16S51BS Hansen® by Danfoss | Quick Disconnect Coupling | ST Series | 2" Female BSPP x 2" Body Size | Socket | NBR Seal | Brass (with Steel Sleeve)

$0.00 - $0.00

$0.00

$348.90

$348.90 - $348.90

$348.90

Hansen® by Danfoss
ST Series | Female Thread End Connections

Fluid Transfer and Hydraulic Quick Disconnect Coupling

Danfoss Hansen 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.

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Shipping will calculate as free instantly if your order value exceeds $5000.

Some exceptions apply.

Free Freight is only available for the Contiguous USA.

Specifications for Variant SKU: 16S51BS Danfoss
Brand:	Hansen
Series:	ST Series
Shape (Orientation):	Straight
Material(s):	Brass, Steel
Seal Material(s):	Buna-N/Nitrile Rubber

Product Features:	Ball-latching mechanism. Smooth bore permits free flow of liquid or gas.
Applications & Markets:	Fluid Transfer Chemical Food and Beverage Injection Molding Marine Medical Pressure Washing Steam Cleaning
Materials:	Standard body material: Brass, 303 Stainless Steel, Steel Standard seal material: Nitrile (NBR)
European Pressure Equipment Directive:	Couplings with nominal diameters up to and including 25 mm are designed and manufactured under Article 4.3 of the European Pressure Equipment Directive PED 2014/68/EU. Couplings with nominal diameters greater than 25 mm are designed and manufactured in accordance with the stipulations of Module A of the European Pressure Equipment Directive PED 2014/68/EU. They should not be used to convey unstable gases.

Series	Body Size	Max. Operating Pressure Brass Socket & Plug**		Max. Operating Pressure Brass Socket & Steel Plug**		Max. Operating Pressure Stainless Socket & Plug**		Max. Operating Pressure Hazardous Liquids and Gases Group 1		Min. Burst Pressure*		Rated Flow
Series	Body Size	bar	psi	bar	psi	bar	psi	bar	psi	bar	psi	Rated Flow
1ST	1/8"	193 bar	2,800 psi	234 bar	3,400 psi	290 bar	4,200 psi	*** bar	*** psi	772 bar	11,200 psi	10 lpm	2.7 gpm
2ST	1/4"	359 bar	5,200 psi	379 bar	5,500 psi	517 bar	7,500 psi	*** bar	*** psi	1,436 bar	20,800 psi	21 lpm	5.6 gpm
3ST	3/8"	193 bar	2,800 psi	290 bar	4,200 psi	434 bar	6,300 psi	*** bar	*** psi	772 bar	11,200 psi	57 lpm	15 gpm
4ST	1/2"	152 bar	2,200 psi	241 bar	3,500 psi	248 bar	3,600 psi	*** bar	*** psi	608 bar	8,800 psi	83 lpm	22 gpm
6ST	3/4"	117 bar	1,700 psi	145 bar	2,100 psi	207 bar	3,000 psi	*** bar	*** psi	468 bar	6,800 psi	250 lpm	66 gpm
8ST	1"	90 bar	1,300 psi	138 bar	2,000 psi	138 bar	2,000 psi	*** bar	*** psi	360 bar	5,200 psi	530 lpm	140 gpm
10ST	1-1/4"	117 bar	1,700 psi	186 bar	2,700 psi	152 bar	2,200 psi	*** bar	*** psi	468 bar	6,800 psi	697 lpm	184 gpm
12ST	1-1/2"	97 bar	1,400 psi	152 bar	2,200 psi	172 bar	2,500 psi	33 bar	480 psi	388 bar	5,600 psi	1,124 lpm	297 gpm
16ST	2"	97 bar	1,400 psi	152 bar	2,200 psi	103 bar	1,500 psi	27 bar	390 psi	388 bar	5,600 psi	1,855 lpm	490 gpm
20ST	2-1/2"	62 bar	900 psi	103 bar	1,500 psi	-	-	20 bar	290 psi	248 bar	3,600 psi	3,131 lpm	827 gpm

*For Brass socket and plug. Other materials have 4 to 1 safety factor
** Operating pressure for Non Hazardous liquids and gases from Group 2
*** Operating pressure is same as Non Hazardous liquids and gases from Group 2 for this size


