Model

YSDALANCK

Control
Adjustment Range
Seal Material
Range Letter(s) of Subordinate Cartridge
Port and Material Designation

Model: YSDA

Pilot-operated, balanced piston sequence assembly with reverse flow check

Capacity:

Model

YSDALANCK

Control
Adjustment Range
Seal Material
Range Letter(s) of Subordinate Cartridge
Port and Material Designation
Function
Function image

Technical specifications

  • Modifiers
    Ports
    • A, A/S
      Ports 1 & 2: 1/4" NPTF; Port 3: 1/4" NPTF;
    • B, B/S
      Ports 1 & 2: 3/8" NPTF; Port 3: 1/4" NPTF;
    • C, C/S
      Ports 1 & 2: 1/2" NPTF; Port 3: 1/4" NPTF;
    • I, I/S
      Ports 1 & 2: SAE 6; Port 3: SAE 6;
    • J, J/S
      Ports 1 & 2: SAE 8; Port 3: SAE 6;
    • K, K/S
      Ports 1 & 2: SAE 10; Port 3: SAE 6;
    • T, T/S
      Ports 1 & 2: 1/4" BSPP; Port 3: 1/4" BSPP;
    • U, U/S
      Ports 1 & 2: 3/8" BSPP; Port 3: 1/4" BSPP;
    • V, V/S
      Ports 1 & 2: 1/2" BSPP; Port 2: 1/4" BSPP;

    Pilot-operated, balanced piston sequence valves will supply a secondary circuit with flow once the pressure at the inlet (port 1) has exceeded the valve setting. The pressure setting of a sequence valve controls the pressure at port 1 relative to the pressure at the drain (port 3). These valves are insensitive to back pressure at port 2 (sequence), up to the valve setting. They may be used to regulate pressure in place of 2-port relief valves if there is pressure in the return line. Additionally, these assemblies incorporate an integral check valve to provide reverse free flow from port 2 (sequence) to port 1 (inlet).

    • All 3 port sequence cartridges are physically and functionally interchangeable (i.e. same flow path, same cavity for a given frame size).
    • Pilot flow continues to increase as the pressure at port 1 (inlet), relative to the pressure at port 3 (drain), rises above the valve setting.
    • Pressure at port 3 is directly additive to the valve setting at a 1:1 ratio and should not exceed 5000 psi (350 bar).
    • Not suitable for use in load holding applications due to spool leakage.
    • Incorporates the Sun floating style construction to minimize the possibility of internal parts binding due to excessive installation torque and/or cavity/cartridge machining variations.
    • Body Type
      Line mount
    • Capacity
      15 gpm
    • Mounting Hole Diameter
      .28 in.
    • Mounting Hole Depth
      Through
    • Mounting Hole Quantity
      2

    Model CAD Files

    Click the link of the file format you want to download.

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    • Direct acting or pilot operated - what do I use?
    • 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.
    • For detailed information regarding the cartridges contained in this assembly, click on the models codes shown in the Included Components tab.