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Products - Control Valves- MOV
PROPORTIONAL DIRECTIONAL CONTROL VALVE
MOV - Hydraulic operation

Features

  • The load independent output flow is proportional to the input signal (control pressure).
  • The pump pressure always corresponds to the user pressure, +3,6,8 or 12 bar (43, 86, 114 or 172 psi) Dp compensator.
  • The built-in pump-unloading valve results in:
    - very low power turned into heat;
    - minimum loading of the prime mover.
  • User speed is precisely controlled under all load conditions.
  • Progressive regulating curve; no pressure peaks when switching; sensitive control even for alternating pressures.
  • Constant working speed of differential cylinders at the different regulating flow to the valve by grinding angle.
  • Constant recirculation pressure independent of the number of units.
  • Any limiting of flow for every user port.
  • Proportional directional control valves also available as:
    - Manual proportional series MHV
    - Electrical proportional series MEV. Any combination of these control options is possible.
  • The sandwich system allows a construction up to 8 control valves.
  • Electrical pressure cut off at port A, B or A and B, available on request.
Technical Data
Assembly system sandwich or subplate design
Operating pressure (P,A,B) ...350 bar (5000 psi)
Maximum return pressure (T):

30 bar (428 psi)

Dp compensator 3; 6; 8 or 12 bar (43; 86; 114 or 172 psi)
Pressure setting range 5...350 bar (72...5000 psi)
Flow range (see table 1) ...800 l/min (...211 USgpm) - with 32 cSt at 40 o C
Fluid Mineral oil according to DIN 51524/51525
Fluid temperature range -35...+80°C (-31°...+176°F)
Viscosity range 2,8...380 cSt, optimal 30 cSt
Contamination level max. according to NAS 1638 Class 9 or ISO 18/15
  3...8% (50...800 l/min (13...211 USgpm))
Mounting position optional
Control characteristics 3 - 12 bar (43 - 172 psi) or
6 - 22 bar (86 - 315 psi)
Size working ports:

MOV12 : 1/2" BSP (SAE optional)
MOV16 : 3/4" BSP (SAE optional)
MOV20 : 1" BSP (SAE optional)
MOV25 : 1 1/4" BSP (SAE optional)
MOV32 : 1 1/2" BSP (SAE optional)




Table 1
Max. flow in l/min. (USgpm) related to the Dp in bar (psi) over the compensator, per nominal bore
 
Size
Dp compensator
 
3(43)
6(86)
8(114)
12(172) *
bar (psi)
MOV12
50(13)
80(21)
90(24)
100(26)
l/min (USgpm)
MOV16
100(26)
140(37)
155(41)
180(47)
 
MOV20
160(42)
225(59)
250(66)
300(79)
 
MOV25
250(66)
350(92)
390(103)
500(132)
 
MOV32
400(106)
500(132)
550(145)
800(211)
 
* Due to loss of pressure
c.q. energy conversion into
heat, we recommend the
next largest size related
to a lower Dp compensator.
 


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