{"product_id":"parker-4m-v4ln-b-needle-valve-1-4-inch-mnpt-brass-3000-psi","title":"Parker 4M-V4LN-B Needle Valve 1\/4 Inch Mnpt Brass 3000 Psi","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe PARKER 4M-V4LN-B is a straight-pattern needle valve designed for precise flow control in high-pressure fluid and gas systems. It features a brass body with a polytetrafluoroethylene (PTFE) seal, a round handle for manual operation, and male NPT connections on both ends. The valve measures 1.88 inches overall length and 3.06 inches overall height, with a maximum working pressure rating of 3,000 psi. It is sized for 1\/4-inch pipe and is well suited for instrumentation, hydraulic, and pneumatic service lines where tight shutoff and repeatable throttling are required. Licensed plumbers, HVAC technicians, and industrial pipefitters are the primary installers of this valve type.\u003c\/p\u003e\n\u003cp\u003eThis valve is used in residential and light commercial applications where a compact, reliable shutoff or metering point is needed on 1\/4-inch pipe runs. Typical install scenarios include instrument tubing headers, refrigeration service ports, compressed air test manifolds, and hydraulic control circuits. Its straight inline configuration makes it a direct fit in tight panel or manifold layouts where space is limited and precise flow adjustment is critical.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003eStraight-pattern body keeps flow path direct and minimizes pressure drop\u003c\/li\u003e\n  \u003cli\u003eBrass construction provides good corrosion resistance across a wide range of fluid media\u003c\/li\u003e\n  \u003cli\u003ePTFE seal material offers chemical compatibility with many gases and liquids\u003c\/li\u003e\n  \u003cli\u003e3,000 psi maximum working pressure suits high-pressure instrumentation and hydraulic lines\u003c\/li\u003e\n  \u003cli\u003eRound handle allows manual throttling and positive shutoff without tools\u003c\/li\u003e\n  \u003cli\u003eMNPT x MNPT end connections fit standard 1\/4-inch male NPT pipe threads\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned as an OEM-style replacement or direct installation needle valve for 1\/4-inch MNPT pipe connections in high-pressure fluid, gas, and instrumentation systems.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eInstallation should be performed by a licensed plumber, pipefitter, or qualified HVAC technician in accordance with applicable codes such as the IPC or IFGC. Depressurize and isolate the system completely before removing or installing any needle valve. Apply thread sealant or PTFE tape to the male NPT threads per standard practice, taking care not to overtighten fittings in brass bodies. Confirm system pressure does not exceed the valve rated maximum before returning the line to service.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eValve Style\u003c\/strong\u003e: Straight\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePipe Size\u003c\/strong\u003e: 1\/4 inch\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eEnd Connections\u003c\/strong\u003e: MNPT x MNPT\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBody Material\u003c\/strong\u003e: Brass\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSeal Material\u003c\/strong\u003e: Polytetrafluoroethylene (PTFE)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaximum Working Pressure\u003c\/strong\u003e: 3,000 psi\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOverall Length (OAL)\u003c\/strong\u003e: 1.88 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOverall Height (OAH)\u003c\/strong\u003e: 3.06 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.3 pounds\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHandle Type\u003c\/strong\u003e: Round\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eStandard Information\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBrand\u003c\/strong\u003e: PARKER\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: 4M-V4LN-B\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"PARKER","offers":[{"title":"Default Title","offer_id":51539469926706,"sku":"4M-V4LN-B","price":171.22,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/7bf4edfc05a793c9229b27dd079a24ea.jpg?v=1785840875","url":"https:\/\/voomisupply.com\/products\/parker-4m-v4ln-b-needle-valve-1-4-inch-mnpt-brass-3000-psi","provider":"Voomi Supply","version":"1.0","type":"link"}