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Model

YNAALCNAA

   
   
Control
Maximum Orifice Diameter
Seal Material
Primary Cartridge
Port and Material Designation
Model: YNAA

Pressure reducing on P, pilot choke on T assembly

Capacity:

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Model

YNAALCNAA

   
   
Control
Maximum Orifice Diameter
Seal Material
Primary Cartridge
Port and Material Designation
Function
Function image
Pilot choke
Function image
Function image

Technical specifications

This assembly consists of pilot-operated, pressure reducing valve which reduces a high primary pressure at the inlet (P port) to a constant reduced pressure downstream. Additionally, the assembly provides speed control via a fully adjustable needle valve from ports A and B to T. This arrangement is also known as pilot choke when used in conjunction with and ISO 03 solenoid directional valve to pilot a larger valve.

  • Full reverse flow from reduced pressure (port 1) to inlet (port 2) may cause the main spool to close. If reverse free flow is required in the circuit, consider adding a separate check valve to the circuit.
  • Minimum setting is 75 psi (5 bar) for all spring ranges.
  • Pilot operated valves exhibit exceptionally flat pressure/flow characteristics, are very stable and have low hysteresis.
  • Pressure at port 3 is directly additive to the valve setting at a 1:1 ratio and should not exceed 3000 psi (210 bar).
  • Because needle valves are non-compensating devices, the fixed orifice size will regulate flow through the valve in proportion to the square root of the pressure differential across ports 1 and 2.
  • Body Type
    Sandwich
  • Interface
    ISO 03
  • Capacity
    10 gpm
  • Body Features
    On P
  • Seal Plate Included (see notes)
    Yes
  • Stack Height
    1.75 in.
  • Why doesn't Sun anodize their aluminum bodies?
  • How big is a drop of hydraulic oil?  
  • Direct acting or pilot operated - what do I use?
  • 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.
  • Part
    Description
    Quantity
  • 500-001-012*
    O-Ring
    4
  • 700-002*
    Seal Plate
    1
  • 811-001-006*
    Pin
    1
  • 850-004-250*
    Plug
    1
  • Cartridge - Primary
    1
  • Cartridge
    1

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