Moog 31 Cross Reference Electro-Hydraulic Flow Control Servo Valve

• Customization: Available
• Temperature: Ordinary Temperature
• Certification: ISO9001
• Model NO.: 31
• Media: Oil
• Standard: Standard
• Power: Hydraulic
• Transport Package: Paper Box
• Specification: Standard
• Trademark: WK
• Origin: China
• HS Code: 84818010
• Production Capacity: 50000PCS/Year

Product Description

 Performance indices
 

Item		Unit	Index
Supply pressure Ps		MPa	2~25
Rated supply pressure Pn		MPa	21
Rated flow Qn ()		L/min	20
Rated current In		mA	40
Hysteresis		%	≤4
Threshold		%	≤0.5
Nonlinearity		%	≤±5
Unsymmetry		%	≤±5
Pressure gain		%	>30
Internal leakage		L/min	≤2.0
Null bias		%	≤±1
Null shift with temperature (ΔT=56ºC)		%	≤±2
Null shift with supply pressure of  (80~110%) Pn		%	≤±2
Null shift with return pressure of  (0~20%) Pn		%	≤±2
Frequency response	Amplitude ratio with (-3dB)	Hz	≥100
	Phase lag with (-90°)	Hz	≥100
Working temperature		ºC	-15~100
Weight		kg	≈0.4

Electrical interface
 

Item	Unit	Single coil	Parallel coil	Series coil
Coil resistance	Ω	100	50	200
Rated current	mA	40	40	20
Coil inductance	H	1	0.5	2

Overall and installation dimensions
Overall dimensions

Installation dimensions

*Requirement: Flatness less than 0.01mm, roughness below .

0	P	A	B	T	G	F1	F2	F3	F4
	Ф5	Ф5	Ф5	Ф5	ф3	M4	M4	M4	M4
X	22	14	30	22	32	0	44	44	0
Y	9	17	17	25	29	0	0	34	34

Comparison between Servo Valve Model and Moog Model

                                    

WK    Model	MOOG   Model
SFL218        Series	MOOG 760/761 Series
SFL218A      Series	MOOG G631    Series
SFL218B      Series	MOOG062        Series (PLASSER)
SFL214,216  Series	MOOG 072      Series
SFL212A      Series	MOOG 30        Series
SFL212/B     Series	MOOG 31        Series
SFZ141         Series	MOOG D633    Series
SFZ142         Series	MOOG D634    Series
SFL317        Series	MOOG792        Series
SFL316        Series	MOOG791        Series
SFD234        Series	MOOG D661    Series

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