Page 432 - 4300 Catalog Cover.pdf

4300 Catalog

Assembly / Installation

Parker Hannifin Corporation

Tube Fittings Division

Columbus, Ohio

http://www.parker.com/tfd

T22

Notes:

1. Assembly Torque: Torque values are for unlubricated

carbon steel components and properly lubricated stainless

steel components. For stainless steel, a lubricant such as

Permatex Anti-Seize Lubricant is recommended to prevent

galling.

2. FFWR: The Flats From Wrench Resistance or “Flats”

method is recommended for steel, stainless steel and

brass components.

3. Torque and FFWR: Torques and FFWR shown in the chart

are for use with the tube materials, wall thickness, etc.

recommended by Parker Hannifin Tube Fittings Division for

use with Parker Triple-Lok fittings.

Table T21 —Triple-Lok Troubleshooting guide

Table T20 – Triple-Lok assembly torques and FFWR

For brass fittings, use approximately 65% of the torque

values shown, unlubricated.

Triple-Lok Assembly

37° Flare

Triple-Lok Troubleshooting Guide

CONDITION

Tube nut binds to tube flare

Tube nut cannot engage the

fitting body

Flare is out-of-round

(lopsided)

Nicks, scratches, pock marks

on tube flare of fitting

Tube crack on flare

Tube nut bottoms out before

seats are mated properly

Immediate leakage from tube

nut

Tube nut continues to back off

or loosen

Damaged fitting and/or nose

collapse, flow reduction

PROBABLE CAUSE(S)

• Flare too large or tube wall

too heavy

• Tube cut at an angle

• Contaminants on tube ID or

flaring cone/pin prior to flaring

• Worn/damaged flaring cone/pin

• Poor-quality tube

• Poor-quality welded tube;

work-hardened tube; tube

not annealed (too hard)

• Unintentional use of 45º flare

tube nut, or tube sleeve was

omitted

• Connection may not be

tightened properly (if at all)

• Damaged Fitting

• Excessive vibration

• Improper assembly torque

• Frequent assembly and

disassembly or over-tightening

RECOMMENDATION

• Flare new tube end using proper flare

diameters

• Re-cut tube, reasonably square, to

90º ± 1º and flare new tube end

• Flare new tube end using proper tube

preparation techniques

• Assure that flare cone is clean

• Replace poor-quality tube

• Flare new tube end using appropriate

tube (e.g.,fully annealed) and tube

cutting methods

• Use appropriate 37° flare

components (body, nut and sleeve)

• Check joint for appropriate FFWR or

torque; retighten as appropriate

• Replace damaged fitting

• Re-route or clamp properly

• Assemble to appropriate torque

• Fitting should be replaced and

tightened properly; avoid frequent

assembly/disassembly

SAE

Dash

Size

Thread

Size

Assembly

Torque* (+10% -0)

Tube

Connection

FFWR

Swivel Nut or

Hose Connection

FFWR

in. lb.

ft. lb.

-2 5/16-24 35

2

—

-3 3/8-24

65

5

—

-4 7/16-20 130

11

2 1/2

2

-5 1/2-20 165

14

2 1/2

2

-6 9/16-18 235

20

2 1/2

2

-8 3/4-16 525

43

2 1/2

2

-10 7/8-14 650

55

1 1/2

-12 1 1/16-12 950

80

1 1/2

-14 1 3/16-12 1200

100

1 1/2

-16 1 5/16-12 1400

115

1

1 1/2

-20 1 5/8-12 1900

160

1

-24 1 7/8-12 2250

185

1

-32 2 1/2-12 3000

250

1

-40

3-12

— — 1

1

Dimensions and pressures for reference only, subject to change.