Socket/Female (Figure 1)
ST Series \| Sockets \| Female Threaded Ends
Brass Part Number	303 Stainless Steel Part Number	Body Size	Type	Port Size	Male Thread	Figure	Dimensions
NBR Seal	NBR Seal	Body Size	Type	Port Size	Male Thread	Figure	A	B	Hex
1S11	LL1S11	1/8"	Socket/Female	1/8"	1/8-27 Female NPTF	1	1.06" (26.9mm)	0.72" (18.3mm)	0.56" (14.2mm)
1S11BS	LL1S11BS	1/8"	Socket/Female	1/8"	1/8-28 Female BSPP	1	1.03" (26.2mm)	0.72" (18.3mm)	0.56" (14.2mm)
2S16	LL2S16	1/4"	Socket/Female	1/4"	1/4-18 Female NPTF	1	1.5" (38.1mm)	0.97" (24.6mm)	0.81" (20.6mm)
2S16BS	LL2S16BS	1/4"	Socket/Female	1/4"	1/4-19 Female BSPP	1	1.5" (38.1mm)	0.97" (24.6mm)	0.81" (20.6mm)
3S21	LL3S21	3/8"	Socket/Female	3/8"	3/8-18 Female NPTF	1	1.59" (40.4mm)	1.16" (29.5mm)	1.00" (25.4mm)
3S21BS	LL3S21BS	3/8"	Socket/Female	3/8"	3/8-19 Female BSPP	1	1.59" (40.4mm)	1.16" (29.5mm)	1.00" (25.4mm)
4S26	LL4S26	1/2"	Socket/Female	1/2"	1/2-14 Female NPTF	1	1.91" (48.5mm)	1.34" (34.0mm)	1.13" (28.7mm)
4S26BS	LL4S26BS	1/2"	Socket/Female	1/2"	1/2-14 Female BSPP	1	1.91" (48.5mm)	1.34" (34.0mm)	1.13" (28.7mm)
6S31	LL6S31	3/4"	Socket/Female	3/4"	3/4-14 Female NPTF	1	2.06" (52.3mm)	1.72" (43.7mm)	1.44" (36.6mm)
6S31BS	LL6S31BS	3/4"	Socket/Female	3/4"	3/4-14 Female BSPP	1	2.06" (52.3mm)	1.72" (43.7mm)	1.44" (36.6mm)
8S36	LL8S36	1"	Socket/Female	1"	1-11-1/2 Female NPTF	1	2.33" (59.2mm)	2.03" (51.6mm)	1.75" (44.5mm)
8S36BS	LL8S36BS	1"	Socket/Female	1"	1-11 Female BSPP	1	2.33" (59.2mm)	2.03" (51.6mm)	1.75" (44.5mm)
10S41*	LL10S41	1-1/4"	Socket/Female	1-1/4"	1-1/4-11-1/2 Female NPTF	1	2.44" (62.0mm)	2.5" (63.5mm)	2.00" (50.8mm)
10S41BS*	-	1-1/4"	Socket/Female	1-1/4"	1-1/4-11 Female BSPP	1	2.51" (63.8mm)	2.50" (63.5mm)	2.00" (50.8mm)
12S46*	LL12S46	1-1/2"	Socket/Female	1-1/2"	1-1/2-11-1/2 Female NPTF	1	2.88" (73.2mm)	3.13" (79.5mm)	2.60" (66.0mm)
12S46BS*	LL12S46BS	1-1/2"	Socket/Female	1-1/2"	1-1/2-11 Female BSPP	1	2.88" (73.2mm)	3.13" (79.5mm)	2.63" (66.8mm)
16S51*	LL16S51	2"	Socket/Female	2"	2-11-1/2 Female NPTF	1	3.09" (78.5mm)	3.75" (95.3mm)	3.00" (76.2mm)
16S51BS*	-	2"	Socket/Female	2"	2-11 Female BSPP	1	3.3" (83.8mm)	3.75" (95.3mm)	3.00" (76.2mm)
20S56*	-	2-1/2"	Socket/Female	2-1/2"	2-1/2-8 Female NPTF	1	3.44" (87.4mm)	4.50" (114.3mm)	3.50" (88.9mm)


