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Products - Control Valves- F12K/F18K
 Proportional, electrical, manual, hydraulic control and combinations
MFC - Multi Flow Control

Features
  • Different flowcombinations with combiplate.
  • Adaptable to all pump systems.
  • Several functions can be very precisely controlled independent of pressure drops.
  • The load independent output flow is proportional to the input signal.
  • Max. operating pressure 350 bar (5000 psi).
  • Operating pressures can be set individually at ports A & B (option).
  • Different main spool types.
  • Main spools with different nominal flows.
  • Flow can be tailored to suit requirements still using the full spool stroke by selecting different spool sizes, by adjusting (100 to 50%) or stroke limitation. Separate settings on ports A & B are possible.
  • Tests for the determination of pressure differential flow characteristics conforms to ISO 4411.
  • Tests for determining steady-state and dynamic performance conform with the appropriate methods described in ISO 6403.
  • Identification of valve ports conforms to ISO 9461:1992.
  • Identificationplates according to EN 982:1994 (ISO 4413).
  • Graphic symbols are in accordance with ISO 1219- 1:1991.
  • Excellent control resolution.
  • Control sections are available as: - Electrical proportional series F..KE - Manual proportional series F..KH and - Hydraulic proportional series F..KO Any combination of these control options is possible.
  • Energy saving achieved by load-sensing options with a fixed or variable volume pump.
  • Control solenoids available in explosion-proof design EEx m II T4 (even up to IP-57).
Technical Data
  F12K F18K
Mounting position Optional Optional
Size working ports
1/2" BSP (SAE optional) 1" BSP
(SAE optional)
Operating pressure (P,A,B) ...350 bar (5000 psi) ...350 bar (5000 psi)
Max. pressure (T) 35 bar (500 psi) 35 bar (500 psi)
Pressure setting range 13...350 bar (186...5000 psi) 13...350 bar (186...5000 psi)
Pressure drop over 2-waycompensator (A,B) 7 bar (100 psi) 7 bar (100 psi)
Internal pilot pressure setting approx.25 bar (358 psi) approx.25 bar (358 psi)
Lever force 35N (7.8 lbs) 35N (7.8 lbs)
Max. flow 75l/min (20 USgpm) 200l/min (53 USgpm)
Flow setting 50% of all nominal flows (option)
(depending on valve design) 		50% of all nominal flows (option)
(depending on valve design)
Internal leakage A/B-T 20 cm 3 /min (.005 USgpm) @ 150 bar (2145 psi)& 32 cSt
55 cm 3 /min (.015 USgpm) @ 150 bar (2145 psi) & 32 cSt
Pilot pressure 6-20 bar (86-286 psi) 6-20 bar (86-286 psi)
Spool stroke 5.25 mm (.207 inch) 7 mm (.275 inch)
Spool overlap 24% of the stroke 21.5% of the stroke
Lever stroke 28° 32°
Fluid Mineral oil according to
DIN 51524/51525
Mineral oil according to
DIN 51524/51525
Fluid temperature range -30...+80°C (-22°...+176°F) -30...+80°C (-22°...+176°F)
Viscosity range 10...500 cSt, optimal 30 cSt 10...500 cSt, optimal 30 cSt
Contamination level max. according to NAS 1638 Class 8 or ISO 17/14
according to NAS 1638 Class 8 or ISO 17/14
Nominal voltage 12 V DC, 24 V DC 12 V DC, 24 V DC
Nominal current 12 V DC = 1.200 mA 12 V DC = 1.200 mA
Reaction time from neutral -to max. - spoolposition
170 msec. 400 msec (possible 270 msec)
Hysteresis 3% 4%
Continuous operating 100% 100%
Type of protection IP 65, optional IP67/EEx m II T4 IP 65, optional IP67/EEx m II T4
Recommended dither frequency 100Hz 100Hz
If the performance characteristics outlined above do not meet your own particular requirements, please consult AMCA.



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