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
SPECIFICATIONS
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| 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) | |||||||
| B1K11192 | EPDM† | Yes | 1/8 | 5 | 1/8-27 | – | 1.26(32.0) | 0.65(16.5) | 0.44(11.2) | 0.56(14.2) |
| B2K16192 | EPDM† | Yes | 1/4 | 6.3 | 1/4-18 | – | 1.52(38.6) | 0.87(22.1) | 0.56(14.2) | 0.75(19.1) |
| B3K21192 | EPDM† | Yes | 3/8 | 10 | 3/8-18 | – | 1.76(44.7) | 1.01(25.7) | 0.61(15.5) | 0.88(22.4) |
| B3K21BS192 | EPDM† | Yes | 3/8 | 10 | – | 3/8-19 | 1.76(44.7) | 1.01(25.7) | 0.61(15.5) | 0.88(22.4) |
| B4KP26192 | EPDM† | Yes | 1/2 | 12.5 | 1/2-14 | – | 2.03(51.6) | 1.30(33.0) | 0.76(19.3) | 1.13(28.7) |
| B4KP26236 | EPDM† | Yes | 1/2 | 12.5 | 1/2-14 | – | 2.03(51.6) | 1.30(33.0) | 0.76(19.3) | 1.13(28.7) |
| B4KP26BS192 | EPDM† | Yes | 1/2 | 12.5 | – | 1/2-14 | 2.03(51.6) | 1.30(33.0) | 0.76(19.3) | 1.13(28.7) |
| B6KP31192 | EPDM† | Yes | 3/4 | 20 | 3/4-14 | – | 2.36(59.9) | 1.52(38.6) | 0.71(18.0) | 1.31(33.3) |
| B6KP31236 | EPDM† | Yes | 3/4 | 20 | 3/4-14 | – | 2.36(59.9) | 1.52(38.6) | 0.71(18.0) | 1.31(33.3) |
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