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6STF6 by Dixon Valve | Hydraulic Quick Disconnect Coupling | ST-Series | 3 4 Female NPTF x 3 4 Heavy-Duty Flushface | Socket | Nitrile Seal | Steel For Discount

$34.12

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Compatibility & Interchange:
  • Interchangeable with Parker Snap-Tite 71-Series
Construction:
  • Machined components are manufactured using solid steel or 316 stainless bar stock.
  • Stainless steel balls, retaining rings, and springs maximize corrosion resistance and extend service life.
  • Steel componentry is plated using ROHS-compliant trivalent chrome.
  • Steel coupler sleeves are hardened to resist deformation and maximize service life.
  • Steel plugs are hardened to provide heavy-duty performance.
Seal Components:
  • Nitrile seals are standard, providing a temperature range of -40°F to 250°F (-40°C to 121°C).
  • All couplers and plugs incorporate PTFE anti-extrusion rings to protect the seal components from dynamic impulse damage.
Note:
  • Minimum burst pressure ratings were established under laboratory conditions using a Static Burst Unit (SBU). For high impulse applications
    and to meet Det Norske Veritas (DNV) compliance, the burst pressure must be divided by four (4) to ensure a 4:1 safety factor during system operation.
Additional Information:
ST-Series | Heavy-Duty Flushface Rated Pressure Chart
Body Size

 Steel Coupler Plug Coupled

 316 Stainless Coupler Plug Coupled
Maximum Working

 Burst

 Maximum Working

 Burst
1 4

10,000 PSI
(700 bar)

 27,300 PSI
(1,800 bar)

 5,000 PSI
(345 bar)

 28,000 PSI
(1,900 bar)
3 8

10,000 PSI
(700 bar)

 27,300 PSI
(1,800 bar)

 5,000 PSI
(345 bar)

 28,000 PSI
(1,900 bar)
1 2

10,000 PSI
(700 bar)

 22,500 PSI
(1,500 bar)

 5,000 PSI
(345 bar)

 25,000 PSI
(1,700 bar)
3 4

7,500 PSI
(500 bar)

 20,200 PSI
(1,400 bar)

 5,000 PSI
(345 bar)

 22,800 PSI
(1,550 bar)
1

7,500 PSI
(500 bar)

 19,400 PSI
(1,300 bar)

 4,000 PSI
(275 bar)

 18,500 PSI
(1,250 bar)
1 -V2

 8,500 PSI
(585 bar)

 25,900 PSI
(1,750 bar)

 –

 –
2

5,000 PSI
(345 bar)

 16,000 PSI
(1,100 bar)

 3,000 PSI
(200 bar)

 10,000 PSI
(700 bar)
ST-Series | Heavy-Duty Flushface Coupler (Female Threads)
src=
Part
Number

 Coupling
Type

 Body
Size

 Threads

 Material

 Length

 Max.
OD

 Hex
2STF2

 Socket Female

 1 4

1 4 – 18 Female NPTF

 Steel

 1.96
(49.8mm)

 1.23
(31.2mm)

 15 16

2STF2-SS

 Socket Female

 1 4

1 4 – 18 Female NPTF

 316 Stainless

 1.96
(49.8mm)

 1.23
(31.2mm)

 15 16

2STBF2

 Socket Female

 1 4

1 4 – 19 Female BSPP

 Steel

 1.96
(49.8mm)

 1.23
(31.2mm)

 15 16

2STBF2-SS

 Socket Female

 1 4

1 4 – 19 Female BSPP

 316 Stainless

 1.96
(49.8mm)

 1.23
(31.2mm)

 15 16

3STF2

 Socket Female

 3 8

1 4 – 18 Female NPTF

 Steel

 2.36
(59.9mm)

 1.60
(40.6mm)

 1-3 16

3STF3

 Socket Female

 3 8

3 8 – 18 Female NPTF

 Steel

 2.36
(59.9mm)

 1.60
(40.6mm)

 1-3 16

3STF3-SS

 Socket Female

 3 8

3 8 – 18 Female NPTF

 316 Stainless

 2.36
(59.9mm)

 1.60
(40.6mm)

 1-3 16

3STBF3

 Socket Female

 3 8

3 8 – 19 Female BSPP

 Steel

 2.36
(59.9mm)

 1.60
(40.6mm)

 1-3 16

3STBF3-SS

 Socket Female

 3 8

3 8 – 19 Female BSPP

 316 Stainless

 2.36
(59.9mm)

 1.60
(40.6mm)

