Danfoss Check Valves Technical Information

Check Valves Technical Information

Quick Reference

Cartridge		Model No.	Cavity	Description	Flow*	Pressure	Page
1	2	CV04-NB	CP04-2	Check Valve, Ball Type,	3 l/min	207 bar	CV - 6
in	out			Normal Direction	[0.8 US gal/min]	[3000 psi]

Cartridge		Model No.	Cavity	Description	Flow*	Pressure	Page
1	2	CV08-NP	SDC08-2	Check Valve, Poppet Type,	38 l/min	350 bar	CV - 7
in	out			Normal Direction	[10 US gal/min]	[5075 psi]
		CV10-NP	SDC10-2		80 l/min	350 bar	CV - 8
					[21.1 US gal/min]	[5075 psi]
		CP102-1	SDC16-2		210 l/min	315 bar	CV - 9
					[55.5 US gal/min]	[4570 psi]
		CP103-1	SDC20-2		330 l/min	215 bar	CV - 10
					[87.2 US gal/min]	[3120 psi]

Cartridge		Model No.	Cavity	Description	Flow*	Pressure	Page
1	2	CP104-2	CP04-2	Check Valve,	4.5 l/min	350 bar	CV - 11
				Reverse Direction,	[1.2 US gal/min]	[5075 psi]
out	in			No Spring

* Flow ratings are based on a pressure drop of 7 bar [100 psi] unless otherwise noted. They are for comparison purposes only.

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Check Valves Technical Information

Quick Reference

Cartridge		Model No.	Cavity	Description	Flow*	Pressure	Page
		CP108-2	SDC08-2	Check Valve,	20 l/min	350 bar	CV - 12
1	2			Reverse Direction	[5 US gal/min]	[5075 psi]
out	in	CP100-2	SDC10-2		50 l/min	350 bar	CV - 13
					[13 US gal/min]	[5075 psi]
		CP101-2	CP12-2		75 l/min	350 bar	CV - 14
					[20 US gal/min]	[5075 psi]
		CP102-2	SDC16-2		150 l/min	350 bar	CV - 15
					[40 US gal/min]	[5075 psi]
		CP103-2	SDC20-2		265 l/min	350 bar	CV - 16
					[70 US gal/min]	[5075 psi]
Slip-in		Model No.	Cavity	Description	Flow*	Pressure	Page
		3C50-01	FC-144	Check Valve,	70 l/min	210 bar	CV - 17
1	2			Slip-in	[19 US gal/min]	[3000 psi]
in	out	3C60-01	FC-144		70 l/min	140 bar	CV - 18
					[19 US gal/min]	[2000 psi]
		3C80-01	FC-304		190 l/min	140 bar	CV - 19
					[50 US gal/min]	[2000 psi]
		3C90-01	FC-304		190 l/min	210 bar	CV - 20
					[50 US gal/min]	[3045 psi]

In-line		Model No.	Cavity	Description	Flow*	Pressure	Page
		3C11-01	none	Check Valve,	20 l/min	350 bar	CV - 21
				In-line,	[5 US gal/min]	[5075 psi]
		RS 06	none	Female Port	30 l/min	350 bar	CV - 22
1	2				[8 US gal/min]	[5075 psi]
in	out	3C12-01	none		35 l/min	350 bar	CV - 23
					[9 US gal/min]	[5075 psi]
		RS 10	none		60 l/min	350 bar	CV - 24
					[16 US gal/min]	[5075 psi]
		3C13-01	none		70 l/min	350 bar	CV - 25
					[19 US gal/min]	[5075 psi]
		3C14-01	none		95 l/min	350 bar	CV - 26
					[25 US gal/min]	[5075 psi]
		RS 13	none		100 l/min	315 bar	CV - 27
					[26 US gal/min]	[4500 psi]
		RS 19	none		140 l/min	280 bar	CV - 28
					[37 US gal/min]	[4000 psi]
		3C15-01	none		150 l/min	350 bar	CV - 29
					[40 US gal/min]	[5075 psi]
		RS 25	none		200 l/min	245 bar	CV - 30
					[53 US gal/min]	[3500 psi]
		3C16-01	none		230 l/min	350 bar	CV - 31
					[61 US gal/min]	[5075 psi]

* Flow ratings are based on a pressure drop of 7 bar [100 psi] unless otherwise noted. They are for comparison purposes only.

