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Reducing

Model

YNAALCNAA

Pilot choke
Control
  • Standard Options
  • L
    Standard Screw Adjustment
  • Additional Options
  • H
    Calibrated Handknob with Detent Lock
  • K
    Handknob
  • O
    Handknob with Panel Mount
  • Y
    Tri-Grip Handknob, Flow Control
Maximum Orifice Diameter
  • Standard Options
  • D
    .09 in. (2,3 mm)
  • Additional Options
  • C
    .19 in. (4,8 mm)
  • I
    .06 in. (1,50 mm)
Seal Material
  • Standard Options
  • N
    Buna-N
  • V
    Viton
Primary Cartridge
  • Standard Options
  • A
    A (with NFCC primary cartridge, Fully adjustable needle valve)
Port and Material Designation
  • Standard Options
  • A
    A Aluminum
  • A/S
    A/S Iron

Model: YNAA

Pressure reducing on P, pilot choke on T assembly

Capacity:

Model

YNAALCNAA

Pilot choke
Control
  • Standard Options
  • L
    Standard Screw Adjustment
  • Additional Options
  • H
    Calibrated Handknob with Detent Lock
  • K
    Handknob
  • O
    Handknob with Panel Mount
  • Y
    Tri-Grip Handknob, Flow Control
Maximum Orifice Diameter
  • Standard Options
  • D
    .09 in. (2,3 mm)
  • Additional Options
  • C
    .19 in. (4,8 mm)
  • I
    .06 in. (1,50 mm)
Seal Material
  • Standard Options
  • N
    Buna-N
  • V
    Viton
Primary Cartridge
  • Standard Options
  • A
    A (with NFCC primary cartridge, Fully adjustable needle valve)
Port and Material Designation
  • Standard Options
  • A
    A Aluminum
  • A/S
    A/S Iron
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.
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  • Body Type
    Sandwich
  • Interface
    ISO 03
  • Capacity
    10 gpm
  • Body Features
    On P
  • Seal Plate Included (see notes)
    Yes
  • Stack Height
    1.75 in.

Model CAD Files

Files not yet avialable. Click below to request them.

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  • Direct acting or pilot operated - what do I use?
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  • 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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  • Part
    Description
    Quantity
  • 500-001-012*
    O-Ring
    4
  • 700-002*
    Seal Plate
    1
  • 811-001-006*
    Pin
    1
  • 850-004-250*
    Plug
    1
  • NFCCLCN
    Cartridge - Primary
    1
  • PBDBLQN
    Cartridge
    1
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