Danfoss PAHT 2-6.3, PAHT 10-12.5, PAHT 20-32, PAHT 50-90, PAHT 256-308 Data sheet

Data sheet

PAHT pumps

PAHT 2-6.3/PAHT/10-12.5/PAHT 20-25/ PAHT 50-90 and PAHT 256-308

hpp.danfoss.com

Data sheet	PAHT 2-308 pumps
Table of Contents	1.	Introduction . . . . . . . . . . . . . . . . . . . . . . .	. . . . .	. . . . .		. . . .	.	2
	2.	Benefits . . . . . . . . . . . . . . . . . . . . . . . . .	. . . . .	. . . . .		. . . .	.	3
	3.	Application examples . . . . . . . . . . . . . . . . . . .	. . . . .	. . . . .		. . .	.	.3
	4.	Technical data . . . . . . . . . . . . . . . . . . . . . .	. . . . .	. . . . .		. . . .	.	4
	4.1	PAHT 2-12.5 . . . . . . . . . . . . . . . . . . . . . . .	. . . . .	. . . . .		. . . .	.	4
	4.2	PAHT 20-32 . . . . . . . . . . . . . . . . . . . . . . . .	. . . . .	. . . . .		. . .	.	.5
	4.3	PAHT 50-90 . . . . . . . . . . . . . . . . . . . . . . . .	. . . . .	. . . . .		. . .	.	.6
	4.4	PAHT 256-308 . . . . . . . . . . . . . . . . . . . . . .	. . . . .	. . . . .		. . . .	.	7
	5.	Flow . . . . . . . . . . . . . . . . . . . . . . . . . . .	. . . . .	. . . . .		. . .	.	.8
	5.1	PAHT 2-6.3 typical flow curves at max pressure . . . . . .	. . . . .	. . . . .		. . .	.	.8
	5.2	PAHT 10-12.5 typical flow curves at max pressure . . . . .	. . . . .	. . . . .		. . . .	.	9
	5.3	PAHT 20-32 typical flow curves at max pressure . . . . . .	. . . . .	. . . . .		. . . . 10
	5.4	PAHT 50-90 typical flow curves at max pressure . . . . . .	. . . . .	. . . . .		. . . . 11
	5.5	PAHT 256-308 typical flow curves at max pressure . . . . .	. . . . .	. . . . .		. . . . 12
	6.	Motor requirements . . . . . . . . . . . . . . . . . . .	. . . . .	. . . . .		. . . . .13
	7.	Installation . . . . . . . . . . . . . . . . . . . . . . . .	. . . . .	. . . . .		. . . . 14
	7.1	Filtration . . . . . . . . . . . . . . . . . . . . . . . . .	. . . . .	. . . . .		. . . . 14
	7.2	Noise . . . . . . . . . . . . . . . . . . . . . . . . . .	. . . . .	. . . . .		. . . . .14
	7.3	Open-system design . . . . . . . . . . . . . . . . . . .	. . . . .	. . . . .		. . . . .15
	7.4	Closed-system design . . . . . . . . . . . . . . . . . .	. . . . .	. . . . .		. . . . .16
	8.	Dimensions and connections . . . . . . . . . . . . . . .	. . . . .	. . . . .		. . . . 17
	8.1	PAHT 2-6.3 . . . . . . . . . . . . . . . . . . . . . . . .	. . . . .	. . . . .		. . . . 17
	8.2	PAHT 10-12.5 . . . . . . . . . . . . . . . . . . . . . . .	. . . . .	. . . . .		. . . . 18
	8.3	PAHT 20-32 . . . . . . . . . . . . . . . . . . . . . . . .	. . . . .	. . . . .		. . . . 19
	8.4	PAHT 50-90 . . . . . . . . . . . . . . . . . . . . . . . .	. . . . .	. . . . .		. . . . 20
	8.5	PAHT 256-308 . . . . . . . . . . . . . . . . . . . . . .	. . . . .	. . . . .		. . . . .21
	9.	Service . . . . . . . . . . . . . . . . . . . . . . . . . .	. . . . .	. . . . .		. . .	.	22

1.	Introduction	The Danfoss range of PAHT high-pressure pumps
		is specifically designed for use with technical
		water such as:
		•	Ultra-pure water that has undergone
			multiple reverse osmosis processes
		•	De-ionized water
		•	Demineralized water

Danfoss PAHT pumps are positive displacement pumps, with axial pistons that move a fixed amount of water in each cycle. Flow is proportional to the number of input shaft revolutions (rpm). Unlike centrifugal pumps, they produce the same flow at a given speed independently of no matter what the discharge pressure.

