{"product_id":"qwork-4-way-heater-control-valve-5-8in-16mm-solid-brass-with-manual-switch","title":"QWORK 4-Way Heater Control Valve 5\/8in (16mm) Solid Brass with Manual Switch","description":"\u003cp\u003e\u003cstrong\u003eQWORK's solid brass 5\/8\" 4-way heater control valve with switch is a durable automotive bypass valve that directs coolant and air flow through four channels using a 16mm (5\/8\") hose barb connection.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eThis compact valve gives technicians and DIY vehicle owners a sturdy, corrosion-resistant solution for redirecting heater or coolant lines, managing air-conditioning bypasses, and adapting small pneumatic or propane gas systems. Built from solid brass with a manual switch and a 5\/8\" outer-diameter hose barb for 16mm inner-diameter hose, it installs easily into existing lines and is intended for use with hose clamps to ensure a secure, leak-resistant fit.\u003c\/p\u003e\n\n\u003ch3\u003eHow does this valve help redirect heater or coolant flow?\u003c\/h3\u003e\n\u003cp\u003eThe 4-way design lets you choose among multiple flow paths so you can reroute coolant or bypass the heater core without cutting or replacing long hose runs. The manual switch flips flow between ports quickly, making it useful for testing, seasonal reconfiguration, or temporary bypass setups.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eFour selectable outlets to change flow direction instantly\u003c\/li\u003e\n  \u003cli\u003eSolid brass construction resists corrosion in coolant environments\u003c\/li\u003e\n  \u003cli\u003eManual switching for immediate control without electrical wiring\u003c\/li\u003e\n  \u003cli\u003eFits standard 16mm (5\/8\") hoses for broad compatibility\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eCan I use this valve on air-conditioning, propane, or fuel lines?\u003c\/h3\u003e\n\u003cp\u003eYes — the valve handles a variety of low-pressure fluids and gases in automotive and light industrial systems. It is commonly used to control AC air flow, redirect propane or pneumatic lines, or manage small fuel return paths, but always verify compatibility with the specific fluid and system pressure before installation.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eSuitable for low-pressure pneumatic and propane gas applications\u003c\/li\u003e\n  \u003cli\u003eCompatible with automotive AC and heater hoses when used correctly\u003c\/li\u003e\n  \u003cli\u003eNot recommended for high-pressure or pressurized fuel injection systems\u003c\/li\u003e\n  \u003cli\u003eUse clamps and inspect seals for safe operation with gases or fuels\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat are the installation and connection details I should know?\u003c\/h3\u003e\n\u003cp\u003eThe valve features a 5\/8\" OD barb designed to accept standard 16mm ID hoses; securement with hose clamps is advised to prevent leaks. Its compact body and manual switch mean installation needs minimal clearance, but ensure proper hose routing and support to avoid strain on fittings.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003e5\/8\" outer-diameter barb for 16mm inner-diameter hoses\u003c\/li\u003e\n  \u003cli\u003eUse worm-gear or spring clamps to seal hose connections\u003c\/li\u003e\n  \u003cli\u003eInstall in a location with adequate space for the manual switch\u003c\/li\u003e\n  \u003cli\u003eInspect periodically for wear, corrosion, or clamp looseness\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow durable and reliable is the valve for long-term use?\u003c\/h3\u003e\n\u003cp\u003eConstructed from solid brass, the valve offers strong corrosion resistance compared with many plated or die-cast alloys, making it suited to the humid and chemically active environments inside engine bays. While brass provides longevity, regular visual checks and proper clamp use help maintain leak-free performance over time.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eSolid brass body resists rust and common coolant corrosion\u003c\/li\u003e\n  \u003cli\u003eRobust manual switch built for repeated actuation\u003c\/li\u003e\n  \u003cli\u003eIntended for routine automotive and light industrial use\u003c\/li\u003e\n  \u003cli\u003ePeriodic maintenance extends functional life and safety\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho is this for: The QWORK Solid Brass 5\/8\" 4-Way Heater Control Valve is aimed at mechanics, automotive enthusiasts, fleet maintenance personnel, and DIYers who need a compact, reliable bypass or flow-control device for heater, AC, or low-pressure fluid systems. If you routinely reconfigure coolant routing, work on heating\/ventilation systems, or require a rugged manual valve for small gas or pneumatic lines, this valve offers a straightforward, serviceable solution. Always match the valve to the system's pressure and fluid specifications and use recommended clamps for leak prevention.\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: What size hose fits this QWORK valve?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: The valve uses a 5\/8\" (16mm) outer-diameter barb designed for 16mm inner-diameter hoses; clamps are recommended.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Is this valve suitable for high-pressure fuel systems?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: No. It's intended for low-pressure coolant, AC, propane, and pneumatic lines — not high-pressure fuel injection systems.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"QWORK","offers":[{"title":"Default Title","offer_id":67591513702585,"sku":"B0DLFMKB5H","price":69.17,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0822\/3765\/3177\/files\/qwork-front-view-solid-brass-4way-valve.jpg?v=1790553909","url":"https:\/\/redleafauto.ca\/products\/qwork-4-way-heater-control-valve-5-8in-16mm-solid-brass-with-manual-switch","provider":"Redleaf Auto","version":"1.0","type":"link"}