FULL RANGE PRESSURE COMPENSATING VARIABLE FLOW CONTROL

Transcription

1 B Certificate FULL RANGE PRESSURE COMPENSATING VARIABLE FLOW CONTROL FC1 FC ISO 91:2 WIT DESIGN #2.2.1 FC1-3/ INLET (IN) FC FCB1-3/ INLET (IN) FCR1-3/ FCR1 INLET (IN) FEATURES: DIAMOND ONED SPOOL BORE provides consistent spool fit with low leakage. EVERY FC IS TESTED for shutoff, max. flow, and pressure compensation. STANDARD 3-PORT allows for pressure compensated flow out of two ports. STANDARD 16 STAINLESS STEEL side lever spool to prevent the spool from locking up. STANDARD SAE ORB COMPENSATOR PLUGS to eliminate external leakage from the compensator bore. EXTERNAL SEALS ON ROTARY SPOOL prevents contamination from locking up spool. OPTIONAL TOP PORT allows the customer to plumb their pipe directly in line with the inlet. OPTIONAL 2-PORT allows for pressure compensated flow out of one port. OPTIONAL 316 STAINLESS STEEL rotary spool provides highest corrosion resistance. OPTIONAL FREE REVERSE FLOW allows fluid to move from the CF (control flow) and EX (excess flow) port to the inlet. (Single reverse flow is also available) OPTIONAL ADJUSTABLE BALL SPRING RELIEF AND IG LIFT BALL SPRING RELIEF CF (control flow) port. SPECIFICATIONS: See flow chart for capacity. Rated for 3 psi (27 bar). Weighs 7- ¾ lbs. (3.2 kg). 3-Micron Filtration Recommended. MATERIALS: Cast Iron Body. eat Treated Compensator Spool. Stainless Steel Rotary Spool. Buna N O Rings (Standard) eat Treated Free Reverse Check Seat. 1- Page B-1

2 FC GENERAL INFORMATION The Brand, full range pressure compensating variable flow control is designed so that the orifice area varies as the lever is rotated. Fluid travels past the variable orifice, through the compensator spool and then out the controlled flow port. Therefore the flow out of the CF port is proportional to the orifice area which can vary from closed to open. The sum of the controlled flow and the excess flow equals the inlet flow and as the controlled flow increases the excess flow decreases. Both outlet flows are pressure compensated with a spool that maintains a constant flow by adjusting for pressure. unting between the compensated pump and our valve is dampened with a dashpot on the compensator spool. Thus, the outlet flow is smooth and constant regardless of the pressure on the CF and EX port. External seals on the rotary spool prevent contamination from getting between the spool and the casting, thus preventing the spool from locking in one position. All FC s are built with stainless steel (16) rotary spools to help prevent the rotary spools from locking up when they are in a corrosive environment. We also offer the FC with outlet ports coming from the top of the casting. ADJUSTABLE BALL SPRING RELIEFS The adjustable ball spring relief (R) and the adjustable high lift ball spring relief (B) allow the customer pressure compensated flow up to the pressure setting on the relief. Once the pressure on the CF port increases above the relief setting the relief valve opens and diverts flow to the EX port while maintaining the pressure on the CF port. The EX port must be plumbed back to tank for both of these reliefs. Both relief options are preset to 1 psi (standard) and field adjustable from 7 to 3 psi. Pressure settings between 2 and 7 psi can be achieved by using a different spring. The B option s advantage over the R option is that the cracking pressure at low and high flow is virtually the same. The B option is also more stable when flow is traveling past the ball and spring. (See relief flow charts on next page) FREE REVERSE FLOW The free reverse flow () option is designed primarily where cylinders and motors are needed to go in reverse. Flow can go in reverse from either the EX or the CF port to the inlet. Flow is not metered when it goes in reverse. The non-metered flow travels past the poppet, down the center of the valve, past the compensator spool and through the inlet. The steel poppet seat inside the free reverse flow check is heat treated to assure a long life. FC EXAMPLES OF COMMON MODEL CODES: FC1-3/. 3/ ports and a max flow of 3 gpm. FCR1-3/.. Ball spring relief (1 psi setting), adjustable from 7 to 3 psi, 3/ ports, and a max flow of gpm. FC-1/2.... Free reverse flow, 1/2 ports, and a max flow of 16gpm. FC CREATING A MODEL CODE FOR FC S: F C - RELIEF: Omit No relief R Adjustable ball spring relief (Standard 1 psi setting) B Adjustable high lift ball spring relief (Standard 1 psi setting) FLOW PAT: 1 Standard flow control Free reverse flow (Cannot be used in conjunction with ball spring relief). FLOW SETTING & SPOOL TYPE: SS Stainless Steel (16 S.S. is standard) *37 - gpm (-3.3 lpm) * -16 gpm (-6.6 lpm) *7-3 gpm ( lpm) ** - Consult factory for others ** - Need not specify for standard flow settings noted under PORT SIZE PORT SIZE: 3/ 3/ NPT (- gpm standard) 1/2 1/2 NPT (-16 gpm standard) 3/ 3/ NPT (-3 gpm standard) 6 - #6SAE (9/16 1) (- gpm standard) - #SAE (3/ 16) (- gpm standard) 1 - #1SAE (7/ 1) (-16 gpm standard) 12 - #12SAE (1-1/16 12) (-3 gpm standard) 2 OR 3 PORT: 2P 2 port Omit 3 port (Standard) TP Top ported Page B-2

