Danfoss PC12-LPS Technical Information

Logic Elements Technical Information

Pressure Compensator

PC12-LPS

OPERATION

The PC12-PS is a 12-size, load sense, priority, static, pressure compensator. The valve will provide on-demand priority flow to port 2 in the required amount (dependent on the load sense pressure on port 1), allowing the excess flow to go to auxiliary functions through port 4.

APPLICATION

Common applications include steering circuits that require pre-compensated, priority flow to go to the steering system, and the excess flow will go to an auxiliary function, like a fan motor. To obtain dynamic load sensing (priority type pre-comp) add in orifice between ports 2 and 1 in the manifold. This provides faster response and is commonly used in steering to flush out LS line. See Circuit Example.

SPECIFICATION		SCHEMATIC
Rated pressure	210 bar [3045 psi]	2 4
Rated flow at 7 bar	75 l/min
[100 psi]	[20 US gal/min]
Weight	0.31 kg [0.68 lb]
Cavity	CP12-4	1
		3

		Theoretical performance
PERFORMANCE CURVE					Pressure drop
	psi	bar		33 cSt[154 SUS] hyd.oil@38 C [100° F]
	261	18
	218	15
	174	12		3 to 4,
	131	9		2 Blocked
	87	6
	44	3			3 to 2
	0	0
		l/min 0		20	40	60	80	100
	USgal/min 0			5.3	10.7	15.8	21.1	26.4
BC332375783111en-000101 • February 2020									LE - 79

Logic Elements Technical Information

Pressure Compensator

PC12-LPS

DIMENSION	Cross-sectional view
mm [in]
	1-1/16 -12 UN	1.25 in.
		68-75 Nm [50-55 lbf-ft]

1

2	3	4
80.59		25.40
[3.17]		[1.00]

EXAMPLE CIRCUITS

ORDERING INFORMATION

PC12-LPS-5.5-B-00

Differential Control Pressure

5.5= 5.5 bar [80 psi]

7.0= 7 bar [100 psi]

10.0= 10.0 bar [150 psi]

Housing and ports	Housing Part #
00 = No Housing	No Housing
3B = Al, 1/2 BSP	CP12-4-3B
4B = Al, 3/4 BSP	CP12-4-4B
10S = Al, #10 SAE	CP12-4-10S
12S = Al, #12 SAE	CP12-4-12S

Seals	Seal Kit
B = Buna-N	120262
V = Viton	120263

BC332375783111en-000101 • February 2020

LE - 80