Fax             706-265-1477

Toll Free     855-457-4474

Text           770-887-0470

Phone         770-887-0470

Air Products Company is a leading distributor, serving this industry for the last 72 years, specializing in the sales and service of the Danfoss Hansen quick disconnect couplings, Graco pumps, sprayers, industrial fluid handling, and Fastest Inc line of leak detection equipment and fittings. 

Part Number
303 Stainless Steel
Part Number
316 Stainless Steel
Body Size (Inch) ISO Size (mm) Thread Size Figure
NPTF BSPP SAE
LL1K11 ML1K11 1/8 5 1/8-27 - - 3
LL1K4 - 1/8 5 - - 7/16-20 3
LL2K16 ML2K16 1/4 6.3 1/4-18 - - 3
LL2K16BS ML2K16BS 1/4 6.3 - 1/4-19 - 3
LL2K6 - 1/4 6.3 - - 9/16-18 3
LL3K21 ML3K21 3/8 10 3/8-18 - - 3
LL3K21BS ML3K21BS 3/8 10 - 3/8-19 - 3
LL3K8 - 3/8 10 - - 3/4-16 3
LL4KP26 ML4KP26 1/2 12.5 1/2-14 - - 3
LL4KP26BS ML4KP26BS 1/2 12.5 - 1/2-14 - 3
LL4KP10 - 1/2 12.5 - - 7/8-14 3
LL6KP31 ML6KP31 3/4 20 3/4-14 - - 3
LL6KP31BS ML6KP31BS 3/4 20 - 3/4-14 - 3
LL6KP12 - 3/4 20 - - 1 1/16-12 3
LL8KP36 ML8KP36 1 25 1-11 1/2 - - 3
LL8KP36BS ML8KP36BS 1 25 - 1-11 - 3
LL8KP16 - 1 25 - - 1 5/16-12 3
HANSEN LL2H8MS

* For questions related to vacuum please contact us. ** No ISO Standard available for the 10HK

Part Number Body Size (inch) ISO Size Thread Size Figure
LL2H8MS 1/4 - 3/4-16 37° Flare 1
LL2K6MS1 1/4 - 9/16-18 37° Flare 2
LLSDC2HKS Dust Cap - - 3
  • • Self-sealing poppet valves provide excellent high and low pressure sealing
  • Standard body material: 303 or 316 Stainless Steel

The Hansen HK Series stainless steel is a general purpose industrial interchange coupling available in valved or non-valved designs, offered in 303/316 grades of stainless steel for excellent corrosion resistance in rugged applications. The HK Series features a ball latch mechanism with automatic self-sealing poppet valves.

HANSEN LLSDC2HKS
Part Number
303 Stainless Steel
Part Number
316 Stainless Steel
Body Size (Inch) ISO Size (mm) Thread Size Figure
NPTF BSPP SAE
LL1H11 ML1H11 1/8 5 1/8-27 - - 1
LL1H4 - 1/8 5 - - 7/16-20 1
LL2H16 ML2H16 1/4 6.3 1/4-18 - - 1
LL2H16BS ML2H16BS 1/4 6.3 - 1/4-19 - 1
LL2H6 - 1/4 6.3 - - 9/16-8 1
LL3H21 ML3H21 3/8 10 3/8-18 - - 1
LL3H21BS ML3H21BS 3/8 10 - 3/8-19 - 1
LL3H8 - 3/8 10 - - 3/4-16 1
LL4HP26 ML4HP26 1/2 12.5 1/2-14 - - 1
LL4HP26BS ML4HP26BS 1/2 12.5 - 1/2-14 - 1
LL4HP10 - 1/2 12.5 - - 7/8-14 1
LL6HP31 ML6HP31 3/4 20 3/4-14 - - 1
LL6HP31BS ML6HP31BS 3/4 20 - 3/4-14 - 1
LL6HP12 - 3/4 20 - - 1 1/8-12 1
LL8HP36 ML8HP36 1 25 1-11 1/2 - - 1
LL8HP36BS ML8HP36BS 1 25 - 1-11 - 1
LL8HP16 - 1 25 - - 1 5/16-12 1

* ISO 7241-1 Series B does not include 1-¼ inch body size couplings; therefore, Series 10HK is not covered by this standard