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<![endif]>Quick Reference

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Check Valves Technical Information

Quick Reference

In-line		Model No.	Cavity	Description	Flow*	Pressure	Page
		3CM11-01	none	Check Valve,	20 l/min	350 bar	CV - 32
1	2			In-line,	[5 US gal/min]	[5075 psi]
in	out	3CM12-01	none	Male Port	35 l/min	350 bar	CV - 33
					[9 US gal/min]	[5075 psi]
		3CM15-01	none		150 l/min	350 bar	CV - 34
					[40 US gal/min]	[5075 psi]

In-line		Model No.	Cavity	Description	Flow*	Pressure	Page
1	2	2RN11-01	none	Check Valve, In-line,	20 l/min	350 bar	CV - 35
				Female Port, with Orifice	[5 US gal/min]	[5075 psi]

* Flow ratings are based on a pressure drop of 7 bar [100 psi] unless otherwise noted. They are for comparison purposes only.

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Check Valves Technical Information

Application Notes

BASIC OPERATION	Check valves allow free flow in one direction and block flow in the opposite direction.
	Check valves

<![if ! IE]>

<![endif]>Application Notes

STANDARD CHECK	Standard check valves, suitable for most
VALVES	applications, have fully guided poppets
	which always block flow from 2 to 1.
	They are spring biased closed until
	sufficient pressure is applied at 1 to open
	flow to 2. This pressure is commonly
	called the crack pressure. Several
	crack pressures are available for each
	model. Consult check valves section for
	details. This valve is also available with
	an integral orifice for free flow in one
	direction and controlled flow (speed) in
	the opposite direction.

Standard check valve

1

2

REVERSE FLOW CHECK	Reverse flow check valves, useful for	Reverse flow check valve
VALVES	higher pressure applications or where
	housing or size constraints require this
	flow path are also available. These valves
	have guided poppets that block flow	1
	from 1 to 2 and are spring biased closed
	until sufficient pressure is applied at 2 to
	open flow to 1.	2

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Check Valves Technical Information

Application Notes

SLIP-IN CHECK VALVES	Slip-in style check valves are cartridges	Slip-in check valve
	that drop into small cavities and are
	retained by SAE plugs or by other
	cartridge valves. They are ideal for use in
	manifolds where space savings is critical.
	Versions of these valves with Delrin®
	seats are also available for applications
	requiring extremely low leakage.
INLINE CHECK VALVES	Also available are in-line check valves,	Inline check valve
	which can be used to simplify machine
	plumbing.
APPLICATIONS	Check valves have many common

applications including:

·Low pressure relief valve

·Bypass for filter elements

·Logic for load-sensing circuits

·Anti-cavitation or make-up

·Load holding (refer to Motion Control Valves for more information)

Low pressure relief valve

Bypass for filter elements

Logic for load-sensing circuits

Anti-cavitation

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Check Valves Technical Information

Ball Type, Normal Direction

CV04-NB

OPERATION	This valve allows free flow from 1 to 2 and blocks flow from 2 to 1.
SPECIFICATIONS	Theoretical performance	Schematic

psi 116

102

87

73

58

44

29

15

		bar	154 SUS (33 cSt) hyd. oil @ 100° F (38° C)
		8
		7
		6
<![if ! IE]> <![endif]>drop		5
<![if ! IE]> <![endif]>Pressure		4
		3
		2
		1
		0