 1-3 16

3STF4

 Socket Female

 3 8

1 2 – 14 Female NPTF

 Steel

 2.36
(59.9mm)

 1.60
(40.6mm)

 1-3 16

3STBF4

 Socket Female

 3 8

1 2 – 14 Female BSPP

 Steel

 2.36
(59.9mm)

 1.60
(40.6mm)

 1-3 16

3STBF4-SS

 Socket Female

 3 8

1 2 – 14 Female BSPP

 316 Stainless

 2.36
(59.9mm)

 1.60
(40.6mm)

 1-3 16

4STF4

 Socket Female

 1 2

1 2 – 14 Female NPTF

 Steel

 2.77
(70.4mm)

 1.98
(50.3mm)

 1-1 2

4STF4-SS

 Socket Female

 1 2

1 2 – 14 Female NPTF

 316 Stainless

 2.77
(70.4mm)

 1.98
(50.3mm)

 1-1 2

4STBF4

 Socket Female

 1 2

1 2 – 14 Female BSPP

 Steel

 2.77
(70.4mm)

 1.98
(50.3mm)

 1-1 2

4STBF4-SS

 Socket Female

 1 2

1 2 – 14 Female BSPP

 316 Stainless

 2.77
(70.4mm)

 1.98
(50.3mm)

 1-1 2

4STOF4

 Socket Female

 1 2

3 4 – 16 Female ORB

 Steel

 2.77
(70.4mm)

 1.98
(50.3mm)

 1-1 2

6STF6

 Socket Female

 3 4

3 4 – 14 Female NPTF

 Steel

 3.03
(77.0mm)

 2.35
(59.7mm)

 1-3 4

6STF6-SS

 Socket Female

 3 4

3 4 – 14 Female NPTF

 316 Stainless

 3.03
(77.0mm)

 2.35
(59.7mm)

 1-3 4

6STBF6

 Socket Female

 3 4

3 4 – 14 Female BSPP

 Steel

 3.03
(77.0mm)

 2.35
(59.7mm)

 1-3 4

6STBF6-SS

 Socket Female

 3 4

3 4 – 14 Female BSPP

 316 Stainless

 3.03
(77.0mm)

 2.35
(59.7mm)

 1-3 4

6STOF6

 Socket Female

 3 4

1-1 16 – 12 Female ORB

 Steel

 3.03
(77.0mm)

 2.35
(59.7mm)

 1-3 4

8STF8

 Socket Female

 1

1 – 11-1 2 Female NPTF

 Steel

 3.33
(84.6mm)

 2.73
(69.3mm)

 2

8STF8-SS

 Socket Female

 1

1 – 11-1 2 Female NPTF

 316 Stainless

 3.33
(84.6mm)

 1.55
(39.3mm)

 2

8STBF8

 Socket Female

 1

1 – 11 Female BSPP

 Steel

 3.33
(84.6mm)

 2.73
(69.3mm)

 2

8STBF8-SS

 Socket Female

 1

1 – 11 Female BSPP

 316 Stainless

 3.33
(84.6mm)

 2.73
(69.3mm)

 2

8STOF8

 Socket Female

 1

1 -5 16-12 Female ORB

 Steel

 3.33
(84.6mm)

 2.73
(69.3mm)

 2

8STF10

 Socket Female

 1

1-1 4 – 11-1 2 Female NPTF

 Steel

 3.67
(93.2mm)

 2.73
(69.3mm)

 2

8STBF10

 Socket Female

 1

1-1 4 – 11 Female BSPP

 Steel

 3.67
(93.2mm)

 2.73
(69.3mm)

 2

8STBF10-SS

 Socket Female

 1

1-1 4 – 11 Female BSPP

 316 Stainless

 3.67
(93.2mm)

 2.73
(69.3mm)

 2

src=
16STF12

 Socket Female

 2

1-1 2 – 11-1 2 Female NPTF

 Steel

 6.20
(157.5mm)

 4.47
(113.5mm)

 3.78

16STBF12

 Socket Female

 2

1-1 2 – 11 Female BSPP

 Steel

 6.20
(157.5mm)

 4.47
(113.5mm)

 3.78

16STOF12

 Socket Female

 2

1-7 8 – 12 Female ORB

 Steel

 6.20
(157.5mm)

 4.47
(113.5mm)

 3.78

16STF16

 Socket Female

 2

2 – 11-1 2 Female NPTF

 Steel

 6.20
(157.5mm)

 4.47
(113.5mm)

 3.78

16STF16-SS

 Socket Female

 2

2 – 11-1 2 Female NPTF

 316 Stainless

 6.20
(157.5mm)

