{"product_id":"ptnhz-racing-manual-adjustable-fuel-pressure-regulator-chrome-1-5-psi-inline-for-carburettors","title":"PTNHZ RACING Manual Adjustable Fuel Pressure Regulator — Chrome 1–5 psi Inline for Carburettors","description":"\u003cp\u003e\u003cstrong\u003ePTNHZ RACING Manual Adjustable Fuel Pressure Regulator is a chrome-finish inline regulator that gives precise 1–5 psi control for single or twin carburetor setups and works with low-pressure electric or mechanical fuel pumps.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eIf you run carburetors and need stable low fuel pressure to prevent flooding, inconsistent idle or poor throttle response, this compact regulator is built specifically for that role. The top-mounted numbered dial lets you fine-tune pressure from 1 to 5 psi, while a maximum input limit of 7 psi protects the unit and the carburettor from overpressure. Its chrome finish gives a neat, classic look under the hood, and the design suits Facet-style diaphragm pumps and other low-pressure systems commonly found on motorcycles, classic cars, and custom builds.\u003c\/p\u003e\n\n\u003ch3\u003eHow does this regulator keep carburettors running smoothly?\u003c\/h3\u003e\n\u003cp\u003eThe PTNHZ RACING regulator maintains a consistent downstream pressure so the carburettor float and jets receive steady fuel flow, reducing flooding and lean spikes. Its manual dial lets you adjust for different jetting and altitude needs.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eMaintains 1–5 psi on the outlet, adjustable with the top dial.\u003c\/li\u003e\n  \u003cli\u003eHelps stabilize float bowl level across load and rpm changes.\u003c\/li\u003e\n  \u003cli\u003eReduces the chance of rich running caused by excessive pump pressure.\u003c\/li\u003e\n  \u003cli\u003eChrome housing resists corrosion and looks tidy in engine bays.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eCan I install this on a twin-carburettor setup?\u003c\/h3\u003e\n\u003cp\u003eYes — the regulator is designed to work with single or twin carburettor installations. Position it after the pump and before the feed lines so both carburettors see the same regulated pressure.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eFits inline between the pump outlet and carburettor feed lines.\u003c\/li\u003e\n  \u003cli\u003eOne regulator can serve two carbs when plumbing is split after the regulator.\u003c\/li\u003e\n  \u003cli\u003eWorks with common low-pressure pumps like Facet diaphragm units.\u003c\/li\u003e\n  \u003cli\u003eMaximum input pressure should not exceed 7 psi to avoid damage.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow do I adjust and set the fuel pressure safely?\u003c\/h3\u003e\n\u003cp\u003eUse the numbered dial on the top to dial in pressure from 1 to 5 psi while monitoring with a fuel pressure gauge. Start at a low setting, check for proper idle and no fuel overflow, then incrementally increase if needed for performance or altitude compensation.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eStart at 1–2 psi for most stock carburettor applications.\u003c\/li\u003e\n  \u003cli\u003eMonitor with an inline fuel pressure gauge during adjustment.\u003c\/li\u003e\n  \u003cli\u003eDo not exceed the regulator’s or pump’s maximum ratings (input max 7 psi).\u003c\/li\u003e\n  \u003cli\u003eTighten fittings and inspect for leaks after every adjustment.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat are the build and compatibility details I should know?\u003c\/h3\u003e\n\u003cp\u003eThe unit features a polished chrome exterior and compact inline body designed for low-pressure systems. It is compatible with common fuel hoses and clamps used on vintage and performance carburettors as long as you respect the 7 psi input ceiling.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eChrome finish for corrosion resistance and classic styling.\u003c\/li\u003e\n  \u003cli\u003eTop-mounted numbered adjustment dial for precise control.\u003c\/li\u003e\n  \u003cli\u003eIntended for low-pressure electric or mechanical pumps (Facet-style).\u003c\/li\u003e\n  \u003cli\u003eMaximum inlet pressure: 7 psi — do not exceed this value.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho is this for? If you run single or twin carburettors on motorcycles, classic cars, kit cars or custom builds and need a simple, reliable way to dial in low fuel pressure, this PTNHZ RACING manual adjustable regulator is made for you. It suits tuners who prefer a manual control, restorers who value a period-correct chrome finish, and builders using low-pressure diaphragm pumps who want predictable fueling without complex electronics.\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: Can one regulator serve two carburettors?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes. Install the regulator before the split feed so both carburettors receive the same regulated 1–5 psi pressure.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: What is the maximum inlet pressure allowed?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Do not exceed 7 psi input pressure; higher pressure can damage the regulator and affect carburettor performance.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"PTNHZ RACING","offers":[{"title":"Default Title","offer_id":67591433945273,"sku":"B07S3ZGDSR","price":67.12,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0822\/3765\/3177\/files\/ptnhz-racing-front-view-chrome-regulator.jpg?v=1790551040","url":"https:\/\/redleafauto.ca\/products\/ptnhz-racing-manual-adjustable-fuel-pressure-regulator-chrome-1-5-psi-inline-for-carburettors","provider":"Redleaf Auto","version":"1.0","type":"link"}