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Priority Flow Control
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Model

YRDRLAWNNLK

Control
  • Standard Options
  • C
    Tamper Resistant - Factory Set
  • K
    Handknob
  • L
    Standard Screw Adjustment
  • W
    Hex Wrench Adjustment
  • Y
    Tri-Grip Handknob
  • Additional Options
  • F
    Hex Head Screw with Locknut
  • J
    Capped Screw Adjustment
  • M
    Capped Screw Adjustment with Lockwire Holes
  • O
    Handknob with Panel Mount
  • Q
    Capped and Lockwired
  • R
    Lockwired Screw Adjustment
  • T
    Tamper Proof - Factory Set
Adjustment Range
  • Standard Options
  • A
    100 - 3000 psi (7 - 210 bar), 1000 psi (70 bar) Standard Setting
  • B
    50 - 1500 psi (3,5 - 105 bar), 1000 psi (70 bar) Standard Setting
  • C
    150 - 6000 psi (10,5 - 420 bar), 1000 psi (70 bar) Standard Setting
  • D
    25 - 800 psi (1,7 - 55 bar), 400 psi (28 bar) Standard Setting
  • E
    25 - 400 psi (1,7 - 28 bar), 200 psi (14 bar) Standard Setting
  • N
    60 - 800 psi (4 - 55 bar), 400 psi (28 bar) Standard Setting
  • Q
    60 - 400 psi (4 - 28 bar), 200 psi (14 bar) Standard Setting
  • W
    150 - 4500 psi (10,5 - 315 bar), 1000 psi (70 bar) Standard Setting
  • Additional Options
  • G
    60 - 3000 psi (4 - 210 bar), 1000 psi (70 bar) Standard Setting
  • H
    30 - 3000 psi (2 - 210 bar), 1000 psi (70 bar) Standard Setting
  • K
    75 - 1500 psi (5 - 105 bar), 1000 psi (70 bar) Standard Setting
  • P
    40 - 400 psi (2,8 - 28 bar), 200 psi (14 bar) Standard Setting
  • V
    150 - 800 psi (10,5 - 55 bar), 400 psi (28 bar) Standard Setting
Adjustment Range
  • Standard Options
  • D
    25 - 3000 psi (1,7 - 210 bar)
  • W
    100 - 5000 psi (7 - 350 bar)
Seal Material
  • Standard Options
  • N
    Buna-N
  • V
    Viton
Seal Material
  • Standard Options
  • N
    Buna-N
  • V
    Viton
Control Letter(s) of Subordinate Cartridge
  • Standard Options
  • L
    Tuning Adjust (with RPEC primary cartridge, Pilot-operated, balanced piston relief valve)
  • X
    Non-Adjustable (with RPEC primary cartridge, Pilot-operated, balanced piston relief valve)
  • L
    Tuning Adjust (with RPEC8 primary cartridge, Pilot-operated, balanced piston relief main stage with integral T-8A control cavity)
  • X
    Non-Adjustable (with RPEC8 primary cartridge, Pilot-operated, balanced piston relief main stage with integral T-8A control cavity)
Port and Material Designation
  • Standard Options
  • A
    Ports EF & P — 1/4" NPTF; Ports CF & T — 1/4" NPTF; Gage Port — 1/4" NPTF; Aluminum
  • A/S
    Ports EF & P — 1/4" NPTF; Ports CF & T — 1/4" NPTF; Gage Port — 1/4" NPTF; Iron
  • B
    Ports EF & P — 3/8" NPTF; Ports CF & T — 3/8" NPTF; Gage Port — 1/4" NPTF; Aluminum
  • B/S
    Ports EF & P — 3/8" NPTF; Ports CF & T — 3/8" NPTF; Gage Port — 1/4" NPTF; Iron
  • C
    Ports EF & P — 1/2" NPTF; Ports CF & T — 3/8" NPTF; Gage Port — 1/4" NPTF; Aluminum
  • C/S
    Ports EF & P — 1/2" NPTF; Ports CF & T — 3/8" NPTF; Gage Port — 1/4" NPTF; Iron
  • I
    Ports EF & P — SAE 6; Ports CF & T — SAE 6; Gage Port — 1/4" NPTF; Aluminum
  • I/S
    Ports EF & P — SAE 6; Ports CF & T — SAE 6; Gage Port — 1/4" NPTF; Iron
  • J
    Ports EF & P — SAE 8; Ports CF & T — SAE 8; Gage Port — 1/4" NPTF; Aluminum
  • J/S
    Ports EF & P — SAE 8; Ports CF & T — SAE 8; Gage Port — 1/4" NPTF; Iron
  • K
    Ports EF & P — SAE 10; Ports CF & T — SAE 8; Gage Port — 1/4" NPTF; Aluminum
  • K/S
    Ports EF & P — SAE 10; Ports CF & T — SAE 8; Gage Port — 1/4" NPTF; Iron
  • T
    Ports EF & P — 1/4" BSPP; Ports CF & T — 1/4" BSPP; Gage Port — 1/4" BSPP; Aluminum
  • T/S
    Ports EF & P — 1/4" BSPP; Ports CF & T — 1/4" BSPP; Gage Port — 1/4" BSPP; Iron
  • U
    Ports EF & P — 3/8" BSPP; Ports CF & T — 3/8" BSPP; Gage Port — 1/4" BSPP; Aluminum
  • U/S
    Ports EF & P — 3/8" BSPP; Ports CF & T — 3/8" BSPP; Gage Port — 1/4" BSPP; Iron
  • V
    Ports EF & P — 1/2" BSPP; Ports CF & T — 3/8" BSPP; Gage Port — 1/4" BSPP; Aluminum
  • V/S
    Ports EF & P — 1/2" BSPP; Ports CF & T — 3/8" BSPP; Gage Port — 1/4" BSPP; Iron
Model: YRDR

