Cupro Nickel Butt-Weld fittings offer various advantages over other forms of fittings. Welding the fitting to the pipe causes it to be leak-proof, adds strength, utilizes a small amount of space and minimizes the possibility of erosion and corrosion. W&O carries a large supply of butt-weld fittings conforming to common standards per material specifications. Copper nickel class 200 and 700 are the more common schedules and conform to applicable military specifications.
Marine: CN-200 Copper Nickel Pipe Fittings
Adapters;Caps;Couplings;Elbows;Flanges;High Point Vents;Reducer;Bushings;Reducers;Tees;Unions;Utails;Uthreads
Fitting Size
(PXX) Qualified
Wall
Thickness Insertion
Depth Pre-
Install, A Insertion
Depth Post-
Install, B Outside
Diameter, C Inside
Diameter, D Minimum
Straight Run
Before a
Bend, E
1/2″ OD (T08) Class 200/700 1,29 0,95 0,84 0,51 1,50
1/4″ (P04) Class 200/700 1,29 0,95 0,84 0,55 1,50
3/8″ (P06) Class 200/700 1,40 1,04 1,05 0,69 1,63
1/2″ (P08) Class 200/700 1,61 1,18 1,26 0,85 1,75
3/4″ (P12) Class 200/700 1,86 1,36 1,49 1,06 2,00
1″ (P16) Class 200/700 2,16 1,57 1,80 1,33 2,38
1 1/4″ (P20) Class 200/700 2,59 1,88 2,10 1,67 2,88
1 1/2″ (P24) Class 200/700 2,98 2,16 2,49 1,91 3,25
2″ (P32) Class 200/700 3,27 2,37 3,12 2,39 4,00
All dimensions in inches.
Dimensions A, B, C, D & E are applicable to other fittings of the same size within this catalog.
For use on copper-nickel pipe per MIL-T-16420 (class 200, 90/10) or copper pipe per MIL-T-24107 (0.065″ wall).
For tooling dimensions refer to appropriate catalog.
Coupling “thru-bore” design permits pipe to pass completely through. All other fittings have an internal pipe stop.
Material per MIL-T-16420, Alloy 70600
LOKRING CN-200 Pipe fittings are rated at 250 psi from -60ºF to 425ºF
NAVSEA, ABS, LLOYD’S, USCG
Fire approved per NAVSEA, ABS and CFR 46 regulations
All dimensions are reference only and subject to change
For use on 70/30 copper-nickel tube per MIL-T-16420
For tooling dimensions refer to appropriate catalog.
Coupling “thru-bore” design permits pipe to pass completely through. All other fittings have an internal travel stop.
Material per MIL-T-16420, Alloy 71500
LOKRING CN-3300 Pipe fittings are rated at 3300 psi from -60ºF to 425ºF
NAVSEA, ABS, LLOYD’S, USCG approved
Fire approved per NAVSEA, ABS and CFR 46 regulations