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MODEL

YDGH

ISO 08, high capacity, full time regenerative assembly

CAPACITY: 320 L/min.

CONFIGURATION

X Control Not Adjustable

C Cracking

Pressure

30 psi (2 bar)

N Seal

Material

Buna-N

C Primary

Cartridge

C (with CXIE primary cartridge, Free

flow side to nose check valve with port

3 blocked)

A/S Material

Designation

A/S Iron

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/

YDGH

TECHNICAL DATA

Body Type Sandwich

Interface ISO 08

Capacity 320 L/min.

Body Features B to A

Stack Height 87 mm

Seal Plate Included (see notes) No

Model Weight 13.05 kg.

NOTES

Seal retainer plate is not required for this assembly.

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

YDGH

ISO 08, high capacity, full time regenerative assembly

CAPACITY: 320 L/min.

Continued from

(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

(C)

1 2 3 4

5 6 7 8

9 10 11 12

OPTION SELECTION EXAMPLE: YDGHXCNCA/S

PRIMARY CARTRIDGE

C C (with CXIE primary cartridge, Free flow side to nose check valve with port 3 blocked)

INCLUDED COMPONENTS

Part Description Quantity

500-001-114 O-Ring 2

500-001-121 O-Ring 4

811-001-002 Locating Pin 1

A330-006-004 SAE Plug 2

COJAXEN Cartridge 1

CXIEXCN 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

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 5

Face 6

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Face 7

Face 8

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Face 10