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C35
Parker Hannifin Corporation
Tube Fittings Division
Columbus, Ohio
http://www.parker.com/tfd
Triple-Lok
®
37° Flare Tube Fittings
4300 Catalog
Dimensions and pressures for reference only, subject to change.
STX
Male Branch Tee
37° Flare / 37° Flare / NPTF
SAE 070425
HPD Base # 213T
RTX
Male Run Tee
37° Flare / NPTF / 37° Flare
SAE 070424
HPD Base # 013T
Y* – Across wrench flats
Y* – Across wrench flats
OTX
Female Branch Tee
37° Flare / 37° Flare / NPTF
SAE 070427
HPD Base # 223T
MTX
Female Run Tee
37° Flare / NPTF / 37° Flare
SAE 070426
HPD Base # 023T
TUBE
FITTING
PART #
END SIZE
M
(in.)
N
(in.)
Y
(in.)
STANDARD
Dynamic
Pressure
(x 1,000 PSI)
1 & 2
(in.)
3
NPTF
-S -SS -B
3 STX
3/16 1/8-27 0.83 0.72 7/16 6.0
4 STX
1/4 1/8-27 0.89 0.78 7/16 6.0 6.0 3.3
4-4-4 STX
1/4 1/4-18 1.05 1.09 9/16 6.0 6.0 3.3
4-4-6 STX
1/4 3/8-18 1.13 1.22 3/4
6.0
5 STX
5/16 1/8-27 0.95 0.78 9/16 6.0 6.0 3.3
5-5-4 STX
5/16 1/4-18 1.05 1.09 9/16
6.0
6 STX
3/8 1/4-18 1.06 1.09 9/16 6.0 6.0 3.3
6-6-6 STX
3/8 3/8-18 1.14 1.22 3/4 6.0 6.0
8 STX
1/2 3/8-18 1.25 1.22 3/4 6.0 6.0 3.3
8-8-8 STX
1/2 1/2-14 1.34 1.47 7/8 6.0 6.0
10 STX
5/8 1/2-14 1.45 1.47 7/8 5.0 5.0 3.3
12 STX
3/4 3/4-14 1.66 1.59 1 1/16 4.0 4.0
14 STX
7/8 3/4-14 1.80 1.69 1 5/16 4.0
16 STX
1 1-11 1/2 1.81 1.97 1 5/16 3.0 3.0
20 STX
1 1/4 1 1/4-11 1/2 2.06 2.38 1 5/8 2.5 2.5
24 STX
1 1/2 1 1/2-11 1/2 1.33 2.64 1 7/8 2.5 2.5
TUBE
FITTING
PART #
END SIZE
M
(in.)
N
(in.)
Y
(in.)
STANDARD
Dynamic
Pressure
(x 1,000 PSI)
1 & 2
(in.)
3
NPTF
-S -SS -B
3 RTX
3/16 1/8-27 0.83 0.72 7/16 6.0 6.0
4 RTX
1/4
1/8-27 0.89 0.78 7/16 6.0 6.0 3.3
4-4-4 RTX
1/4
1/4-18 1.05 1.09 9/16 6.0 6.0
5 RTX
5/16 1/8-27 0.97 0.81 9/16 6.0 6.0 3.3
5-4-5 RTX
5/16 1/4-18 1.05 1.09 9/16
6.0
6 RTX
3/8
1/4-18 1.06 1.09 9/16 6.0 6.0 3.3
6-6-6 RTX
3/8
3/8-18 1.14 1.22 3/4 6.0 6.0
8 RTX
1/2
3/8-18 1.25 1.22 3/4 6.0 6.0 3.3
8-8-8 RTX
1/2
1/2-14 1.34 1.47 7/8 6.0 6.0
10 RTX
5/8
1/2-14 1.45 1.47 7/8 5.0 5.0
12 RTX
3/4
3/4-14 1.66 1.59 1 1/16 4.0 4.0
12-8-12 RTX
3/4
1/2-14 1.66 1.59 1 1/16
5.0
14 RTX
7/8
3/4-14 1.80 1.69 1 5/16 4.0
16 RTX
1
1-11 1/2 1.81 1.97 1 5/16 3.0 3.0
20 RTX
1 1/4 1 1/4-11 1/2 2.06 2.38 1 5/8 2.5
24 RTX
1 1/2 1 1/2-11 1/2 2.33 2.64 1 7/8 2.5 2.5
Y* – Across wrench flats
TUBE
FITTING
PART #
END SIZE
M1
(in.)
N1
(in.)
Y1
(in.)
STANDARD
Dynamic
Pressure
(x 1,000 PSI)
1 & 2
(in.)
3
NPTF
-S -SS -B
4 OTX
1/4 1/8-27 1.08 0.66 9/16 5.0 5.0 3.3
4-4-4 OTX
1/4 1/4-18 1.13 0.88 3/4
5.0
5 OTX
5/16 1/8-27 1.08 0.66 9/16 5.0
6 OTX
3/8 1/4-18 1.24 0.88 3/4 5.0 5.0 3.3
6-6-6 OTX
3/8 3/8-18 1.23 1.02 7/8 4.5 4.5
8 OTX
1/2 3/8-18 1.42 1.02 7/8 4.5 4.5 2.9
8-8-8 OTX
1/2 1/2-14 1.42 1.23 1 1/16 3.0 3.0
10 OTX
5/8 1/2-14 1.64 1.24 1 1/16 3.0 3.0
12 OTX
3/4 3/4-14 1.89 1.36 1 5/16 3.0 3.0 2.0
14 OTX
7/8 3/4-14 1.86 1.42 1 5/16 3.0
16 OTX
1 1-11 1/2 2.17 1.63 1 5/8 1.8 1.2
20 OTX
1 1/4 1 1/4-11 1/2 2.33 1.70 1 7/8 1.5
24 OTX
1 1/2 1 1/2-11 1/2 2.89 2.08 2 1/2 1.5
Y* – Across wrench flats
TUBE
FITTING
PART #
END SIZE
M1
(in.)
N1
(in.)
Y1
(in.)
STANDARD
Dynamic
Pressure
(x 1,000 PSI)
1 & 3
(in.)
2
NPTF
-S -SS -B
4 MTX
1/4 1/8-27 1.08 0.66 9/16 5.0 5.0 3.3
4-4-4 MTX
1/4 1/4-18 1.13 0.88 3/4
5.0
6 MTX
3/8 1/4-18 1.24 0.88 3/4 5.0 5.0 3.3
8 MTX
1/2 3/8-18 1.42 1.02 7/8 4.5 4.5 2.9
8-8-8 MTX
1/2 1/2-14 1.42 1.23 1 1/16 3.0 3.0
10 MTX
5/8 1/2-14 1.64 1.24 1 1/16 3.0
12 MTX
3/4 3/4-14 1.89 1.36 1 5/16 3.0 3.0
14 MTX
7/8 3/4-14 1.86 1.42 1 5/16 3.0
16 MTX
1 1-11 1/2 2.17 1.63 1 5/8 1.8
20 MTX
1 1/4 1 1/4-11 1/2 2.33 1.70 1 7/8 1.5
24 MTX
1 1/2 1 1/2-11 1/2 2.89 2.08 2 1/2