Buying Guide

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U.S. customary units in this document are the standard; the metric units are provided for
reference only. The values stated in each system are not exact equivalents.
Copper Tube Fittings continued
RATED INTERNAL WORKING PRESSURES OF JOINTS
MADE WITH FLARED FITTINGS AND COPPER WATER TUBE
Nominal Size Joint
(In Inches) Temperature, °F (°C)
A
Pressure, PSI (BAR)
A
3/8, 1/2, 3/4, 1,
1 1/4, 1 1/2, 2 100 (38) 175 (12)
A
ASME B16.26
RATED INTERNAL WORKING PRESSURES OF
POLYBUTYLENE TUBE AND COPPER BARBED INSERT FITTINGS
Nominal Size Joint
(In Inches) Temperature, °F (°C) Pressure, PSI (BAR)
3/8, 1/2, 3/4, 1 73 (23) 200 (14)
140 (60) 160 (11)
180 (82) 100 (7)
200 (93) 80 (5)
RATED INTERNAL WORKING PRESSURES OF JOINTS
MADE WITH COPPER WATER TUBE AND SOLDER TYPE FITTINGS, PSI (BAR)
Maximum Gauge Working Pressure for Standard Water Tube Sizes [Note (1)]
Saturated Steam
Working Temperature
1
/8" though 1" 1
1
/4" through 2" 2
1
/2" through 4" 5" through 8" 10" to 12" LB (kg)
Joining Material °F °C PSI BAR PSI BAR PSI BAR PSI BAR PSI BAR All Sizes
Alloy Sn50
100 38 200 (14) 175 (12) 150 (10) 135 (9) 100 (6)
50-50 Tin-Lead solder
150 66 150 (10) 125 (9) 100 (7) 90 (6) 70 (5)
15
[Notes (2), (3)]
200 93 100 (7) 90 (6) 75 (5) 70 (5) 50 (3)
250 121 85 (6) 75 (5) 50 (3) 45 (3) 40 (3)
Alloy Sb5
100 38 1090
(9)
(75) 850
(8)
(59) 705
(9)
(49) 660
(8)
(46) 340 (23)
95-5 Tin-Antimony solder
150 66 625
(10)
(43) 485
(10)
(34) 405
(10)
(28) 375
(10)
(26) 280 (19)
15
[Note (4)]
200 93 505
(11)
(35) 395
(10)
(27) 325
(10)
(32) 305
(10)
(21) 230 (16)
250 121 270 (19) 210 (15) 175 (12) 165 (11) 120 (8)
Alloy E
100 38 710
(10)
(49) 555
( 10)
(38) 460
(10)
(32) 430
(10)
(30) 320 (22)
150 66 475
(11)
(33) 370
(10)
(26) 305
(10)
(21) 285
(11)
(20) 215 (15)
15
200 93 375 (26) 290 (20) 240
(11)
(17) 225
(11)
(16) 170 (12)
250 121 320 (22) 250 (17) 205 (14) 195 (13) 145 (9)
Alloy HB
100 38 1035
(9)
(71) 805
(8)
(56) 670
(8)
(46) 625
(9)
(43) 340 (23)
[Note (6)]
150 66 710
(10)
(49) 555
(10)
(38) 460
(10)
(32) 430
(10)
(30) 320 (22)
15
200 93 440
(11)
(30) 345
(11)
(24) 285
(11)
(20) 265
(11)
(18) 200 (14)
250 121 430
(11)
(30) 335
(11)
(23) 275
(11)
(19) 260
(11)
(18) 195 (13)
Joining materials at or
above 593°C Pressure-temperature ratings consistent with the materials and procedures employed.
[Note (7)]
GENERAL NOTE:
For extremely low working temperatures in the 0°F to 200°F range, it is recommended that a joint material melting at or above 1000°F be employed [see Note (5)].
NOTES:
(1) Standard water tube sizes per ASTM B 88
(2) ASTM B 32 Alloy Grade Sn50
(3) The Safe Drinking Water Act Amendment of 1986 prohibits the use of any solder having a lead content
in excess of 0.2% in potable water systems.
(4) ASTM B 32 Alloy Grade Sb5
(5) ASTM B 32 Alloy Grade E
(6) ASTM B 32 Alloy Grade HB
(7) These joining materials are defined as brazing alloys by the American Welding Society.
(8) The solder joint exceeds the strength of Types K, L & M tube in drawn and annealed tempers.
(9) The solder joint exceeds the strength of Types L & M tube in drawn temper and Type K tube in annealed temper.
(10) The solder joint exceeds the strength of Type M tube in drawn temper and Types L & K in annealed temper.
(11) The solder joint exceeds the strength of Type L tube in annealed temper.