{"product_id":"black-steel-close-nipple-2-in-3-in-npt","title":"Black Steel Close Nipple, 2 in and 3 in NPT, for Ground Joint Air Hose Fittings","description":"\u003cp\u003eA close nipple is the shortest nipple a given pipe size can be made in: threaded end to end with no plain barrel in the middle. It is what you reach for when two female fittings have to be joined back to back with nothing between them.\u003c\/p\u003e\n\u003cp\u003eOn large bore air hose work that comes up constantly, joining a ground joint coupling to a manifold port, a tank bung or another female fitting with no room for a standard nipple.\u003c\/p\u003e\n\u003ch3\u003eSizes\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eS1290:\u003c\/strong\u003e 2 in NPT black close nipple\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eS1295:\u003c\/strong\u003e 3 in NPT black close nipple\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eWorking with close nipples\u003c\/h3\u003e\n\u003cp\u003eThere is no flat to grip, which is the one awkward thing about them. Use a proper nipple wrench or an internal pipe wrench rather than clamping a pipe wrench on the threads, because crushed threads on a close nipple mean the joint will never seal and you will not get it back out either.\u003c\/p\u003e\n\u003cp\u003eUse pipe thread sealant rather than tape on compressed air. Tape shreds and the pieces travel downstream into check valve seats and regulator seats, which is a slow and annoying failure to chase later.\u003c\/p\u003e\n\u003cp\u003eBlack steel is unplated, so it will surface rust in a damp shop. That is cosmetic on the outside; what matters is that it is a pressure rated pipe fitting and not a plumbing store decorative part.\u003c\/p\u003e\n\u003ch3\u003eRelated parts\u003c\/h3\u003e\n\u003cp\u003eWe also stock ground joint hammer lock couplings, unions and four bolt clamps in 2 in and 3 in, plus anti whip safety cables and air hose.\u003c\/p\u003e\n\u003cp\u003eBlack steel close nipples in 2 in and 3 in NPT for ground joint and hammer lock air hose assemblies.\u003c\/p\u003e","brand":"AirComParts","offers":[{"title":"2 in NPT","offer_id":67734903193875,"sku":"S1290","price":17.99,"currency_code":"USD","in_stock":true},{"title":"3 in NPT","offer_id":67734903226643,"sku":"S1295","price":63.99,"currency_code":"USD","in_stock":true}],"url":"https:\/\/aircompressorstore.com\/products\/black-steel-close-nipple-2-in-3-in-npt","provider":"Warthog Air Compressor Store","version":"1.0","type":"link"}