 4.47
(113.5mm)

 3.78

16STBF16

 Socket Female

 2

2 – 11 Female BSPP

 Steel

 6.20
(157.5mm)

 4.47
(113.5mm)

 3.78

16STOF16

 Socket Female

 2

2-1 2 – 12 Female ORB

 Steel

 6.20
(157.5mm)

 4.47
(113.5mm)

 3.78

ST-Series | Heavy-Duty Flushface Old Style Coupler (Female Threads)
src=
Part
Number

 Coupling
Type

 Body
Size

 Threads

 Material

 Length

 Max.
OD

 Hex
8STF8-V2

 Socket Female

 1

1 – 11-1 2 Female NPTF

 Steel

 4.55
(115.6mm)

 2.74
(69.6mm)

 2

8STBF8-V2

 Socket Female

 1

1 – 11 Female BSPP

 Steel

 4.55
(115.6mm)

 2.74
(69.6mm)

 2

8STF10-V2

 Socket Female

 1

1-1 4 – 11-1 2 Female NPTF

 Steel

 4.90
(124.5mm)

 2.74
(69.6mm)

 2

ST-Series | Heavy-Duty Flushface Plug (Female Threads)
src=
Part
Number

 Coupling
Type

 Body
Size

 Threads

 Material

 Length

 Max.
OD

 Hex
ST2F2

 Plug Male

 1 4

1 4 – 18 Female NPTF

 Steel

 1.84
(46.7mm)

 0.90
(22.9mm)

 13 16

ST2F2-SS

 Plug Male

 1 4

1 4 – 18 Female NPTF

 316 Stainless

 1.84
(46.7mm)

 0.90
(22.9mm)

 13 16

ST2BF2

 Plug Male

 1 4

1 4 – 19 Female BSPP

 Steel

 1.84
(46.7mm)

 0.90
(22.9mm)

 13 16

ST2BF2-SS

 Plug Male

 1 4

1 4 – 19 Female BSPP

 316 Stainless

 1.84
(46.7mm)

 0.90
(22.9mm)

 13 16

ST3F2

 Plug Male

 3 8

1 4 – 18 Female NPTF

 Steel

 2.32
(58.9mm)

 1.48
(37.6mm)

 1

ST3F3

 Plug Male

 3 8

3 8 – 18 Female NPTF

 Steel

 2.32
(58.9mm)

 1.48
(37.6mm)

 1

ST3F3-SS

 Plug Male

 3 8

3 8 – 18 Female NPTF

 316 Stainless

 2.32
(58.9mm)

 1.48
(37.6mm)

 1

ST3BF3

 Plug Male

 3 8

3 8 – 19 Female BSPP

 Steel

 2.32
(58.9mm)

 1.48
(37.6mm)

 1

ST3BF3-SS

 Plug Male

 3 8

3 8 – 19 Female BSPP

 316 Stainless

 2.32
(58.9mm)

 1.48
(37.6mm)

 1

ST3F4

 Plug Male

 3 8

1 2 – 14 Female NPTF

 Steel

 2.32
(58.9mm)

 1.48
(37.6mm)

 1

ST3BF4

 Plug Male

 3 8

1 2 – 14 Female BSPP

 Steel

 2.32
(58.9mm)

 1.48
(37.6mm)

 1

ST3BF4-SS

 Plug Male

 3 8

1 2 – 14 Female BSPP

 316 Stainless

 2.32
(58.9mm)

 1.48
(37.6mm)

 1

ST4F4

 Plug Male

 1 2

1 2 – 14 Female NPTF

 Steel

 2.37
(60.2mm)

 1.65
(41.9mm)

 1-1 2

ST4F4-SS

 Plug Male

 1 2

1 2 – 14 Female NPTF

 316 Stainless

 2.37
(60.2mm)

 1.65
(41.9mm)

 1-1 2

ST4BF4

 Plug Male

 1 2

1 2 – 14 Female BSPP

 Steel

 2.37
(60.2mm)

 1.65
(41.9mm)

 1-1 2

ST4BF4-SS

 Plug Male

 1 2

1 2 – 14 Female BSPP

 316 Stainless

 2.37
(60.2mm)

 1.65
(41.9mm)

 1-1 2

ST4OF4

 Plug Male

 1 2

3 4 – 16 Female ORB

 Steel

 2.37
(60.2mm)

 1.65
(41.9mm)

 1-1 2

ST6F6

 Plug Male

 3 4

3 4 – 14 Female NPTF

 Steel

 2.96
(75.2mm)

