Danfoss Shuttle Valves Technical Information

Shuttle Valves Technical Information

Quick Reference

Cartridge			Model No.	Cavity	Description	Flow*	Pressure	Page
			CP124-1	CP04-3	Load Shuttle Valves,	3.7 l/min	350 bar	SH - 4
					Normal direction	[1 US gal/min]	[5075 psi]
	2		CP128-1	SDC08-3		22 l/min	315 bar	SH - 5
						[5.8 US gal/min]	[4570 psi]
			SV04	NCS04/3		15 l/min	315 bar	SH - 6
1		3				[4 US gal/min]	[4570 psi]
			CP120-4	SDC10-3		25 l/min	330 bar	SH - 7
						[7 US gal/min]	[4800 psi]
			SV06	NCS06/3		48 l/min	350 bar	SH - 8
						[12.7 US gal/min]	[5075 psi]
In-line			Model No.	Cavity	Description	Flow*	Pressure	Page
	F		VS 06	none	Load shuttle Valve,	35 l/min	350 bar	SH - 9
					In-line	[9 US gal/min]	[5075 psi]
			VS 10	none		45 l/min	350 bar	SH - 10
A		B				[12 US gal/min]	[5075 psi]

Hot oil shuttle				Model No.	Cavity	Description	Flow*	Pressure	Page
spool overlap = C		spool overlap = O		CP720-3	SDC10-4	Hot Oil Shuttle	25 l/min	350 bar	SH - 11
2	4 2		4				[7 US gal/min]	[5075 psi]
				CP721-3	CP12-3M		90 l/min	350 bar	SH - 12
3		3					[24 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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Shuttle Valves Technical Information

Application Notes

OVERVIEW	There are two types of shuttle valves -- load shuttle valves and hot oil shuttle valves.
	Shuttle valves

LOAD SHUTTLE VALVE A load shuttle valve communicates the higher of two inlet pressures at 1 and 3 to the outlet at 2. A steel ball is used to seal the lower pressure. Load shuttles have several common applications including:

·Logic for load sensing circuits

·Bi-directional motor brake release valve

Load sensing circuit

Load shuttle valve

1

2 3

Bi-directional motor brake release valve

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<![endif]>Application Notes

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Shuttle Valves Technical Information

Application Notes

HOT OIL SHUTTLE VALVE Hot oil shuttles are spool-type valves						Closed-circuit hydrostatic loop
	that use internal piloting at 2 and 4 to
	direct oil from the lower of the two input
	pressures to the outlet at 3.
	A common application for a hot oil
	shuttle is diverting fluid from the
	low pressure side of a closed-circuit
	hydrostatic loop for cooling and/or
	filtering.
	Hot oil shuttle valve

2

3

4

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Shuttle Valves Technical Information

Load Shuttle Valve - Normal Direction

CP124-1

OPERATION	This valve senses the higher of the two
	input pressures at ports 1 and 3 and
	routes it to the output port 2.
SPECIFICATIONS	Theoretical performance
	psi	bar 154 SUS (33 cSt) hyd. oil @ 100° F (38° C)
	203	14
	174	12

145			10
116 drop			8
87	<![if ! IE]> <![endif]>Pressure		6
58			4
29			2
			0 L/min		1
			US gal/min		0.3

3	2
	1	2

2	3	4
Flow
0.5	0.8	1.1

Schematic

2

1

3

Specifications

Rated pressure*	350 bar [5075 psi]
Rated flow at 7 bar	3.7 l/min
[100 psi]	[1 US gal/min]
Leakage	6 drops/min @
	Rated pressure
Weight	0.02 kg [0.04 lb]
Cavity	CP04-3

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

DIMENSIONS

Cross-sectional view

mm [in]

7/16-20 UNF

	I 0.188 in
	t 10-15 N.m
1	[8-10 lbf.ft]
2	3
36.8	2.5
[1.45]	[0.10]

ORDERING

INFORMATION

CP124 - 1 - B - 4S

Seals
			Seal kit
B	= Buna-N		120111
V	= Viton		120282

Housing and ports			Housing P/N
0	= No Housing		No Housing
2B	=	AL, 1/4 BSP	CP04-3-2B
4S	=	AL, #4 SAE	CP04-3-4S

Other housings available

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