Split Flow Hydraulic Manifold w/ Gauges & Frame, for Double-Acting Cylinders
The SFM-Series offer an economical solution for basic multi-point simultaneous lifting applications and enables a single operator to control a maximum of 4 lifting points from one manifold. The Split-Flow Manifolds are equipped with pressure compensated flow control valves, to preset and limit advance and retract speed of each cylinder, allowing to move up to 4 cylinders simultaneously.
Minimum pump oil flow must be 50 in3/min (ZE4-Series pumps) to deliver 9.1 in3/min per cylinder. Several SFM models can be connected parallel to the same pump to allow simultaneous operation of 8, 12, or 16 cylinders. Higher flow pumps are required to achieve faster advance speeds. A 20% higher oil flow must be considered for proper speed compensation.
Example: When using 4 cylinders: if oil flow of 28 in3/min is required per cylinder, the pump oil flow must be: 4 x 28 = 112 + 20% = 134 in3/min.
The maximum stroke deviation between the cylinders can reach up to 10% depending on the cylinder pressure. Oil flow adjustment is also possible during cylinder operation by fine-tuning using the flow control valves. All cylinders connected to the SFM manifold must have the same capacity (effective area). Both advance and retract speed are limited by the same valves. Use hoses of the same lengths to improve the accuracy of the hydraulic system. improved precision when difference of pressures among the cylinders is within 4350 psi.
Flow Control Valves
The Split-Flow Manifold has pressure compensated flow control valves installed in each outlet line. The oil flow from the SFM-Manifold to each cylinder can be adjusted by turning the knob on the valve.
- 1/2 knob turn is 9.1 in3/min oil flow
- 1 knob turn is 27.4 in3/min oil flow
- 1 1/2 knob turns is 45.8 in3/min oil flow
- 2 knob turns is 54.9 in3/min oil flow
- 2 1/2 knob turns is 79.3 in3/min oil flow
- 3 knob turns is 115.9 in3/min oil flow
- 3 1/2 knob turns is 219.6 in3/min oil flow
- 4 knob turns is 341.6 in3/min oil flow
- 4 1/2 knob turns is 506.3 in3/min oil flow
- Open is 628.3 in3/min oil flow