbed surfaces retain shape over time for tight seals.\u003c\/li\u003e\n  \u003cli\u003eMachined finish eases hose sliding and clamp placement.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow easy is installation and maintenance?\u003c\/h3\u003e\n\u003cp\u003eInstallation is straightforward: push the 16mm hose onto the 5\/8\" barb and secure with a clamp, mount the unit where accessible, and route lines according to the required flow paths. Periodic inspection of hose clamps and the valve lever for free movement keeps the system functioning; replace hoses if they show degradation.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eSimple push-on barb connection with clamp recommended.\u003c\/li\u003e\n  \u003cli\u003eMount with accessible orientation for manual switching.\u003c\/li\u003e\n  \u003cli\u003eInspect clamps and hoses periodically for leaks or wear.\u003c\/li\u003e\n  \u003cli\u003eAvoid exposing to pressures or temperatures beyond application limits.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho is this for: technicians, hobbyists, and vehicle owners who need a compact, reliable manual four-way valve for routing coolant, air, or low-pressure fuel and propane lines. It's suited for repair shops, custom HVAC or pneumatic projects, classic car heater bypass conversions, and retrofit installations where a small, corrosion-resistant control valve with a 16mm hose barb is required. If you need automatic control or rated high-pressure operation, consider a valve specifically specified for those conditions.\u003c\/p\u003e\n\u003csection class=\"product-faq-snippet\"\u003e\u003ch3\u003eFAQ\u003c\/h3\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Will this valve fit my 5\/8\" heater hose?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes — the barb is sized for 16mm (about 5\/8\") inner-diameter hoses; use a proper clamp for a leak-proof connection.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Can I use this valve with coolant and propane?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: It suits coolant and low-pressure propane or air lines; confirm compatibility with your specific hose material and pressure requirements.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"QWORK","offers":[{"title":"Default Title","offer_id":55166008754519,"sku":"B0DLFMKB5H","price":38.42,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1050\/1524\/7191\/files\/qwork-brass-4-way-valve-front-view.jpg?v=1790361092","url":"https:\/\/britishgarage.co.uk\/products\/qwork-4-way-heater-control-valve-5-8-16mm-solid-brass-with-lever-switch-compact-corrosion-resistant","provider":"British Garage","version":"1.0","type":"link"}