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91430 SPS cover edited - Electronic Fasteners Inc

91430 SPS cover edited - Electronic Fasteners Inc

PRESSURE PLUGSDRYSEAL

PRESSURE PLUGSDRYSEAL TYPE with 3/4-inch taper per footPrecision hex socket with maximum depth for positive wrenchingat higher seating torquesDryseal-thread form achieves a seal without need for compoundHeat treated alloy steel for strengthRoundness-closely controlled for better sealingUniform taper of 3/4 inch per footControlled chamfer for faster startingThreads NPTF per ANSI B1.20.3See Notes on page 25See Application Data on page 26DIMENSIONSnominalthread threads A F G L W Xbasic thread dimensionsize per in. ref. min. min. ±.010 nom. note 4 E 0 E 1 L 11/16 .062 27 .318 .062 .140 .312 .156 .003 .27118 .28118 .1601/8 .125 27 .411 .062 .140 .312 .188 .003 .36351 .37360 .16151/4 .250 18 .545 .073 .218 .437 .250 .003 .47739 .49163 .22783/8 .375 18 .684 .084 .250 .500 .312 .005 .61201 .62701 .2401/2 .500 14 .847 .095 .312 .562 .375 .005 .75843 .77843 .3203/4 .750 14 1.061 .125 .312 .625 .562 .007 .96768 .98887 .3391 1.000 11 1/2 1.333 .125 .375 .750 .625 .007 1.21363 1.23863 .4001 1/4 1.250 11 1/2 1.679 .126 .437 .812 .750 .010 1.55713 1.58338 .4201 1/2 1.500 11 1/2 1.918 .156 .437 .812 1.000** .010 1.79609 1.82234 .4202 2.000 11 1/2 2.395 .156 .437 .875 1.000** .010 2.26902 2.29627 .436**.750 for LEVL-SEAL24

PRESSURE PLUGSLEVL SEAL ® TYPE Dryseal Thread Form with 7/8-inch per footPrecision hex socket with maximum depth for positivewrenching at higher seating torquesHeat treated alloy steel for strengthRoundness closely controlled for better sealingHigh pressure is developed through a deliberate difference oftaper between the plug and the tapped hole having standard3/4” taperFlush seating is achieved through closer control of threadforms, sizes and taper-improves safety and appearance.Fully formed PTF dryseal threads for better sealing withoutthe use of a compoundControlled chamfer for fasterSee Application Data on page 27DIMENSIONS*nominal L Ethread A F G +.000 note 3size ref. min. min. –.015 ref.1/16 .062 .307 .052 .141 .250 .281181/8 .125 .401 .049 .141 .250 .373601/4 .250 .529 .045 .266 .406 .491633/8 .375 .667 .040 .266 .406 .627011/2 .500 .830 .067 .329 .531 .778433/4 .750 1.041 .054 .329 .531 .988871 1.000 1.302 .112 .360 .656 1.238631 1/4 1.250 1.647 .102 .360 .656 1.583381 1/2 1.500 1.885 .102 .360 .656 1.822342 2.000 2.360 .084 .360 .656 2.29627See page 24 for threads per inch, w nom., and X.*Dimensions before coating for PTFE/TEFLON-coated LEVL-SEALpressure plugs.NOTES1. Material: ASTM A574 alloy steel, austenitic stainlesssteel or brass.2. Hardness: Rc 35-40 for steel.3. Basic pitch diameter: E-pitch dia. at a distance ofone-half pitch from large end of plug.PTF thread from 7/8-inch taper per foot.E0 – pitch diameter at small end of plug;E1 – pitch diameter at L1 distance from end of plug;L1 – length of hand-tight engagement.4. Bottom of plug to be flat within “X” T.I.R.DRY-SEAL and LEVL-SEAL: Small end of plug to beflush with face of standard NPTF ring gages within onethread (L1, L2 and tapered ring).Large end of plug to be flush with face of special 7/8taper ring gages within one-half thread.5. Undercut in socket at mfrs. option6. Six equally spaced identification grooves (1/16-27plug to have 3 identification grooves) on alloy steelplugs. (LEVL-SEAL)7. Dimensions apply before plating and/or coating.25

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