Part Number Body Size (Inch) ISO Size (mm) Thread Size Figure
NPTF BSPP SAE
LL10K41* 1 1/4 - 1 1/4-11 1/2 - - 4
LL10K41BS* 1 1/4 - - 1 1/4-11 - 4
LL12K41 1 1/2 40 1 1/4-11 1/2 - - 4
LL12K41BS 1 1/2 40 - 1 1/4-11 - 4
LL12K46 1 1/2 40 1 1/2-11 1/2 - - 4
LL12K46BS 1 1/2 40 - 1 1/2-11 - 4
LL20K51 2 1/2 50 2-11 1/2 - - 4
LL20K51BS 2 1/2 50 - 2-11 - 4
LL20K56 2 1/2 50 2 1/2-8 - - 4
LL20K56BS 2 1/2 50 - 2 1/2-11 - 4
LL20K61 2 1/2 50 3-8 - - 4
LL20K61BS 2 1/2 50 - 3-11 - 2
Series Body Size ISO Size Nominal Flow Size Max Operating Pressure Rated Flow Air Inclusion Fluid Loss
(in) (mm) (mm) (PSI) (GPM) (cc max) (cc max)
1HK 1/8 5 4.4 4000 .8 .6 .5
2HK 1/4 6.3 5.9 5000 3 1.2 .9
3HK 3/8 10 7.8 4000 6 2.9 2.1
4HK 1/2 12.5 10 5000 12 3.6 3.5
6HK 3/4 20 17 4000 26 11.5 9.3
8HK 1 25 19.6 4000 50 18 16.9
10HK 1 1/4** - 26.7 1700 76 48 48
12HK 1 1/2 40 35.1 2200 99 91.3 91.3
20HK 2 1/2 50 46 1500 200 209.9 209.9
Part Number
303 Stainless Steel
Body Size (Inch) ISO Size (mm) Thread Size Figure
NPTF BSPP
LL10H41* 1 1/4 - 1 1/4-11 1/2 - 2
LL10H41BS* 1 1/4 - - 1 1/4-11 2
LL12H41 1 1/2 40 1 1/4-11 1/2 - 2
LL12H41BS 1 1/2 40 - 1 1/4-11 2
LL12H46 1 1/2 40 1 1/2-11 1/2 - 2
LL12H46BS 1 1/2 40 - 1 1/2-11 2
LL20H51 2 1/2 50 2-11 1/2 - 2
LL20H51BS 2 1/2 50 - 2-11 2
LL20H56 2 1/2 50 2 1/2-8 - 2
LL20H56BS 2 1/2 50 - 2 1/2-11 2
LL20H61 2 1/2 50 3-8 - 2
LL20H61BS 2 1/2 50 - 3-11 2

Figure 2

Figure 3

  • Meets dimensional requirements to ISO standard 7241-1 Series B
  • 303/316 Stainless steel construction for greater corrosion resistance and fluid compatibility
HANSEN LL2K6MS1
Seal Elastomer Max Operating Temperature
Buna-N -40°C to 121°C / 40°F to 150°F
Neoprene -54°C to 100°C / -65°F to 212°F
EPDM (Ethelene Propylene Rubber) -54°C to 149°C / -65°F to 300°F
FKM (Viton) -29°C to 204°C / -15°F to 400°F
COUPLING SERIES METAL PLUG DUST CAP VINYL PLUG DUST CAP METAL SOCKET DUST CAP VINYL SOCKET DUST CAP
1HK PDC1HK* PPDC1HK SDC1HK* PSDC1HK
2HK PDC2HK* PPDC2HK SDC2HK* PSDC2HK
3HK PDC3HK* PPDC3HK SDC3HK* PSDC3HK
4HK PDC4HK** PPDC4HK
PPDC4HKRD
SDC4HK** PSDC4HK
PSDC4HKRD
6HK PDC6HK** PPDC6HK
PPDC6HKRD
SDC6HK** PSDC6HK
PSDC6HKRD
8HK PDC8HK** PPDC8HK
PPDC8HKRD
SDC8HK** PSDC8HK
PSDC8HKRD
12HK PDC12HK* - SDC12HK* -
20HK PDC20HK* - SDC20HK* -

Physical Characteristics

* ISO 7241-1 Series B does not include 1-¼ inch body size couplings; therefore, Series 10HK is not covered by this standard

Figure 2

Applications & Markets

Figure 1

  • Standard seal material: Buna-N
  • Seal options available in PTFE, Neoprene, FKM, EPDM, and Kalrez
  • Optional Sleeve Lock 

Figure 3

• Agriculture

• Hydraulic Tool

• General Industry

• Construction

• Fluid Transfer

• Transportation

• Military

• Law Enforcement/Rescue

• Chemical

• Oil and Gas

• Consumer Products

• HVAC

• Food and Beverage

• Trucks

• Aerospace

• Medical 

Figure 4

*Brass **Aluminum ***Offered in red by adding RD to end of part number

Product Features

Figure 1

HANSEN HK SERIES STAINLESS STEEL
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