L/min		1	2	3	4
			Flow
US gal/min		0.3
			0.5	0.8	1.1

1	2
in	out
Specifications
Rated pressure	207 bar [3000 psi]
Rated flow at 7 bar	3 l/min
100 psi	[0.8 US gal/min]
Leakage	6 drops/min @ Rated
	pressure
Weight	0.01 kg [0.022 lb]
Cavity	CP04-2

DIMENSIONS

Cross-sectional view

mm in

I 0.188 in 7/16-20 UNF t 10-15 N.m

[8-10 lbf.ft]

1

2

25.1				2.5
[0.99]		[0.10]

ORDERING INFORMATION

CV04-NB-0.3-B-00

Crack Pressure

0.3= 0.3 bar [5 psi]

1.7= 1.7 bar [25 psi]

Housing and ports	Housing Part #
00 = NoHousing	No Housing
4S = Al, #4 SAE	CP04-2-4S
2B = Al, 1/4 BSP	CP04-2-2B

Seals	Seal Kit
B = Buna-N	120077
V = Viton	11019554

<![if ! IE]>

<![endif]>CV04-NB

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Check Valves Technical Information

Poppet Type, Normal Direction

CV08-NP

OPERATION	This valve allows free flow from 1 to 2 and blocks flow from 2 to 1.
SPECIFICATIONS	Theoretical performance			Schematic
			Pressure drop	1	2
	psi bar		26 cSt [121 SUS] hyd.oil at 50ƱC [122 ƱF]
				in	out
	150
		10

8	1-2

100

	6
50	4
	2
0	0	15	30	45	l/min
	0	4	8	12	US gal/min

DIMENSIONS Cross-sectional view mm in

Specifications

Rated pressure*	350 bar [5075 psi]
Rated flow at 7 bar	38 l/min
[100 psi]	[10 US gal/min]
Leakage	6 drops/min @ Rated
	pressure
Weight	0.05 kg [0.11 lb]
Cavity	SDC08-2

*Rated pressure based on NFPA fatigue test standard (at 1 million cycles)

22 mm [0.866 in]				3/4-16 UNF
27-34 Nm [20-25 lbf*ft]
	1	<![if ! IE]> <![endif]>Ø 12.7	<![if ! IE]> <![endif]>[Ø 0.50]	<![if ! IE]> <![endif]>Ø 22.0 [Ø 0.87]
	2
9.0	27.0
[0.35]	[1.06]

ORDERING INFORMATION

CV08-NP-0.3-B-00

Check Valve

Poppet Type, Normal Direction

Crack Pressure

0.3 0.3 bar [5 psi]

1 1.0 bar [15 psi]

2 2.0 bar [30 psi]

5 5.0 bar [73 psi]

7 7.0 bar [100 psi]

Code	Ports & Material	Body Nomenclature
00	00 = Cartridge only	No Body
DG2B	Al, 1/4 BSP	SDC08-2-DG-2B
DG3B	Al, 3/8 BSP	SDC08-2-DG-3B
4S	Al, #4 SAE	CP08-2-4S
6S	Al, #6 SAE	CP08-2-6S

**Aluminum bodies are to be used for pressures less than 210 bar (3000 psi)

***Other housings available

Seal Option Seal Kit

B = Buna-N	120221
V = Viton	120222

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Check Valves Technical Information

Poppet Type, Normal Direction

CV10-NP

OPERATION

SPECIFICATIONS

DIMENSIONS mm in

25.4 mm [1 in]

41-47 Nm [30-35 lbf*ft]

This valve allows free flow from 1 to 2 and blocks flow from 2 to 1.