3 FC FLOW & PRESSURE INFO: Controlled Flow vs. Dial Plate for FC Series Pressure Drop vs. Flow for FC Series 32 2 FC1-3/ 2 Excess Flow FC1-1/2 FC1-3/ Pressure Drop (psi) 1 1 Controlled Flow Dial Plate Number (-1) Pressure vs. Flow for FCR1 Pressure vs. Flow for FCB1 2 3 TS32 Spring Pressure (psi) RL9A Spring Pressure (psi) TS323 Spring CF relief is set at 6 gpm CF relief is set at 6 gpm Page B-3

4 , NE N E DIMENSIONAL DATA: FCB1 AND FC1 DIMENSIONAL DATA (FCB1 SOWN): 3.7" 2.2 REF 29/32 11/32 REF.2" CF RAND YD. EX 7.1" 2.13". D 2 3 YD =OMA A BRAND YDRAULICS S.N. 6 7 Ø17/6 TRU (2 PLACES) 1.7".7" IN FCR1 AND FC1 DIMENSIONAL DATA (FCR1 SOWN): 3.7" 2.2" 1.7".1" 2." 29/32 REF. 11/32 REF.2" CF RAND YD. EX 2.13". D 2 3 YD = OMA BRAND YDRAULICS S.N. 6 7 Ø17/6 TRU (2 PLACES) 1.7".7".7" A, IN.6" Page B-

5 B Certificate ISO 91:2 WIT DESIGN #2.2.1 IG VOLUME FULL RANGE PRESSURE COMPENSATING VARIABLE FLOW CONTROL FC FC1 INLET (IN) FEATURES: PRECISION GROUND PLATED SPOOL that assures long life. DIAMOND ONED SPOOL BORE provides consistent spool fit with low leakage. EVERY FC IS TESTED for shutoff, linearity, and pressure compensation. STANDARD 3-PORT allows for pressure compensated flow out of two ports. SPECIFICATIONS: See flow chart for capacity. Rated for 3 psi (27 bar). Weighs 2 3/ lbs. (13. kg). 3-Micron Filtration Recommended. Torque to turn side lever spool. - in*lbs with 3 psi on CF port. - ft*lbs with 3 psi on EX port. MATERIALS: Ductile Cast Iron Body. eat Treated Steel Spools. Buna N O Rings. Consult factory for stainless steel rotary spool. FC GENERAL INFORMATION The Brand, full range pressure compensating variable flow control is designed so that the orifice area varies as the lever is rotated. Fluid travels past the variable orifice, by the compensator spool and then out the controlled flow port. Therefore the flow out of the CF port is proportional to the orifice area which can vary from closed to wide open. The sum of the controlled flow and the excess flow equals the inlet flow and as the controlled flow increases the excess flow decreases. Both outlet flows are pressure compensated with a spool that maintains a constant flow while adjusting for pressure. unting between the compensated pump and our valve is dampened with a cross hole in the casting. Thus, the outlet flow is smooth and constant regardless of the pressure on the CF and EX port. 1- Page B-

6 NE 9 1 FC EXAMPLES OF COMMON MODEL CODES: FC1-1 1 ports and standard gpm rotary spool. FC1-1 1/ /2 ports and 9 gpm rotary spool. FC1-2*1... Number 2SAE ports and gpm rotary spool. FC CREATING A MODEL CODE FOR FC S: F C 1 PORT SIZE: 1 1 NPT (- gpm standard) 1 1/ 1 1/ NPT (-9 gpm standard) 1 1/2 1 1/2 NPT (-9 gpm standard) 16 - #16SAE (1 /16 12) (- gpm standard) 2 - #2SAE (1 7/ 12) (-9 gpm standard) FLOW SETTING: *1 - gpm (-19.3 lpm) ** - Need not specify for standard flow setting noted under PORT SIZE Pressure Drop (psi) FC FLOW & PRESSURE INFO: Pressure Drop vs. Flow 9 Control Flow 7 6 Excess Flow Flow vs. Dial Plate -9 gpm Rotary Lever Spool - gpm Rotary Spool Dial Plate Number (-1) DIMENSIONAL DATA: Ø11/32 TRU ( PLACES) CONTROL FLOW FLOW 1" x 1" ( PLACES) MOUNTING PADS CF EX BRAND YDRAULICS BRAND YDRAULICS 2.12" REF 1." Ø1." BR 1 Y 3 D= OMA S.N. OMAA 6 7 Ø/16 SPRING PIN (2 PLACES).37" REF A, 1.6".6" IN Page B-6 1." 3. REF.13" 1.6" 2.6" 1." 6.62 REF.3"