{"product_id":"merit-brass-118-20-countersunk-plug-1-1-4-in-mnpt-fnpt","title":"Merit Brass 118-20 Countersunk Plug 1-1\/4 in Mnpt Fnpt","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe MERIT BRASS 118-20 is a brass countersunk plug designed to close off threaded pipe openings in plumbing, mechanical, and fluid-handling systems. It features male NPT (MNPT) external threads and a female NPT (FNPT) countersunk socket at the head, allowing the plug to sit flush or below the surface of a threaded fitting or manifold. Rated at Class 125, this plug is suited for low-to-medium pressure service in water, oil, and general fluid applications. At 0.34 pounds and sized for 1-1\/4 inch connections, it provides a solid, compact seal point for capping unused ports. Licensed plumbers and pipefitters install this type of fitting during system assembly, maintenance, and testing.\u003c\/p\u003e\u003cp\u003eThis countersunk plug is used in residential and commercial plumbing systems, hydronic heating distribution manifolds, compressed air headers, and industrial piping where a low-profile port closure is required. The MNPT x FNPT configuration makes it compatible with standard NPT-threaded pipe, fittings, and manifold bodies. Its countersunk profile allows it to recess into a tapped hole, keeping connections tidy in close-clearance installations where a raised hex plug would interfere with adjacent components.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eCountersunk profile sits flush or recessed in tapped fittings and manifolds\u003c\/li\u003e\n\u003cli\u003eMNPT x FNPT threaded connection for standard NPT pipe compatibility\u003c\/li\u003e\n\u003cli\u003eClass 125 pressure rating for low-to-medium pressure fluid service\u003c\/li\u003e\n\u003cli\u003eSolid brass construction provides corrosion resistance in water and oil service\u003c\/li\u003e\n\u003cli\u003e1-1\/4 inch fitting size for common mid-range pipe port closures\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned as an OEM-style replacement or new-installation fitting for standard NPT-threaded pipe systems and manifolds requiring a countersunk plug closure at 1-1\/4 inch port size.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eInstallation is performed by a licensed plumber or pipefitter using a pipe wrench or appropriately sized socket. Always depressurize and drain the system before removing or installing pipe plugs. Apply thread sealant tape or pipe dope to the MNPT threads in accordance with local plumbing codes before threading the plug into the port. Do not overtighten brass fittings, as brass threads can gall or crack under excessive torque.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eFitting Type\u003c\/strong\u003e: Countersunk Plug\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFitting Size\u003c\/strong\u003e: 1-1\/4 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEnd Connections\u003c\/strong\u003e: MNPT x FNPT\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eConnection Type\u003c\/strong\u003e: Threaded\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePressure Rating\u003c\/strong\u003e: 125 psi\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eClass\u003c\/strong\u003e: 125\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial \/ Finish\u003c\/strong\u003e: Brass\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLead Free\u003c\/strong\u003e: No\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.34 pounds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUNSPSC Code\u003c\/strong\u003e: 40175300\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eStandard Information\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand\u003c\/strong\u003e: MERIT BRASS\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: 118-20\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"MERIT BRASS","offers":[{"title":"Default Title","offer_id":51540119879986,"sku":"118-20","price":46.81,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/f264af2e973db08c485eb2d2d0cbf56a.jpg?v=1785846186","url":"https:\/\/voomisupply.com\/products\/merit-brass-118-20-countersunk-plug-1-1-4-in-mnpt-fnpt","provider":"Voomi Supply","version":"1.0","type":"link"}