 1.92
(48.8mm)

 1-3 4

ST6F6-SS

 Plug Male

 3 4

3 4 – 14 Female NPTF

 316 Stainless

 2.96
(75.2mm)

 1.92
(48.8mm)

 1-3 4

ST6BF6

 Plug Male

 3 4

3 4 – 14 Female BSPP

 Steel

 2.96
(75.2mm)

 1.92
(48.8mm)

 1-3 4

ST6BF6-SS

 Plug Male

 3 4

3 4 – 14 Female BSPP

 316 Stainless

 2.96
(75.2mm)

 1.92
(48.8mm)

 1-3 4

ST6OF6

 Plug Male

 3 4

1-1 16 – 12 Female ORB

 Steel

 2.96
(75.2mm)

 1.92
(48.8mm)

 1-3 4

ST8F8

 Plug Male

 1

1 – 11-1 2 Female NPTF

 Steel

 3.22
(81.8mm)

 2.10
(53.3mm)

 1-7 8

ST8F8-SS

 Plug Male

 1

1 – 11-1 2 Female NPTF

 316 Stainless

 3.22
(81.8mm)

 2.10
(53.3mm)

 1-7 8

ST8BF8

 Plug Male

 1

1 – 11 Female BSPP

 Steel

 3.22
(81.8mm)

 2.10
(53.3mm)

 1-7 8

ST8BF8-SS

 Plug Male

 1

1 – 11 Female BSPP

 316 Stainless

 3.22
(81.8mm)

 2.10
(53.3mm)

 1-7 8

ST8OF8

 Plug Male

 1

1-5 16 – 12 Female ORB

 Steel

 3.22
(81.8mm)

 2.10
(53.3mm)

 1-7 8

ST8F10

 Plug Male

 1

1-1 4 – 11-1 2 Female NPTF

 Steel

 3.48
(88.4mm)

 2.20
(55.9mm)

 2

ST8F10-SS

 Plug Male

 1

1-1 4 – 11-1 2 Female NPTF

 316 Stainless

 3.48
(88.4mm)

 2.20
(55.9mm)

 2

ST8BF10

 Plug Male

 1

1-1 4 – 11 Female BSPP

 Steel

 3.48
(88.4mm)

 2.20
(55.9mm)

 2

ST8BF10-SS

 Plug Male

 1

1-1 4 – 11 Female BSPP

 316 Stainless

 3.48
(88.4mm)

 2.20
(55.9mm)

 2

src=
ST16F12

 Plug Male

 2

1-1 2 – 11-1 2 Female NPTF

 Steel

 4.50
(114.3mm)

 3.48
(88.4mm)

 3-1 4

ST16BF12

 Plug Male

 2

1-1 2 – 11 Female BSPP

 Steel

 4.50
(114.3mm)

 3.48
(88.4mm)

 3-1 4

ST16OF12

 Plug Male

 2

1-7 8 – 12 Female ORB

 Steel

 4.50
(114.3mm)

 3.48
(88.4mm)

 3-1 4

ST16F16

 Plug Male

 2

2 – 11-1 2 Female NPTF

 Steel

 4.50
(114.3mm)

 3.48
(88.4mm)

 3-1 4

ST16F16-SS

 Plug Male

 2

2 – 11-1 2 Female NPTF

 316 Stainless

 4.50
(114.3mm)

 3.48
(88.4mm)

 3-1 4

ST16BF16

 Plug Male

 2

2 – 11 Female BSPP

 Steel

 4.50
(114.3mm)

 3.48
(88.4mm)

 3-1 4

ST16OF16

 Plug Male

 2

2-1 2 – 12 Female ORB

 Steel

 4.50
(114.3mm)

 3.48
(88.4mm)

 3-1 4

ST-Series | Heavy-Duty Flushface Old Style Plug (Female Threads)
src=
Part
Number

 Coupling
Type

 Body
Size

 Threads

 Material

 Length

 Max.
OD

 Hex
ST8F8-V2

 Plug Male

 1

1 – 11-1 2 Female NPTF

 Steel

 3.26
(82.8mm)

 1.92
(48.8mm)

 1-3 4

ST8BF8-V2

 Plug Male

 1

1 – 11 Female BSPP

 Steel

 3.26
(82.8mm)

 1.92
(48.8mm)

 1-3 4

ST8F10-V2

 Plug Male

 1

1-1 4 – 11-1 2 Female NPTF

 Steel

 3.50
(88.9mm)

 1.98
(50.3mm)

 2

Title

Default Title

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