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B20K56BS Eaton Hanson HK 10/12/20 Series Male Plug - Female 2 1/2-11 BSPP VALVED - ISO 7241-1-B Interchange Brass Quick Disconnect - Standard Buna-N Seal


PRODUCT DESCRIPTION

Eaton HK 10/12/20 Series - ISO 7241-1 B Interchange - Plugs (Male) - Brass
 
Eaton's HK brass is a general purpose industrial interchange coupling available in valved or non-valved designs, offered in brass for excelllent corrosion resistance in rugged applications where stainless steel is unacceptable. The HK Series features a ball latch mechanism with automatic self-sealing poppet valves.

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:
  • Agriculture / Chemical
  • Hydraulic Tool / Oil and Gas
  • General Industry / Transportation
  • Construction / Food and Beverage
  • Fluid Transfer / Trucks
  • Nuclear
Features: Meets dimensional
requirements to ISO
Standard 7241-1 Series B
303/316 Stainless Steel construction
for greater corrosion
resistance and fluid compatibility
Self-sealing poppet valve
design provides excellent
high and low pressure sealing
Standard body
material:
303 or 316 Stainless Steel
Standard seal material:
Buna-N

Seal options available:
PTFE, Neoprene,
EPDM, FKM or Kalrez®
Seal Elastomer Data
Elastomer Buna-N Neoprene EPDM
**not compatible with
mineral-based greases or oils
FKM
(Fluorocarbon)
PTFE Kalrez®
Application
Specification
None None None MIL-R-25897 Contact Eaton for additional information Contact Eaton for additional information
Max. Operation
Temperature Range
-40°C to +121°C
40°F to +250°F
-54°C to +100°C
-65°F to +212°F
-54°C to +149°C
-65°F to +300°F
-29°C to +204°C
-15°F to +400°F
Contact Eaton for additional information Contact Eaton for additional information
**Based on Eaton recommended temperatures (for reference only)
For seals not listed call 330-535-7105

Physical Characteristics

Series Body Size ISO Size Nominal Flow
Diameter
Max. Operating
Pressure
Rated Flow Air Inclusion Fluid Loss
in mm mm bar psi lpm gpm cc.max. cc.max.
1HK 1/8 5 4.4 207 3000 3 0.8 0.6 0.5
2HK 1/4 6.3 5.9 186 2700 12 3 1.2 0.9
3HK 3/8 10 7.8 152 2200 23 6 2.9 2.1
4HK 1/2 12.5 10 155 2250 45 12 3.6 3.5
6HK 3/4 20 17 138 2000 100 26 11.5 9.3
8HK 1 25 19.6 103 1500 189 50 18.0 16.9
10HK 1 1/4** - 26.7 83 1200 288 76 48.0 48.0
12HK 1 1/2 40 35.1 104 1500 375 99 91.3 91.3
20HK 2 1/2 50 46 49 700 757 200 209.9 209.9
*For questions related to vacuum please contact Eaton
**No ISO Standard available for the 10HK

NV = No Valve | VAA = Valve Actuator Assembly | BV = Bleeder Valve (Plugs Only)
Part
Number
Seal
Elastomer
Valved Body Size ISO Size Thread Size (Female) Dimensions
in mm NPTF BSPP C D E Hex
in
(mm)
in
(mm)
in
(mm)
in
(mm)
B10K41* Standard
Buna-N
Yes 1 1/4 - 1 1/4-11 1/2 - 4.25
(108.0)
2.74
(69.6)
2.33
(59.2)
2.38
(60.5)
B10K41143* FKM Yes 1 1/4 - 1 1/4-11 1/2 - 4.25
(108.0)
2.74
(69.6)
2.33
(59.2)
2.38
(60.5)
B10K41192* EPDM† Yes 1 1/4 - 1 1/4-11 1/2 - 4.25
(108.0)
2.74
(69.6)
2.33
(59.2)
2.38
(60.5)
B10K41BS* Standard
Buna-N
Yes 1 1/4 - - 1 1/4-11 4.25
(108.0)
2.74
(69.6)
2.33
(59.2)
2.38
(60.5)
B10K41BS192* EPDM† Yes 1 1/4 - - 1 1/4-11 4.25
(108.0)
2.74
(69.6)
2.33
(59.2)
2.38
(60.5)
B10K41NV* Standard
Buna-N
No 1 1/4 - 1 1/4-11 1/2 - 4.25
(108.0)
2.74
(69.6)
2.33
(59.2)
2.38
(60.5)
B10K41NV143* FKM No 1 1/4 - 1 1/4-11 1/2 - 4.25
(108.0)
2.74
(69.6)
2.33
(59.2)
2.38
(60.5)
B10K41NV192* EPDM† No 1 1/4 - 1 1/4-11 1/2 - 4.25
(108.0)
2.74
(69.6)
2.33
(59.2)
2.38
(60.5)
 
B12K41 Standard
Buna-N
Yes 1 1/2 40 1 1/4-11 1/2 - 4.76
(120.9)
2.74
(69.6)
2.67
(67.8)
2.38
(60.5)
B12K41143 FKM Yes 1 1/2 40 1 1/4-11 1/2 - 4.76
(120.9)
2.74
(69.6)
2.67
(67.8)
2.38
(60.5)
B12K41146 Special
Buna-N‡
Yes 1 1/2 40 1 1/4-11 1/2 - 4.76
(120.9)
2.74
(69.6)
2.67
(67.8)
2.38
(60.5)
B12K41192 EPDM† Yes 1 1/2 40 1 1/4-11 1/2 - 4.76
(120.9)
2.74
(69.6)
2.67
(67.8)
2.38
(60.5)
B12K41VAA Standard
Buna-N
No 1 1/2 40 1 1/4-11 1/2 - 4.76
(120.9)
2.74
(69.6)
2.67
(67.8)
2.38
(60.5)
B12K41BS Standard
Buna-N
Yes 1 1/2 40 - 1 1/4-11 4.76
(120.9)
2.74
(69.6)
2.67
(67.8)
2.38
(60.5)
 
