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MODEL
YDCF
Regenerative assembly
CAPACITY: 40 L/min.
A to B
B to A
The full time regenerative valve assembly allows a double-acting, single rod cylinder to be extended more rapidly
using the same pump flow. To achieve this, oil from the rod end of the cylinder is added to the flow to the blind end,
increasing the rate of extension.
snhy.com/
YDCF
TECHNICAL DATA
Capacity 40 L/min.
Body Type Sandwich
Interface ISO 03
Body Features A to B or B to A
Stack Height 44,5 mm
Seal Plate Included (see notes) Yes
Model Weight 0.69 kg.
NOTES
Customer to install locating pin (included) for functional orientation desired.
Stack height value in technical data table includes seal retainer plate.
For detailed information regarding the cartridges contained in this assembly, click on the models codes shown in the Included Components tab.
Important: Carefully consider the maximum system pressure. The pressure rating of the manifold is dependent on the manifold material, with the port
type/size a secondary consideration. Manifolds constructed of aluminum are not rated for pressures higher than 3000 psi (210 bar), regardless of the port
type/size specified.
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MODEL
YDCF
Regenerative assembly
CAPACITY: 40 L/min.
Continued from
previous page
(X)CONTROL
X Not Adjustable
(C)CRACKING PRESSURE
C 30 psi (2 bar)
A 4 psi (0,3 bar)
B 15 psi (1 bar)
D 50 psi (3,5 bar)
E 75 psi (5 bar)
F 100 psi (7 bar)
(N)SEAL MATERIAL
N Buna-N
V Viton
(A)
1 2 3 4
5 6 7 8
9 10 11 12
OPTION SELECTION EXAMPLE: YDCFXCNAA
PRIMARY CARTRIDGE
A A (with CXCE primary cartridge, Free flow side to nose check valve with port 3 blocked)
INCLUDED COMPONENTS
Part Description Quantity
500-001-012 O-Ring 4
700-002 Seal Plate 1
811-001-006 Pin 1
850-004-218 Plug 2
CODAXEN Cartridge 1
CXCEXCN Cartridge - Primary 1
TECHNICAL FEATURES
Capacity refers to pump flow or regeneration flow, which is the flow coming out of the rod side of the cylinder, whichever is larger
The capacity may be determined by the passages dictated by the sandwich pattern rather than the cartridge capacity.
This valve assembly will not prevent a load from extending the cylinder. The best way to prevent this is to use a vented counterbalance valve mounted directly to
the rod end of the cylinder. A non-vented valve will not work.
The ideal cylinder ratio to use with regeneration is 2:1, the blind end area being twice what the annular area at the rod end. A 2:1 cylinder in regen gives the same
speed extending as retracting.
Cylinders with ratios above 2:1 (large rods) will function correctly but with less speed gain. Intensification needs to be considered with higher ratios. A 2:1 cylinder
may generate a pressure on the rod side that is twice system pressure unless steps are taken to limit it.
Cylinders with ratios as low as 1.5:1 (small rods) may work if care is used in designing the application. As the rod diameter gets smaller in relation to the piston
diameter the flows increase dramatically and the force available drops accordingly.
Cylinders with ratios below 1.5:1 are unlikely to result in a working regenerative application because of the small area of the rod and the high flows that would be
generated.
When a cylinder is in the regenerative mode the only force available is the pressure working on the rod area.
Regeneration is only possible in the extend direction.
MANIFOLD FACES
FACE GRID
PRIMARY CARTRIDGE CONFIGURATION
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Face 2
Face 5
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Face 6
Face 7
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Face 8
Face 10
