{"product_id":"stz-industries-4-in-fip-each-x-4-in-d-fip-black-malleable-iron-coupling","title":"STZ Industries 4 in. FIP each X 4 in. D FIP Black Malleable Iron Coupling","description":"\u003cdiv\u003e\n\u003cp\u003eMeet the STZ Industries 4 in. FIP x 4 in. FIP Black Malleable Iron Coupling — a rugged, lead-free solution engineered for dependable connections in potable water, irrigation, and industrial piping systems. With two 4-inch female pipe thread ends, this coupling makes it easy to join 4\" pipes with confidence and minimal downtime.\u003c\/p\u003e \u003cp\u003eThe malleable iron construction delivers a proven balance of strength and ductility, absorbing shock and vibration while maintaining a tight seal. The classic black finish adds durability and a weather-ready look for installations in demanding environments.\u003c\/p\u003e \u003ch3\u003eKey benefits\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eLead-free design\u003c\/strong\u003e supports safer potable-water installations and peace of mind for building projects.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eTwo 4\" FIP ends\u003c\/strong\u003e (female iron pipe threads) for straightforward integration with compatible 4\" male fittings and pipes.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eDurable malleable iron\u003c\/strong\u003e provides reliable performance under thermal and mechanical stress, outperforming lighter-duty options.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eRatings you can rely on\u003c\/strong\u003e: up to \u003cstrong\u003e300 psi\u003c\/strong\u003e and \u003cstrong\u003e150°F\u003c\/strong\u003e service, suitable for a wide range of water, HVAC, and industrial piping needs.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eBagged packaging\u003c\/strong\u003e keeps fittings clean and ready for field installs or warehouse storage.\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eWhere and how to use\u003c\/h3\u003e\n\u003cp\u003eThis coupling is ideal wherever you need to connect two 4\" pipes with female threads. Practical applications include replacing damaged couplings in water lines, retrofitting older systems with lead-free components, and securing robust joints in irrigation, commercial plumbing, or light industrial piping networks.\u003c\/p\u003e \u003ch3\u003eInstallation tips\u003c\/h3\u003e\n\u003cp\u003ePair this coupling with appropriate 4\" male-threaded fittings. Apply sealant or PTFE tape to male threads, ensure threads are clean, and avoid overtightening to protect the integrity of the joint. Always verify system pressure and temperature stay within the 300 psi \/ 150°F ratings for a dependable, long-lasting connection.\u003c\/p\u003e \u003ch3\u003eSpecifications at a glance\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003eEnd 1: 4\" FIP\u003c\/li\u003e \u003cli\u003eEnd 2: 4\" FIP\u003c\/li\u003e \u003cli\u003eMaterial: Malleable Iron\u003c\/li\u003e \u003cli\u003eFinish: Black\u003c\/li\u003e \u003cli\u003eMaximum Pressure: 300 psi\u003c\/li\u003e \u003cli\u003eMaximum Temperature: 150°F\u003c\/li\u003e \u003cli\u003ePackaging: Bagged\u003c\/li\u003e \u003cli\u003eLead Content: Lead-free\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e","brand":"Stz Industries","offers":[{"title":"Default Title","offer_id":52185035800850,"sku":"4908448","price":31.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0928\/1024\/8466\/files\/4908448_A.eps_High.jpg?v=1775767073","url":"https:\/\/nationalhardwaregroup.com\/products\/stz-industries-4-in-fip-each-x-4-in-d-fip-black-malleable-iron-coupling","provider":"National Hardware Group","version":"1.0","type":"link"}