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LL3T20 Eaton ST Series Male Plug - 3/8-18 Male NPTF End Connection Quick Disconnect Coupling - Buna-N Seal - 303 Stainless Steel

Save $2.03 Save $2.03
Original price $20.30
Original price $20.30 - Original price $20.30
Original price $20.30
Current price $18.27
$18.27 - $18.27
Current price $18.27

Eaton ST Series - Quick Disconnect Couplings - Male End Sockets & Plugs

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Specifications for SKU: LL3T20 Eaton
Shape (Orientation): Straight
Material(s): 303 Stainless Steel
Eaton's ST Series is a straight through coupling that is designed for use where minimum pressure drop is required and valving is not needed. These couplings are suited for various and versatile fluid transfer type systems. See How to Order Please reference Fluid Compatibility Chart (Both the elastomer and metal must be considered when determining suitability of combination for a coupling) SPECIFICATIONS
Applications & Markets:
  • Fluid Transfer
  • Chemical
  • Food and Beverage
  • Injection Molding
  • Marine
  • Medical
  • Pressure Washing
  • Steam Cleaning
Product Features:
  • Ball latching mechanism
  • Smooth bore permits free flow of liquid or gas
Standard Body Material: Brass, 303 Stainless Steel, Steel
Standard Seal Material: Buna-N
Other Couplings: ST Series Male End Sockets/Plugs ST Series Female End Sockets/Plugs ST Series Hose Stem Sockets/Plugs
Physical Characteristics
Series Body Size Max. Operating Pressure Min. Burst Pressure Rated Flow
Brass Socket & Plug Brass Socket & Steel Plug Stainless Socket & Plug
(in) (bar) (psi) (bar) (psi) (bar) (psi) (bar) (psi) (lpm) (gpm)
1ST 1/8 193 2,800 234 3,400 290 4,200 772 11,200 10 2.7
2ST 1/4 359 5,200 379 5,500 517 7,500 1,436 20,800 21 5.6
3ST 3/8 193 2,800 290 4,200 434 6,300 772 11,200 57 15
4ST 1/2 152 2,200 241 3,500 248 3,600 608 8,800 83 22
6ST 3/4 117 1,700 145 2,100 207 3,000 468 6,800 250 66
8ST 1 90 1,300 138 2,000 138 2,000 360 5,200 530 140
10ST 1 1/4 117 1,700 186 2,700 152 2,200 468 6,800 697 184
12ST 1 1/2 97 1,400 152 2,200 172 2,500 388 5,600 1,124 297
16ST 2 97 1,400 152 2,200 103 1,500 388 5,600 1,855 490
20ST 2 1/2 62 900 103 1,500 - - 248 3,600 3,131 827
Dimensions ST Series - Female Socket (Male End Connections)
Figure 1
Part NumberBrass Part NumberSteel Part Number303 Stainless Steel Coupling Type Body Size Port Size Thread Type Figure Dimensions
A B Hex
in(mm) in(mm) in(mm)
1S10 - LL1S10 Socket/Female 1/8 1/8 1/8-27 Male NPTF 1 1.06(26.9) 0.72(18.3) 0.56(14.2)
1S10BS - - Socket/Female 1/8 1/8 1/8-28 Male BSPP 1 1.00(25.4) 0.72(18.3) 0.56(14.2)
2S15 - LL2S15 Socket/Female 1/4 1/4 1/4-18 Male NPTF 1 1.72(43.7) 0.97(24.6) 0.81(20.6)
3S20 - LL3S20 Socket/Female 3/8 3/8 3/8-18 Male NPTF 1 1.75(44.5) 1.16(29.5) 1.00(25.4)
3S20BS - LL3S20BS Socket/Female 3/8 3/8 3/8-19 Male BSPP 1 1.71(43.4) 1.16(29.5) 1.00(25.4)
4S25 - LL4S25 Socket/Female 1/2 1/2 1/2-14 Male NPTF 1 2.03(51.6) 1.34(34.0) 1.13(28.7)
4S25BS - LL4S25BS Socket/Female 1/2 1/2 1/2-14 Male BSPP 1 1.80(45.7) 1.34(34.0) 1.13(28.7)
