Danfoss PPR09-POD Technical Information

Proportional Valves Technical Information

PPR09-POD

OPERATION

Proportional Pressure Reducing / Relieving Valve, Pilot Operated, Normally Open to Drain. With no current to the coil, the “reduced pressure” (port 3) is connected to drain (port 4), while blocking the inlet (port 2). As current is increased to the coil, inlet (port 2) is connected to “reduced pressure” (port 3), proportionally increasing the “reduced pressure” as shown on the performance curve(s). If the“reduced pressure”exceeds the setting induced by the coil, pressure is relieved to drain (port 4). This 09 Series valve uses a 10 size cavity with an 08 size tube and coil, providing an optimal product for high flow and low pressure, while minimizing pressure drop in the system. This valve was formerly branded as XRP 044.

APPLICATION

Common applications include low-pressure proportional pilot control of clutches or hydraulically piloting large directional spool valves. Refer to example circuits. Use the optional screen to help protect the actuator from large particles. Select the robust coil for those extreme environmental conditions – voltage extremes, high temperature, shock & vibration, chemicals, and/or water ingression.

THEORETICAL PERFORMANCE

SPECIFICATIONS

Rated pressure	50 bar [725 psi]
Rated flow at 7 bar	25 l/min
[100 psi]	[7 US gal/min]
Weight	0.34 kg [0.75 lb]
Hysteresis	6% maximum
Threshold current	0.15 A (12 VDC coil)
	0.08 A (24 VDC coil)
Maximum control current	1.2 A (12 VDC coil)
DIMENSIONS	0.6 A (24 VDC coil)
Cavity	SDC10-4
Standard Coil	M13 20 Watt
Robust Coil	R13 16 Watt
	Robust Nut P/N 173800539
	No coil O-rings needed.

Shown with Standard Coil and Filter

Shown with Robust Coil and Filter

SCHEMATICS

BC332375973113en-000101 • February 2020

PV - 57

Proportional Valves Technical Information

PPR09-POD

DIMENSIONS

mm [in]

Cross-sectional view

EXAMPLE APPLICATION CIRCUITS

ORDERING INFORMATION

BC332375973113en-000101 • February 2020

PV - 58