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FN/FUN - FLARE NUT and FLARE COUPLER -

update: 2013-11-20
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"FN" FLARE NUT "UN" FLARE COUPLER "FUN" FLARE COUPLER
with Flare Nut
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Lineup

"FN" FLARE NUT

Code No.Item No.Applicable copper tube sizePcs/Pkg(pcs*bag)
10082 FN-2B 6.35(1/4) 100(10*10)
10083 FN-3B 9.35(3/8) 100(10*10)
10084 FN-4B 12.70(1/2) 100(10*10)
10085 FN-5B 15.88(5/8) 100(10*10)
10086 FN-6B 19.05(3/4) 100(10*10)


"UN" FLARE COUPLER

Code No.Item No.Applicable copper tube sizePcs/Pkg(pcs*bag)
10102 UN-2B 6.35(1/4) 50(5*10)
10103 UN-3B 9.52(3/8) 50(5*10)
10104 UN-4B 12.70(1/2) 50(5*10)
10105 UN-5B 15.88(5/8) 50(5*10)
10106 UN-6B 19.05(3/4) 50(5*10)


"FUN" FLARE COUPLER with Flare Nut

Code No.Item No.Applicable copper tube sizePcs/Pkg(pcs*bag)
10092 FUN-2B 6.35(1/4) 100(10*10)
10093 FUN-3B 9.52(3/8) 100(10*10)
10094 FUN-4B 12.70(1/2) 100(10*10)
10095 FUN-5B 15.88(5/8) 100(10*10)
10096 FUN-6B 19.05(3/4) 50(5*10)


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Specification

ItemValue
Applicable refrigerant R410A. R407C. R134a. R404A. R507A. R22


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Caution

  • Nuts must be tightened with a torque wrench strictly to torque specifications listed in the table below.
    Overtightening will cause stress corrosion cracks on the flare nut and undertightening will lead to refrigerant leakage.
Standard Torque Specifications for Flare Nuts :
Nominal diameter1/43/81/25/83/4
Torque(N•m) 16±2 38±4 55±6 75±7 110±10






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