6S30 - LL6S30 Socket/Female 3/4 3/4 3/4-14 Male NPTF 1 2.22(56.4) 1.72(43.7) 1.44(36.6)
6S30BS - - Socket/Female 3/4 3/4 3/4-14 Male BSPP 1 2.03(51.6) 1.72(43.7) 1.44(36.6)
8S35 - - Socket/Female 1 1 1-11 1/2 Male NPTF 1 2.53(64.3) 2.03(51.6) 1.75(44.5)
8S35BS - - Socket/Female 1 1 1-11 Male BSPP 1 2.37(60.2) 2.03(51.6) 1.75(44.5)
Dimensions ST Series - Male Plug (Male End Connections)
Figure 2
Part NumberBrass Part NumberSteel Part Number303 Stainless Steel Coupling Type Body Size Port Size Thread Type Figure Dimensions
C D Hex
in(mm) in(mm) in(mm)
B1T10 1T10E LL1T10 Plug/Male 1/8 1/8 1/8-27 Male NPTF 2 1.06(26.9) 0.51(13.0) 0.44(11.2)
B1T15 1T15 - Plug/Male 1/8 1/4 1/4-18 Male NPTF 2 1.22(31.0) 0.65(16.5) 0.56(14.2)
B2T15 2T15 LL2T15 Plug/Male 1/4 1/4 1/4-18 Male NPTF 2 1.56(39.6) 0.65(16.5) 0.56(14.2)
- - HL2T15* Plug/Male 1/4 1/4 1/4-18 Male NPTF 2 1.56(39.6) 0.65(16.5) 0.56(14.2)
B2T15BS - LL2T15BS Plug/Male 1/4 1/4 1/4-19 Male BSPP 2 1.46(37.1) 0.87(22.1) 0.75(19.1)
B3T20 3T20 LL3T20 Plug/Male 3/8 3/8 3/8-18 Male NPTF 2 1.69(42.9) 0.79(20.1) 0.69(17.5)
- - HL3T20* Plug/Male 3/8 3/8 3/8-18 Male NPTF 2 1.69(42.9) 0.79(20.1) 0.69(17.5)
B3T20BS - LL3T20BS Plug/Male 3/8 3/8 3/8-19 Male BSPP 2 1.50(38.1) 1.01(25.7) 0.88(22.4)
B4T25 4T25 LL4T25 Plug/Male 1/2 1/2 1/2-14 Male NPTF 2 2.01(51.1) 1.01(25.7) 0.88(22.4)
B4T25BS - LL4T25BS Plug/Male 1/2 1/2 1/2-14 Male BSPP 2 1.82(46.2) 1.15(29.2) 1.00(25.4)
B6T30 6T30 LL6T30 Plug/Male 3/4 3/4 3/4-14 Male NPTF 2 2.20(55.9) 1.23(31.2) 1.06(26.9)
B6T30BS - LL6T30BS Plug/Male 3/4 3/4 3/4-14 Male BSPP 2 2.08(52.8) 1.44(36.6) 1.25(31.8)
B8T35 8T35 LL8T35 Plug/Male 1 1 1-11 1/2 Male NPTF 2 2.49(63.2) 1.59(40.4) 1.38(35.1)
B8T35BS - - Plug/Male 1 1 1-11 Male BSPP 2 2.36(59.9) 2.02(51.3) 1.75(44.5)
B10T40 10T40 LL10T40 Plug/Male 1 1/4 1 1/4 1 1/4-11 1/2 Male NPTF 2 2.72(69.1) 2.02(51.3) 1.75(44.5)
B10T40BS - - Plug/Male 1 1/4 1 1/4 1 1/4-11 Male BSPP 2 2.55(64.8) 2.31(58.7) 2.00(50.8)
B12T45 12T45 - Plug/Male 1 1/2 1 1/2 1 1/2-11 1/2 Male NPTF 2 3.31(84.1) 2.60(66.0) 2.25(57.2)
B12T45BS - - Plug/Male 1 1/2 1 1/2 1 1/2-11 Male BSPP 2 3.06(77.7) 2.6(66.0) 2.25(57.2)
B16T50 16T50 LL16T50 Plug/Male 2 2 2-11 1/2 Male NPTF 2 3.50(88.9) 3.18(80.8) 2.75(69.9)
B20T55 - - Plug/Male 2 1/2 2 1/2 2 1/2-8 Male NPTF 2 4.24(107.7) 3.75(95.3) 3.25(82.6)
* High impulse heat treated 416 stainless steel ST Series Dust Caps and Dust Plugs
Series Dust Cap Dust Plug
2ST - PSDC1HK
3ST - PSDC2HK
6ST PPDC4HK PSDC4HK
8ST PPDC6HK -
10ST PPDC8HK -
Danfoss (Eaton - Aeroquip)

Danfoss (Eaton - Aeroquip)

Danfoss is a global technology leader in power management solutions that make electrical, hydraulic and mechanical power operate more efficiently, reliably, safely and sustainably. Danfoss hydraulic pumps, motors, transmissions, valves, cylinders, controls, hose and fittings offer a unique combination of proven technology and innovative design that translates directly into reliable performance and enhanced uptime.

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