Direct Acting Proportional Directional Valve Without Position Feedback

Direct Acting Proportional Directional Valve Without Position Feedback

1. Direct control proportional reversing valve, without displacement electrical feedback, spool by the spring to the center; 2. Accurate stepless flow regulation (without pressure compensation) and direction control can be realized; 3. Proportional electromagnet with center thread, coil can be separately removed; 4. Used for bottom plate installation, installation surface according to the unified international standard ISO 4401; 5. Electric control device has external type and integrated type, which can be used interchangeably with similar products in Europe and America;

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Description

4WRA	E	6	- C2	-30	A	- 10	- D24	- K31	- A1	- V	- **
1	2	3	4	5	6	7	8	9	10	11	12

1- Direct action without displacement electrical feedback
2- electronic control blank: external type amplifier plate; E: Integrated amplifier plate
3- Nominal size 6:6 ; 10:10
4- Slide column function See slide column function table
5- nominal flow 6 diameter 07:7L/min; 15:15L/min; 30:30L/min;10 diameter 30:30L/min; 60:60L/min
6- Throttling groove form
7- Design code
8- Power supply voltage blank: none (for 4WRA); D24:DC24V(for 4WRAE)
9- Electrical connection 4WRA Blank: with coil plug (PG11); K4: None
4WRAE blank: with amplifier plug; K31: None
10- Control instruction blank: for 4WRA; A1: Instruction value ±10V(for 4WRAE); F1: Instruction 4 to 20mA(for 4WRAE)
11- Sealing material blank: nitrile rubber; V: Fluorine rubber
12- More details

Maximum pressure	315	bar
Maximum flow	75	L/min
Working medium	Mineral oil (HL, HLP) conforming to DIN51524 standard, please consult our company for other oil	/
Recommended viscosity range	20 to 380mm2/s (30 to 46mm2/s is preferred)	/
Oil contamination	The highest pollution level is according to NAS1638 level 9 or ISO4406 level 20/18/15	/

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