Theoretical performance

Pressure drop

psi	bar	26 cSt [121 SUS] hyd.oil at 50ƱC [122 ƱF]
150	10
	8
100						1-2
	6
50	4
	2
0	0	15	30	45	60	75	90	l/min
	0	4	8	12	16	20	24	US gal/min

Cross-sectional view

1	<![if ! IE]> <![endif]>Ø15.9	<![if ! IE]> <![endif]>[Ø0.62]

Schematic

1	2
in	out
Specifications
Rated pressure*	350 bar [5075 psi]
Rated flow at 7 bar	80 l/min
[100 psi]	[21.1 US gal/min]
Leakage	6 drops/min @ Rated
	pressure
Weight	0.08 kg [0.18 lb]
Cavity	SDC10-2

*Rated pressure based on NFPA fatigue test standard (at 1 million cycles)

7/8-14 UNF

<![if ! IE]>

<![endif]>Ø28.0 [Ø1.10]

ORDERING INFORMATION

2

8.532.1

[0.33] [1.26]

CV10-NP-0.3-B-00

Check Valve

Poppet Type, Normal Direction

Crack Pressure

0.3 0.3 bar [5 psi]

1 1.0 bar [15 psi]

2 2.0 bar [30 psi]

5 5.0 bar [73 psi]

7 7.0 bar [100 psi]

10 10 bar [150 psi]

15 15 bar [217 psi]

			Code	Ports & Material	Body Nomenclature
			00	00 = Cartridge only	No Body
			6S	Aluminum, #6 SAE	SDC10-2-6S
			8S	Aluminum, #8 SAE	SDC10-2-8S
			3B	Aluminum, 3/8 BSP	SDC10-2-3B
			4B	Aluminum, 1/2 BSP	SDC10-2-4B

**Aluminum bodies are to be used for pressures less than 210 bar (3000 psi)

***Other housings available

	Seal Option	Seal Kit
	B = Buna-N	120015
	V = Viton	120016

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CV - 8

Check Valves Technical Information

Poppet Type, Normal Direction

CP102-1

OPERATION	This valve allows free flow from 1 to 2 and blocks flow from 2 to 1.
SPECIFICATIONS	Theoretical performance	Schematic

Pressure drop

26 cSt [121 SUS] hyd.oil at 50ƱC [122 ƱF]

psi bar 150 10

8

100	6	1-2

504

2

0	0	40	80	120	160	200	240	l/min
	0	10	20	30	40	50	60	gal/min

DIMENSIONS Cross-sectional view mm in

1	2
in	out
Specifications
Rated pressure*	315 bar [4570 psi]
Rated flow at 7 bar	210 l/min
[100 psi]	[55.5 US gal/min]
Leakage	6 drops/min @ Rated
	pressure
Weight	0.26 kg [0.57 lb]
Cavity	SDC16-2

*Rated pressure based on NFPA fatigue test standard (at 1 million cycles)

38.1 mm [1.5 in]	1-5/16-12 UN
122-136 Nm [90-100 lbf*ft]

ORDERING INFORMATION

1	<![if ! IE]> <![endif]>Ø 28.6	<![if ! IE]> <![endif]>[Ø 1.13]	<![if ! IE]> <![endif]>Ø 38.1 [Ø 1.50]
2				5.0
				[0.20]
			12.5	44.7
			[0.49]	[1.76]

CP102-1-B-0-005

Check Valve

Poppet Type, Normal Direction

Crack

Pressure

005

0.34 bar [5 psi]

015

1.0 bar [15 psi]

Seal Kit

Seal Option

030

2.1 bar [30.4 psi]

120019

B = Buna-N

040

2.8 bar [40 psi]

120020

V = Viton

065

4.5 bar [65 psi]

Code

Ports & Material

Body Nomenclature

100

6.9 bar [100 psi]

0

0 = Cartridge only

No Body

DG6B

Al, 3/4 BSP

SDC16-2-DG-6B

DG8B

Al, 1 BSP

SDC16-2-DG-8B

12S

Al, #12 SAE

CP16-2-12S

16S

Al, #16 SAE

CP16-2-16S

**Aluminum bodies are to be used for pressures less than 210 bar (3000 psi)

*** Other housings available

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CV - 9

<![if ! IE]>

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Check Valves Technical Information