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Data sheet	PAHT 2-308 pumps

Below sectional drawing is an example of a PAHT pump.

1:	Mounting flange
2:	Shaft seal
3:	Connecting flange
4:	Port plate
5:	Valve plate
6:	Retainer plate
7:	Swash plate
8:	End cap
9:	Spring
10: Piston
11: Cylinder barrel
12: Housing with bearing

2. Benefits	•	Zero risk of lubricant contamination:		- Pump can be installed horizontally or
		- Oil lubricants are replaced with the		vertically.
		pumped medium, water, so there is no		- No pulsation dampeners necessary due
		contamination risk from the pump.		to extremely low-pressure pulsation.
	•	Low maintenance costs:		- Powered by electric motors or combus-
		- Efficient design and all-stainless steel		tion engines.
		construction ensure exceptionally long		- Suitable for both boosted inlet
		lifetime. When Danfoss specifications		pressure and water supply from a tank.
		are met, service intervals of up to 8,000		- No need for cooling circuits due to very
		hours can be expected. Service is easy,		high mechanical efficiency.
		and can be carried out on site due to	•	Certified quality:
		the simple design and few parts.		- Fulfills the stringent hygiene require-
	•	Low energy costs:		ments, VDI 6022, HACCP.
		- The highly efficient axial piston design		- Certificates:
		provides the lowest energy consump-		ISO 9001, ISO 14001
		tion of any comparable pump on the		API available on request
		market.

•Easy installation:

-The lightest and most compact design available.

3.	Application examples	•	High-pressure cleaning with ultra-pure
			water, as used in the manufacturing of
			flat-panel displays and many other
			electronic products.
		•	High-pressure cleaning with ultra-pure
			water, as used in the manufacturing of
			parts for the automobile industry.
		•	Adiabatic cooling systems to replace or
			supplement standard A/C systems in server
			rooms and factories.

•Humidification in office buildings, electronic component manufacturing, dairies, greenhouses, etc.

•Dust suppression and odor control systems, for example in paper, textile and wood production.

•Reduction of NOx emissions in diesel engines and gas turbines.

•Gas turbine by inlet fogging and fuel wash systems.

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Data sheet		PAHT 2-308 pumps
4.	Technical data	4.1 PAHT 2-12.5
		Pump size		2	3.2	4	6.3	10		12.5
		Code number PAHT		180B0031	180B0077	180B0030	180B0029	180B0032		180B0033
		Housing material		AISI 304	AISI 304	AISI 304	AISI 304	AISI 304		AISI 304
		Geometric	cm³/rev	2	3.2	4	6.3	10		12.5
		displacement
			in³/rev	0.12	0.20	0.24	0.38	0.61		0.76
		Pressure
		Min. outlet	barg	30	30	30	30	30		30
		pressure
			psig	435	435	435	435	435		435
		Max. outlet	barg	100	100	100	100	140		140
		pressure
			psig	1450	1450	1450	1450	2031		2031
		Inlet pressure,	barg	0-4	0-4	0-4	0-4	0-4		0-4
		continuous
			psig	0-58	0-58	0-58	0-58	0-58		0-58
		Max. inlet 1)	barg	4	4	4	4	4		4
		pressure, peak
			psig	58	58	58	58	58		58
		Speed
		Min. speed	rpm	1000	1000	1000	1000	1000		1000
		Min. speed,	rpm	1000	1000	1000	1000	1000		1000
		continuous
		Max. speed	rpm	3000	3000	3000	3000	2400		2400
		Typical flow - Flow curves available in section 5
		1000 rpm at	l/min	0.7	2.0	3.0	5.5	7.6		10.2
		max. pressure
		1500 rpm at	l/min	1.7	3.6	5.0	8.6	12.6		16.5
		max. pressure
		1200 rpm at	gpm	0.3	0.7	1.0	1.8	2.5		3.3
		max. pressure
		1800 rpm at	gpm	0.6	1.2	1.6	2.7	4.0		5.3
		max. pressure
		Typical motor size
		1500 rpm at	kW	0.75	1.1	1.5	2.2	4.0		5.5
		max. pressure	50 Hz
		1800 rpm at	hp	1.0	1.5	2.0	3.0	7.5		7.5
		max. pressure	60 Hz
		Torque at max.	Nm	4.4	6.7	8.1	12.4	25.6		31.7
		outlet pressure
			lbf-ft	3.2	4.9	6.0	9.2	18.9		23.4
		Media	°C	2-50	2-50	2-50	2-50	2-50		2-50
		temperature
			°F	37-122	37-122	37-122	37-122	37-122		37-122
		Ambient	°C	0-50	0-50	0-50	0-50	0-50		0-50
		temperature
			°F	32-122	32-122	32-122	32-122	32-122		32-122
		Sound	dB(A)	76	76	76	76	75		75
		pressure level 2)
		Weight	kg	4.4	4.4	4.4	4.4	7.7		7.7
			lbs	9.7	9.7	9.7	9.7	17.0		17.0