B12K46 Standard
Buna-N
Yes 1 1/2 40 1 1/2-11 1/2 - 4.76
(120.9)
2.74
(69.6)
2.67
(67.8)
2.38
(60.5)
B12K46143 FKM Yes 1 1/2 40 1 1/2-11 1/2 - 4.76
(120.9)
2.74
(69.6)
2.67
(67.8)
2.38
(60.5)
B12K46146 Special
Buna-N‡
Yes 1 1/2 40 1 1/2-11 1/2 - 4.76
(120.9)
2.74
(69.6)
2.67
(67.8)
2.38
(60.5)
B12K46192 EPDM† Yes 1 1/2 40 1 1/2-11 1/2 - 4.76
(120.9)
2.74
(69.6)
2.67
(67.8)
2.38
(60.5)
B12K46BS Standard
Buna-N
Yes 1 1/2 40 - 1 1/2-11 4.76
(120.9)
2.74
(69.6)
2.67
(67.8)
2.38
(60.5)
B12K46NV Standard
Buna-N
No 1 1/2 40 1 1/2-11 1/2 - 4.76
(120.9)
2.74
(69.6)
2.67
(67.8)
2.38
(60.5)
B12K46VAA Standard
Buna-N
No 1 1/2 40 1 1/2-11 1/2 - 4.76
(120.9)
2.74
(69.6)
2.67
(67.8)
2.38
(60.5)
 
B20K51 Standard
Buna-N
Yes 2 1/2 50 2-11 1/2 - 5.49
(139.4)
4.33
(110.0)
2.97
(75.4)
3.75
(95.3)
B20K51143 FKM Yes 2 1/2 50 2-11 1/2 - 5.49
(139.4)
4.33
(110.0)
2.97
(75.4)
3.75
(95.3)
B20K51146 Special Buna-N‡ Yes 2 1/2 50 2-11 1/2 - 5.49
(139.4)
4.33
(110.0)
2.97
(75.4)
3.75
(95.3)
B20K51192 EPDM† Yes 2 1/2 50 2-11 1/2 - 5.49
(139.4)
4.33
(110.0)
2.97
(75.4)
3.75
(95.3)
B20K51BS Standard
Buna-N
Yes 2 1/2 50 - 2-11 5.49
(139.4)
4.33
(110.0)
2.97
(75.4)
3.75
(95.3)
B20K51NV Standard
Buna-N
No 2 1/2 50 2-11 1/2 - 5.49
(139.4)
4.33
(110.0)
2.97
(75.4)
3.75
(95.3)
B20K51VAA Standard
Buna-N
No 2 1/2 50 2-11 1/2 - 5.49
(139.4)
4.33
(110.0)
2.97
(75.4)
3.75
(95.3)
B20K51VAA143 FKM No 2 1/2 50 2-11 1/2 - 5.49
(139.4)
4.33
(110.0)
2.97
(75.4)
3.75
(95.3)
 
B20K56 Standard
Buna-N
Yes 2 1/2 50 2 1/2-8 - 6.08
(154.4)
4.33
(110.0)
3.56
(90.4)
3.75
(95.3)
B20K56143 FKM Yes 2 1/2 50 2 1/2-8 - 6.08
(154.4)
4.33
(110.0)
3.56
(90.4)
3.75
(95.3)
B20K56192 EPDM† Yes 2 1/2 50 2 1/2-8 - 6.08
(154.4)
4.33
(110.0)
3.56
(90.4)
3.75
(95.3)
B20K56NV143 FKM No 2 1/2 50 2 1/2-8 - 6.08
(154.4)
4.33
(110.0)
3.56
(90.4)
3.75
(95.3)
B20K56BS Standard
Buna-N
Yes 2 1/2 60 - 2 1/2-11 6.08
(154.4)
4.33
(110.0)
3.56
(90.4)
3.75
(95.3)
 
B20K61 Standard
Buna-N
Yes 2 1/2 50 3-8 - 6.94
(176.3)
4.62
(117.3)
4.42
(112.3)
4.00
(101.6)
B20K61143 FKM Yes 2 1/2 60 3-8 - 6.94
(176.3)
4.62
(117.3)
4.42
(112.3)
4.00
(101.6)
B20K61192 EPDM† Yes 2 1/2 60 3-8 - 6.94
(176.3)
4.62
(117.3)
4.42
(112.3)
4.00
(101.6)
B20K61BS Standard
Buna-N
Yes 2 1/2 650 - 3-11 6.94
(176.3)
4.62
(117.3)
4.42
(112.3)
4.00
(101.6)
B20K61VAA Standard
Buna-N
No 2 1/2 50 3-8 - 6.94
(176.3)
4.62
(117.3)
4.42
(112.3)
4.00
(101.6)
EPDM not compatible with mineral-based greases or oils
Special Buna-N for some Petroleum Fuels

* ISO 7241-1 Series B does not include 1-¼ inch body size couplings; therefore, Series 10HK is not covered by this standard
C=Overall Length, D=Maximum Diameter, E=Exposed Length when Connected
To obtain connected length of coupling, add dimensions A (Fig. 1 Female Socket) and E (Fig. 4) together.
More Information
Part Number B20K56BS
Location Each
Series No
Material Brass
Body Size 2 1/2
Seal Material Buna-N
Thread 2 1/2-11
Coupling Type Female BSPP
End Type Plug
Other Features Valved
Gender Female
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