Poppet Type, Normal Direction

CP103-1

OPERATION	This valve allows free flow from 1 to 2 and blocks flow from 2 to 1.
SPECIFICATIONS	Theoretical performance		Schematic
		Pressure drop	1	2
	psi bar 26 cSt [121 SUS] hyd.oil at 50ƱC [122 ƱF]		in	out
	150	10

	100	8						1-2
		6
	50	4
		2
	0	0	50	100	150	200	250	300	350	400 l/min
			0	20	40	60		80	100 gal/min
DIMENSIONS	Cross-sectional view

mm in

Specifications

Rated pressure*	215 bar [3120 psi]
Rated flow at 7 bar	330 l/min
[100 psi]	[87.2 US gal/min]
Leakage	6 drops/min @ Rated
	pressure
Weight	0.54 kg [1.20 lb]
Cavity	SDC20-2

*Rated pressure based on NFPA fatigue test standard (at 1 million cycles)

47.6 mm [1.875 in]

217-231 Nm [160-170 lbf*ft]

1-5/8-12 UN

1	<![if ! IE]> <![endif]>Ø 36.5	<![if ! IE]> <![endif]>[Ø 1.44]	<![if ! IE]> <![endif]>Ø 47.6 [Ø 1.87]

2

3.0

[0.12]

16.055.8

[0.63] [2.20]

ORDERING		CP103-1-B-0-005
INFORMATION	Check Valve
					Crack Pressure
	Poppet Type, Normal Direction
					005	0.34 bar [5 psi]
	Seal Kit	Seal Option			015	1.0 bar [15 psi]
					030	2.1 bar [30 psi]
	120011	B = Buna-N
					065	4.5 bar [65 psi]
	120012	V = Viton
					100	7 bar [100 psi]
				Code	Ports & Material		Body Nomenclature
		0			0 = Cartridge only		No Body
				8B	Al, 1 BSP		CP20-2-8B
				10B	Al, 1-1/4 BSP		CP20-2-10B
				16S	Al, #16 SAE		CP20-2-16S
				20S	Al, #20 SAE		CP20-2-20S
				**Other housings available

<![if ! IE]>

<![endif]>CP103-1

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Check Valves Technical Information

Reverse Direction

CP104-2

OPERATION	This valve allows free flow from 2 to 1 and blocks flow from 1 to 2.
SPECIFICATIONS	Theoretical performance	Schematic

	Pressure drop
psi	bar 26 cSt [121 SUS] hyd.oil at 50ƱC [122 ƱF]
150	10

1	2
out	in

		8					2-1
	100
		6
	50	4
		2
	0	0	1	2	3	4	5	6	l/min
			0	0.5		1	1.5		gal/min
DIMENSIONS	Cross-sectional view

mm in

4.76 mm [0.188 in]

10-15 Nm [8-10 lbf*ft]

<![if ! IE]>

<![endif]>Ø 7.9 [Ø 0.31]

1

	2
2.5	30.5
[0.10]	[1.20]

Specifications

Rated pressure*	350 bar [5075 psi]
Rated flow at 7 bar	4.5 l/min
[100 psi]	[1.2 US gal/min]
Leakage	6 drops/min @ Rated
	pressure
Weight	0.01 kg [0.022 lb]
Cavity	CP04-2

*Rated pressure based on NFPA fatigue test standard (at 1 million cycles)

7/16-20 UNF

<![if ! IE]>

<![endif]>Ø 14.2 [Ø 0.56]

ORDERING INFORMATION

CP104-2-B-0

Check Valve

Ball Type, Reverse Direction

Seal	Option	Seal kit
B = Buna-N		120077
V = Viton		11019554

Code	Ports & Material	Body Nomenclature
0	0 = Cartridge only	No Body
2B	Al, 1/4 BSP	CP04-3-2B
4S	Al, #4 SAE	CP04-2-4S

**Aluminum bodies are to be used for pressures less than 210 bar (3000 psi)

*** Other housings available

BC332375208102en-000101 • February 2020

CV - 11