1)1% per minute peak, 10% per minute during start up.

2)Measurements according to EN ISO 3744: 2010 / dB(A) [LPA, 1m] values are calculated. Measured at max pressure and rpm for a motor pump unit.

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Data sheet	PAHT 2-308 pumps

4.2 PAHT 20-32

	Pump size		20	25	32
	Code number PAHT		180B0019	180B0020	180B0021
	Housing material		AISI 316	AISI 316	AISI 316
			or higher	or higher	or higher
	Geometric	cm³/rev	20	25	32
	displacement
		in³/rev	1.22	1.53	1.95
	Pressure
	Min. outlet	barg	30	30	30
	pressure
		psig	435	435	435
	Max. outlet	barg	100	160	160
	pressure
		psig	1450	2321	2321
	Inlet pressure,	barg	0-6	0-6	0-6
	continuous 1)
		psig	0-87	0-87	0-87
	Max. inlet	barg	20	20	20
	pressure, peak 2)
		psig	290	290	290
	Speed
	Min. speed	rpm	700	700	700
	Min. speed,	rpm	1000	1000	1000
	continuous
	Max. speed	rpm	2400	2400	2400
	Typical flow - Flow curves available in section 5
	1000 rpm at	l/min	16.9	20.6	28.0
	max pressure
	1500 rpm at	l/min	27.0	33.2	44.2
	max pressure
	1200 rpm at	gpm	5.4	6.7	9.0
	max. pressure
	1800 rpm at	gpm	8.6	10.6	14.0
	max. pressure
	Typical motor size
	1500 rpm at	kW	5.5	11.0	15.0
	max. pressure	50Hz
	1800 rpm at	hp	7.5	20.0	20.0
	max. pressure	60Hz
	Torque at max.	Nm	21.0	69.2	89.0
	outlet pressure
		lbf-ft	15.5	51.1	65.7
	Media	°C	2-50	2-50	2-50
	temperature
		°F	37-122	37-122	37-122
	Ambient	°C	0-50	0-50	0-50
	temperature
		°F	32-122	32-122	32-122
	Sound	dB(A)	79	79	79
	pressure level 3)
	Weight	kg	19	19	19
		lbs	42	42	42

1)Above 1800 rpm inlet pressure 2-6 barg

2)1% per minute peak, 10% per minute during start up.

3)Measurements according to EN ISO 3744: 2010 / dB(A) [LPA, 1m] values are calculated. Measured at max pressure and rpm for a motor pump unit.

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Data sheet	PAHT 2-308 pumps

4.3 PAHT 50-90

	Pump size		50	63	70	80	90
	Code number PAHT		180B0085	180B0086	180B0087	180B0088	180B0089
	Housing material		AISI 316	AISI 316	AISI 316	AISI 316	AISI 316
			or higher	or higher	or higher	or higher	or higher
	Geometric	cm³/rev	50	63	70	80	90
	displacement
		in³/rev	3.05	3.84	4.27	4.88	5.49
	Pressure
	Min. outlet	barg	30	30	30	30	30
	pressure
		psig	435	435	435	435	435
	Max. outlet	barg	80	160	160	160	160
	pressure
		psig	1160	2321	2321	2321	2321
	Inlet pressure,	barg	0-6	0-6	0-6	0-6	0-6
	continuous
		psig	0-87	0-87	0-87	0-87	0-87
	Max. inlet 1)	barg	20	20	20	20	20
	pressure, peak
		psig	290	290	290	290	290
	Speed
	Min. speed	rpm	700	700	700	700	700
	Min. speed,	rpm	1000	1000	1000	1000	1000
	continuous
	Max. speed	rpm	1800	1800	1800	1800	1800
	Typical flow - Flow curves available in section 5
	1000 rpm at	l/min	43.7	50.5	57.7	68.3	77.6
	max. pressure
	1500 rpm at	l/min	68.7	82.1	92.9	108.5	122.6
	max. pressure
	1200 rpm at	gpm	14.0	16.4	18.7	21.9	24.9
	max. pressure
	1800 rpm at	gpm	21.8	26.3	29.6	34.5	38.9
	max. pressure
	Typical motor size
	1500 rpm at	kW	11	30	30	37	45
	max. pressure	50 Hz
	1800 rpm at	hp	20	50	50	60	75
	max. pressure	60 Hz
	Torque at max.	Nm	68.5	172.6	191.8	219.8	246.6
	outlet pressure
		lbf-ft	50.6	127.4	141.5	162.2	182.0
	Media	°C	2-50	2-50	2-50	2-50	2-50
	temperature
		°F	37-122	37-122	37-122	37-122	37-122
	Ambient	°C	0-50	0-50	0-50	0-50	0-50
	temperature
		°F	32-122	32-122	32-122	32-122	32-122
	Sound	dB(A)	80	80	80	80	81
	pressure level 2)
	Weight	kg	34	34	34	34	34
		lbs	75	75	75	75	75