Plug/Male (Figure 2)
ST Series \| Plugs \| Female Threaded Ends
Brass Part Number	Steel Part Number	303 Stainless Steel Part Number	Body Size	Type	Port Size	Male Thread	Figure	Dimensions
NBR Seal	NBR Seal	NBR Seal	Body Size	Type	Port Size	Male Thread	Figure	C	D	Hex
B1T11	1T11	LL1T11	1/8"	Plug/Male	1/8"	1/8-27 Female NPTF	2	0.97" (24.6mm)	0.58" (14.7mm)	0.50" (12.7mm)
B1T11BS	-	LL1T11BS	1/8"	Plug/Male	1/8"	1/8-28 Female BSPP	2	0.97" (24.6mm)	0.65" (16.5mm)	0.56" (14.2mm)
B2T16	2T16	LL2T16	1/4"	Plug/Male	1/4"	1/4-18 Female NPTF	2	1.45" (36.8mm)	0.79" (20.1mm)	0.69" (17.5mm)
-	-	HL2T16**	1/4"	Plug/Male	1/4"	1/4-18 Female NPTF	2	1.45" (36.8mm)	0.79" (20.1mm)	0.69" (17.5mm)
B2T16BS	-	LL2T16BS	1/4"	Plug/Male	1/4"	1/4-19 Female BSPP	2	1.45" (36.8mm)	0.87" (22.1mm)	0.75" (19.1mm)
B3T21	3T21	LL3T21	3/8"	Plug/Male	3/8"	3/8-18 Female NPTF	2	1.63" (41.4mm)	0.94" (23.9mm)	0.81" (20.6mm)
-	-	HL3T21**	3/8"	Plug/Male	3/8"	3/8-18 Female NPTF	2	1.63" (41.4mm)	0.94" (23.9mm)	0.81" (20.6mm)
B3T21BS	-	LL3T21BS	3/8"	Plug/Male	3/8"	3/8-19 Female BSPP	2	1.63" (41.4mm)	1.01" (25.7mm)	0.88" (22.4mm)
B4T26	4T26	LL4T26	1/2"	Plug/Male	1/2"	1/2-14 Female NPTF	2	1.92" (48.8mm)	1.15" (29.2mm)	1.00" (25.4mm)
B4T26BS	-	LL4T26BS	1/2"	Plug/Male	1/2"	1/2 -14 Female BSPP	2	1.92" (48.8mm)	1.23" (31.2mm)	1.06" (26.9mm)
B6T31	6T31	LL6T31	3/4"	Plug/Male	3/4"	3/4-14 Female NPTF	2	2.01" (51.1mm)	1.37" (34.8mm)	1.19" (30.2mm)
B6T31BS	-	LL6T31BS	3/4"	Plug/Male	3/4"	3/4-14 Female BSPP	2	2.01" (51.1mm)	1.51" (38.4mm)	1.31" (33.3mm)
B8T36	8T36	LL8T36	1"	Plug/Male	1"	1-11-1/2 Female NPTF	2	2.21" (56.1mm)	1.80" (45.7mm)	1.56" (39.6mm)
B8T36BS	-	LL8T36BS	1"	Plug/Male	1"	1-11 Female BSPP	2	2.23" (56.6mm)	1.80" (45.7mm)	1.56" (39.6mm)
B10T41	10T41	LL10T41	1-1/4"	Plug/Male	1-1/4"	1-1/4-11-1/2 Female NPTF	2	2.34" (59.4mm)	2.31" (58.7mm)	2.00" (50.8mm)
B10T41BS	-	-	1-1/4"	Plug/Male	1-1/4"	1-1/4-11 Female BSPP	2	2.53" (64.3mm)	2.31" (58.7mm)	2.00" (50.8mm)
B12T46	12T46	LL12T46	1-1/2"	Plug/Male	1-1/2"	1-1/2-11-1/2 Female NPTF	2	2.88" (73.2mm)	2.60" (66.0mm)	2.25" (57.2mm)
B12T46BS	-	-	1-1/2"	Plug/Male	1-1/2"	1-1/2-11 Female BSPP	2	2.88" (73.2mm)	2.60" (66.0mm)	2.25" (57.2mm)
B16T51	-	16T51	2"	Plug/Male	2"	2-11-1/2 Female NPTF	2	3.03" (77.0mm)	3.18" (80.8mm)	2.75" (69.9mm)
B16T51BS	-	-	2 "	Plug/Male	2"	2-11 Female BSPP	2	3.25" (82.6mm)	3.18" (80.8mm)	2.75" (69.9mm)
B20T56	-	20T56	2-1/2"	Plug/Male	2-1/2"	2 1/2-8 Female NPTF	2	3.37" (85.6mm)	3.75" (95.3mm)	3.25" (82.6mm)

* With Steel Sleeve

**High impulse heat treated 416 stainless steel.

Danfoss (Eaton - Aeroquip)

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