Directional spool valves รุ่น WHH

รายละเอียด Directional spool valves, pilot operated, with hydraulic-hydraulic actuation รุ่น WHH

• Size 10, 16, 25 (4W.H22), 25 (4W.H25), 32
• Component series 4X, 7X, 6X
• Maximum operating pressure 280 bar
• Maximum flow 1100 l/min

Features

• Type of actuation: pneumatic-hydraulic
• For subplate mounting
• Porting pattern according to ISO 4401 and NFPA T3.5.1 R2-2002
• Subplates according to data sheets 45054 to 45060 (separate order)
• Spring centering, spring end position or hydraulic end position
• Optional auxiliary operating device
• Switching time adjustment, optional
• Preload valve in channel P of the main valve, optional
• Stroke setting at main spool, optional
• Stroke setting and/or end position control, optional
• Inductive position switch and proximity sensors (contactless)

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Type code

01	02	03	04	05	06	07		08	09	10	11	12	13		14	15	16	17	18	19
		WHH					/		6					/						*

01	up to 280 bar	no code
02	3-way version	3
	4-way version	4
Types of actuation
03	hydraulic-hydraulic	WHH
Size
04	NG10	10
	NG16	16
	NG25 (type 4W.H 22 .7X/…)	22
	NG25 (type 4W.H 25 .6X/…)	25
	NG32	32
Spool return in the main valve
05	by means of springs	no code
	Hydraulic 3)	H
06	Spool symbols see symbols
Component series
07	40 to 49 – NG10 (40 to 49: unchanged installation and connection dimensions)	4X
	60 to 69 – NG25 (4W.H 25.) and NG32 (60 to 69: unchanged installation and connection dimensions)	6X
	70 to 79 – NG16 (from series 72) and NG25 (4W.H 22.) (70 to 79: unchanged installation and connection dimensions)	7X
Spool return in the pilot control valve with 2 spool positions only possible with spools B, C, D and hydraulic control spool return in the main valve:
08	With spring return	no code
	Without spring return	O
	Without spring return with detent	OF
Pilot control valve
09	with fluidic actuation (standard valve)	6
10	Without manual override	no code
11	External pilot oil supply, external pilot oil return 1)	no code
	Pilot oil supply internal, pilot oil return external 1; 2)	E
	Pilot oil supply internal, pilot oil return internal 2)	ET
	External pilot oil supply, internal pilot oil return 1)	T
12	Without switching time adjustment	no code
	Switching time adjustment as supply control	S
	Switching time adjustment as discharge control	S2
Spool position monitoring
13	Without position switch	no code
	Monitored spool position “a”	QMAG24
	Monitored spool position “b”	QMBG24
	Monitored spool position "a" and "b"	QMABG24
	monitored rest position	QM0G24
14	Stroke setting see stroke setting in type key table
Throttle insert
15	Without throttle insert	no code
	Throttle Ø 0,8 mm	B08
	Throttle Ø 1,0 mm	B10
	Throttle Ø 1.2 mm	B12
	Throttle Ø 1.5 mm	B15
	Throttle Ø 2.0 mm	B20
	Throttle Ø 2.5 mm	B25
preload valve (not for NG10) 4)
16	Without preload valve	no code
	With preload valve (pö = 4.5 bar)	P4,5
17	Without pressure reducing valve	no code
	With pressure reducing valve	D3 4)
Seal material
18	NBR seals	no code
	FKM seals (other seals upon request)	V
	Observe compatibility of seals with hydraulic fluid used.
19	Information in the plain text	*

1. External pilot oil supply X or return Y:
   • with NG10, version SO30 has to be used if sandwich plates are installed. The identification SO30 has to be used at the end of the type designation (sandwich plate).
   • the maximum admissible operating parameters of the pilot control valve must be observed!
   • observe the maximum pilot pressure!
2. Internal pilot oil supply (version “ET” and “E”):
   • minimum pilot pressure: please observe the Technical data!
   • to prevent inadmissibly high pressure peaks, a “B10” throttle insert must be provided in port P of the pilot control valve (see Pilot oil supply).
3. 2 spool positions (hydraulic end position): only piston C, D, Y, K ,Z
4. only in connection with throttle insert “B10”

pSt	Pilot pressure
ppilot min	Pilot pressure, minimum
ptank	Tank pressure
pö	Cracking pressure

Preferred types and standard units are contained in the EPS (standard price list).

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Model	Code
4WHH 10 HD30-4X/OF6ET/B10	R901185232
4WHH 10 HD42-4X/OF6ET/B06	R900951889
4WHH 10 HD42-4X/OF6ET/N06	R900963280
4WHH 16 HC7X/OF6E/B15P4,5	R900244062
4WHH 16 HC7X/OF6ET/B10D3	R901422786
4WHH 16 HD7X/6QMABG24	R901295994
4WHH 16 HD7X/6QMABG24 SO57-336	R976718678
4WHH 25 D6X/6ET/B10D3	R901300479
4WHH 25 HD6X/OF6/10	R901375655
4WHH 25 HD6X/OF6E/B10	R901253828
4WHH 32 Y6X/6ET	R901431148
4WHH16J7X/6/A	R978909798
4WHH22E7X/T SO8	R978903900

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