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Product Advantages

Technical Parameter

Industry Application

? Directioanl valve directioanl the oil path by controlling the main spool
? WEH electrohydraulic control
? Two-position four-way or three-position four-way
? Installation face follow DIN 24340 A, ISO 4401 and CETOP-RP 121H Sub-plate mounting connection
? Replace coil without releasing oil

NG10

Working pressureP,A,B		bar	315				280
Port T	With external pilot oil drain	bar	315				250
	With internal pilot oil drain	bar	210 AC 160
Port Y	With external pilot oil drain	bar	210
Min. control pressure	With external pilot oil supply With internal pilot oil supply (not apply to C, Z, F, G, H, P, T, V)	bar	3-position valve 10
			Spring-return 2-position valve 10
			Hydraulic-return 2-position valve 7
	With internal pilot oil supply ( apply to C, Z, F, G, H, P, T, V)	bar	4.5
Max. control pressure		bar	250
Fluid			Mineral oil,Phosphate ester
Fluid temperature range		℃	-30 to +80 ( NBR seals
			-20 to +80 ( FKM seals )
Viscosity range		mm²/s	2.8 to 500
Controlled quantity in commutating process		cm3	3-position valve 2.04 2-position valve 4.08
Switching times (= Valve switching time from the neutral position to the switched position)（DC ）
Control pressure		bar	70		140		210		250
3-position valve		ms	65		60		55		50
2-position valve		ms	80		75		70		65
Switching times (= Valve switching time from the switched position to the neutral position)
3-position valve		ms	30
2-position valve		ms	35	40	30	35	25	30	20	25
Flow of shortest switching time		L/min	about 35
Installation position		HC, HD, HK, HZ and HY of hydraulic return shall be installed horizontally. The rest are arbitrary
Weight		kg	about 9.5

NG16

Specifications		G-H-...WEH16../6B2... type				G-..WEH16../6B2.. type
Working pressureP,A,B bar		350				280
Port T	With external pilot oil drain bar	250				250
	With internal pilot oil drain bar	210
		Hydraulic-centering 3-position valve With internal pilot oil drain is impossible
Port Y	With external pilot oil drain bar	210
Min. control pressure	With external pilot oil supply bar With internal pilot oil supply bar	3-position valve 14
		Spring-return 2-position valve 14
		Hydraulic-return 2-position valve 14
	With internal pilot oil supply ( apply to C、Z、F、G、H、P、T、V) bar	When applying back pressure valve or the flow is large, enginery of spool valve is 4.5 bar as C、Z、F、G、H、P、T and V
Max. control pressure bar		250
Fluid		Mineral oil,Phosphate ester
Fluid temperature range ℃		-30 to +80 ( NBR seals
		-20 to +80 ( FKM seals )
Viscosity range mm2 /s 2		2.8 to 500
Switching pilot oil volume
-Spring-centering 3-position valve cm³		5.72
-2-position valve cm³		11.45
Hydraulic-centering 3-position valve
- From"0"position to working position"a" cm³		2.83
- From working position"a" to "0"position cm³		2.9
- From"a"position to working position"b" cm³		5.72
- From working position"b" to "0"position cm³		2.83
* Switching times (= Valve switching time from the neutral position to the switched position)(AC and DC)
Control pressure bar		50		150		250
- Spring-centering 3-position valve ms		65		60		58
- 2-position valve ms		65		55		50
- Spring-centering 3-position valve ms		a	b	a	b	a	b
		65	65	55	63	55	60
**Switching times (= Valve switching time from the neutral position to the switched position)
- Spring-centering 3-position valve ms		40
- 2-position valve ms		45		35		30
- Hydraulic-centering 3-position valve ms		a	b	a	b	a	b
		20	20	20	20	20	20
Installation position		C,D,K,Z,Y Type hydraulic-return valves are installed horizontally, the rest can be installed arbitrarily。
Flow of shorter switching time L/min		about 35
Weight of the valve kg		about 10.6

NG25

Specifications		G-H-...WEH25../6B2... type						G-..WEH25../6B2.. type
Working pressureP,A,B bar		350						280
Port T	With external pilot oil drain bar	250						250
	With internal pilot oil drain bar	210
		Hydraulic-centering 3-position valve With internal pilot oil drain is impossible
Port Y	With external pilot oil drain bar	210
Min. control pressure	With external pilot oil supply bar With internal pilot oil supply bar	Spring-centering 3-position valve 13
		Hydraulic-centering 3-position valve 18
		Spring-return 2-position valve 13
		Hydraulic-return 2-position valve 18
	With internal pilot oil supply	When applying back pressure valve or the flow is large, enginery of spool valve is 4.5 bar as C、Z、F、G、H、P、T and V
Max. control pressure bar		250
Fluid		Mineral oil,Phosphate ester
Fluid temperature range ℃		-30 to +80 ( NBR seals
		-20 to +80 ( FKM seals )
Viscosity range mm2 /s 2		2.8 to 500
Switching pilot oil volume
-Spring-centering 3-position valve cm³		14.2
-2-position valve cm³		28.4
Hydraulic-centering 3-position valve
- From"0"position to working position"a" cm³		7.15
- From working position"a" to "0"position cm³		7.0
- From"a"position to working position"b" cm³		14.15
- From working position"b" to "0"position cm³		5.73
* Switching times (= Valve switching time from the neutral position to the switched position)(AC and DC)
Control pressure bar		50		140		210		250
- Spring-centering 3-position valve ms		85		75		70		65
- 2-position valve ms		160		130		120		105
- Spring-centering 3-position valve ms		a	b	a	b	a	b	a	b
		55	65	55	65	50	60	50	60
**Switching times (= Valve switching time from the neutral position to the switched position)
- Spring-centering 3-position valve ms		40
- 2-position valve ms		125		100		90		80
- Hydraulic-centering 3-position valve ms		a	b	a	b	a	b	a	b
		30	35	30	35	30	35	30	35
Installation position		C,D,K,Z,Y Type hydraulic-return valves are installed horizontally, the rest can be installed arbitrarily。
Flow of shorter switching time L/min		about 35
Weight of the valve kg		about 19

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Mining Truck

Horizontal Directional Drilling

Truck Crane

Excavator

Concrete Pump

Aerial Work Platform

Forging Presses

CNC Bending Machines

Die Casting Machine

Injection Molding Machines

Metallurgy

Port Machinery

Offshore Equipment

Wind Power

Water Conservancy Industry

Wet Spraying Machine

Shield tunneling

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ICP: hu13042344

GWEH Series

4/3, 4/2 Explosion-proof Electro-hydraulic Directional Valve

? Specification: 10~25? Rated pressure: 280/350 bar? Rated flow: 160~1,100 L/min? Sub-plate mounting, electro hydraulic directioanl

Download： Sample download

Product Advantages

Technical Parameter

Industry Application

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? Specification: 10~25
? Rated pressure: 280/350 bar
? Rated flow: 160~1,100 L/min
? Sub-plate mounting, electro hydraulic directioanl