F12K/F18K - Electrical, Manual and Hydraulic operation
28Pages

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. MFC PROPORTIONAL DIRECTIONAL CONTROL VALVE Electrical, Manual and Hydraulic operation Size 1/2" and 1" + combination Series F12K and Series F18K * 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 II 2 EEx m II T4 (even up to IP-57). Publ. F12/18K-03/06

2 TECHNICAL DATA F12K F18K Mounting position Optional Optional Size working ports 1/2" BSP 1" BSP (SAE optional) (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-way compensator (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) (see page 9) (see...

3 DESCRIPTION Influence of pump pressure to flow variation NOMINAL FLOW Flow qv % 0 50 100 150 200 250 300 350 bar (715) (1430) (2145) (2860) (3575) (4290) (5000) (psi) Pump pressure Fig. 1 With commercially available compensator 100 70 The AMCA Multi Flow Control - F..K - valve, enables the control of several loads simultaneously from only a single hydraulic pressure source. The MFC-valve was the first on the market to allow several loads to be controlled virtually independently due to the fact that each directional control section is fitted with a 2-way pressure compensator as standard....

4 OPERATION AMCA-MFC-F..K in combination with a fixed volume pump (Example 1 on page 6). This combination allows several loads to be connected in parallel for simultaneously and independent operation regardless of the load/pump pressure variations while the flow through the valve can be proportionally controlled between zero and a preset maximum limit. Inlet Plate The circuit diagram (example 1, page 6) shows a fixed volume pump connected to an inlet plate with a pressure compensator acting as a by-pass flow control valve and also as a circulating valve when the directional spools of the...

5 ELECTRICAL F...KE Solenoids a = solenoid a energized; port A to pump 0 = solenoid a and b de-energized b = solenoid b energized; port B to pump. MANUAL F...KH Lever positions a = port A to pump o = neutral position b = port B to pump HYDRAULIC F...KO Pilot pressure ports a = pilot pressure port X under pressure; port A to pump 0 = pilot pressure ports X and Y without pressure b = pilot pressure port Y under pressure; port B to pump. OPERATION a 0 b a 0 b a 0 b A B a P T b X Y P T A B P A T B 0 b A a B A B pilot pressure port Y pilot pressure port X A B solenoid a solenoid b

12 VARIANTS/OPTIONS SERIES F12K/F18K code R A B B code J A code E + F code A + B code H code J code E + F code A + B code H Variant D, E or F A B Variant W, X or Y Variant W, X or Y Variant D, E or F + FLOW LIMITATION SOLENOIDS PORT PRESSURE SETTING AND/OR PORT REMOTE CONTROL

13 VARIANTS/OPTIONS SERIES F12K/F18K A B A B A B Airbleed A B Airbleed Airbleed A B STROKE LIMITATION (STANDARD) ADDITIONAL MANUAL CONTROL F12K SHOCK SUCTION VALVES F12K SHOCK SUCTION VALVES F18K variant H variant M variant M variant Z variant Z ADDITIONAL MANUAL CONTROL F18K

14 APPLICATIONS SERIES F12K/F18K “HYDRALIFT” - PIPE HANDLING CRANE

16 APPLICATIONS SERIES F12K/F18K SKYWORKER CONCRETE PUMP

A2 B2 A3 B3 A4 B4 T1 F12KEWA1BH F12KERB1BHM F12KEWC1BH F12KPE4 A1 B1 A3 B3 A4 B4 F12KERA1BH T1 F12KPE4 F12KN F12KERB1BHM F12KEWC1BHZ A1 B1 A2 B2 F12KN F12KERA1BH M Ø F12KEWA1BHZ T2 P1 LS T2 LS P1 17 T1 F18KPH3 Y X A2 B2 Y X A3 B3 Y Va Vb Va F18KOWB1-HY F18KOWC1-FHY Vb T2 X A1 B1 LS Y T1 F18KU Va F18KPH2 P1 F18KORA1-FHZ R X A1 B1 Y X A2 B2 LS Vb Va Vb F18KR F18KOWB1-HY P1 F18KOWC1-FHY 1 A2 B2 T1 F12KHWC1FHZ F12KPH2 A1 B1 F12KHRA1FH T1 F12KN Z F12KPH4--Z A3 B3 A4 B4 F12KHWB1FH F12KHWC1FH T2 A1 B1 A2 B2 F12KHRA1FHZ LS P1 F12KU F12KHRA1FH P LS T2 APPLICATIONS SERIES F12K/F18K Parallel circuit...

e solenoid a solenoid b A B 37 (1.44) 73 (2.85) 37 (1.44) 73 (2.85) Solenoid Code H (EEx m II T4) Solenoid Code J (IP 67 Military) (Explosion proof) 65 (2.54) 89 (3.47) 79 (3.1) 35 (1.37) 35 (1.37) 5,2 (0.20) 75 (2.93) 35 (1.37) 72 (2.81) (manual emergency control by button) Solenoid Codes E + F a c d b 68 (2.65) 18 effective stroke idle stroke effective stroke 31 (1.21) l b c 29 (1.13) f 78 (3.04) n r adjustment port A F12K adjustment port B F18K adjustment port B F12K adjustment port A F18K â manual lever auxiliary â P A m A B solenoid a pressure setting on A+B stroke limitation solenoid...

20 MAINTENANCE DATA Mounting procedure / Installation - It is absolutely essential to ensure that the MFC and their pipelines are to be laid free of distortion and stress when being fitted. For connections, use only fittings with parallel thread, never tapered screw thread. - It is recommended to make additional use of the second T port in the presence of high return-flow rates (e.g. cylinder with area ratio 2:1) and for MFC valves with a large number of control valves. - It is recommended to connect a differential cylinder with the bottom side on the B-port, because the pressure drop from...