1)1% per minute peak, 10% per minute during start up.

2)Measurements according to EN ISO 3744: 2010 / dB(A) [LPA, 1m] values are calculated. Measured at max pressure and rpm for a motor pump unit.

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Data sheet	PAHT 2-308 pumps

4.4 PAHT 256-308

	Pump size		256	308
	Code number PAHT		180B1001	180B1002
	Housing material		AISI 316	AISI 316
			or higher	or higher
	Geometric	cm³/rev	256	308
	displacement
		in³/rev	15.6	18.8
	Pressure
	Min. outlet	barg	30	30
	pressure
		psig	435	435
	Max. outlet	barg	120	120
	pressure
		psig	1740	1740
	Inlet pressure,	barg	2-6	2-6
	continuous
		psig	29-87	29-87
	Max inlet	barg	10	10
	pressure, peak 1)
		psig	145	145
	Speed
	Min. speed	rpm	450	450
	Min. speed,	rpm	700	700
	continuous
	Max. speed	rpm	1250	1250
	Typical flow - Flow curves available in section 5
	450 rpm at	l/min	89.6	107.8
	max. pressure
	1250 rpm at	l/min	294.4	354.2
	max. pressure
	450 rpm at	gpm	23.3	28.0
	max. pressure
	1250 rpm at	gpm	76.5	92.1
	max. pressure
	Typical motor size
	1000 rpm at	kW	55	75
	max. pressure	50 Hz
	1200 rpm at	hp	100	125
	max. pressure	60 Hz
	Torque at max.	Nm	549.6	661.3
	outlet pressure
		lbf-ft	405.6	448.0
	Media	°C	2-50	2-50
	temperature
		°F	37-122	37-122
	Ambient	°C	0-50	0-50
	temperature
		°F	32-122	32-122
	Sound	dB(A)	82	87
	pressure level 2)
	Weight	kg	105	105
		lbs	231	231

1)1% per minute peak, 10% per minute during start up.

2)Measurements according to EN ISO 3744: 2010 / dB(A) [LPA, 1m] values are calculated. Measured at max pressure and rpm for a motor pump unit.

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Data sheet	PAHT 2-308 pumps
5. Flow	The flow (Q eff) at various pressure (pmax) can be			At zero pressure the true flow equals the
	calculated with the following equation:			theoretical flow Q (th).
	Q eff = Q (th) – [(Q (th) – Q (p max)) x (p / p max)]
				Q (th):	Theoretical flow (l/min / gpm)
	The theoretical flow can be calculated with the			Q (pmax):	Flows at max. pressure (l/min and
	following equation:			p max:	gpm), see 4.1-4.4
		V x n			Max pressure (barg / psig)
				p:	Pressure (barg / psig)
	Q (th) =			V:	Displacement (cm3 / rev.)
	1000			n:	Motor speed (rpm)

5.1PAHT 2-6.3 typical flow curves at max pressure

l/min
20
18								PAHT 6.3
16
14
12								PAHT 4.0
10
8								PAHT 3.2
6
4								PAHT 2.0
2
0								rpm
1000	1250	1500	1750	2000	2250	2500	2750	3000
gpm
5.0

PAHT 6.3

4.5

4.0

3.5

3.0

PAHT 4.0

2.5

PAHT 3.2

2.0

1.5

PAHT 2.0

1.0

0.5

0															rpm
1000			1250		1500	1750		2000		2250	2500	2750		3000

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