Fixed-orifice, bypass/restrictive, priority flow control with relief assembly

Capacity:

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Model

YRDRLAWNNLK

Control
  • Standard Options
  • C
    Tamper Resistant - Factory Set
  • K
    Handknob
  • L
    Standard Screw Adjustment
  • W
    Hex Wrench Adjustment
  • Y
    Tri-Grip Handknob
  • Additional Options
  • F
    Hex Head Screw with Locknut
  • J
    Capped Screw Adjustment
  • M
    Capped Screw Adjustment with Lockwire Holes
  • O
    Handknob with Panel Mount
  • Q
    Capped and Lockwired
  • R
    Lockwired Screw Adjustment
  • T
    Tamper Proof - Factory Set
Adjustment Range
  • Standard Options
  • A
    100 - 3000 psi (7 - 210 bar), 1000 psi (70 bar) Standard Setting
  • B
    50 - 1500 psi (3,5 - 105 bar), 1000 psi (70 bar) Standard Setting
  • C
    150 - 6000 psi (10,5 - 420 bar), 1000 psi (70 bar) Standard Setting
  • D
    25 - 800 psi (1,7 - 55 bar), 400 psi (28 bar) Standard Setting
  • E
    25 - 400 psi (1,7 - 28 bar), 200 psi (14 bar) Standard Setting
  • N
    60 - 800 psi (4 - 55 bar), 400 psi (28 bar) Standard Setting
  • Q
    60 - 400 psi (4 - 28 bar), 200 psi (14 bar) Standard Setting
  • W
    150 - 4500 psi (10,5 - 315 bar), 1000 psi (70 bar) Standard Setting
  • Additional Options
  • G
    60 - 3000 psi (4 - 210 bar), 1000 psi (70 bar) Standard Setting
  • H
    30 - 3000 psi (2 - 210 bar), 1000 psi (70 bar) Standard Setting
  • K
    75 - 1500 psi (5 - 105 bar), 1000 psi (70 bar) Standard Setting
  • P
    40 - 400 psi (2,8 - 28 bar), 200 psi (14 bar) Standard Setting
  • V
    150 - 800 psi (10,5 - 55 bar), 400 psi (28 bar) Standard Setting
Adjustment Range
  • Standard Options
  • D
    25 - 3000 psi (1,7 - 210 bar)
  • W
    100 - 5000 psi (7 - 350 bar)
Seal Material
  • Standard Options
  • N
    Buna-N
  • V
    Viton
Seal Material
  • Standard Options
  • N
    Buna-N
  • V
    Viton
Control Letter(s) of Subordinate Cartridge
  • Standard Options
  • L
    Tuning Adjust (with RPEC primary cartridge, Pilot-operated, balanced piston relief valve)
  • X
    Non-Adjustable (with RPEC primary cartridge, Pilot-operated, balanced piston relief valve)
  • L
    Tuning Adjust (with RPEC8 primary cartridge, Pilot-operated, balanced piston relief main stage with integral T-8A control cavity)
  • X
    Non-Adjustable (with RPEC8 primary cartridge, Pilot-operated, balanced piston relief main stage with integral T-8A control cavity)
Port and Material Designation
  • Standard Options
  • A
    Ports EF & P — 1/4" NPTF; Ports CF & T — 1/4" NPTF; Gage Port — 1/4" NPTF; Aluminum
  • A/S
    Ports EF & P — 1/4" NPTF; Ports CF & T — 1/4" NPTF; Gage Port — 1/4" NPTF; Iron
  • B
    Ports EF & P — 3/8" NPTF; Ports CF & T — 3/8" NPTF; Gage Port — 1/4" NPTF; Aluminum
  • B/S
    Ports EF & P — 3/8" NPTF; Ports CF & T — 3/8" NPTF; Gage Port — 1/4" NPTF; Iron
  • C
    Ports EF & P — 1/2" NPTF; Ports CF & T — 3/8" NPTF; Gage Port — 1/4" NPTF; Aluminum
  • C/S
    Ports EF & P — 1/2" NPTF; Ports CF & T — 3/8" NPTF; Gage Port — 1/4" NPTF; Iron
  • I
    Ports EF & P — SAE 6; Ports CF & T — SAE 6; Gage Port — 1/4" NPTF; Aluminum
  • I/S
    Ports EF & P — SAE 6; Ports CF & T — SAE 6; Gage Port — 1/4" NPTF; Iron
  • J
    Ports EF & P — SAE 8; Ports CF & T — SAE 8; Gage Port — 1/4" NPTF; Aluminum
  • J/S
    Ports EF & P — SAE 8; Ports CF & T — SAE 8; Gage Port — 1/4" NPTF; Iron
  • K
    Ports EF & P — SAE 10; Ports CF & T — SAE 8; Gage Port — 1/4" NPTF; Aluminum
  • K/S
    Ports EF & P — SAE 10; Ports CF & T — SAE 8; Gage Port — 1/4" NPTF; Iron
  • T
    Ports EF & P — 1/4" BSPP; Ports CF & T — 1/4" BSPP; Gage Port — 1/4" BSPP; Aluminum
  • T/S
    Ports EF & P — 1/4" BSPP; Ports CF & T — 1/4" BSPP; Gage Port — 1/4" BSPP; Iron
  • U
    Ports EF & P — 3/8" BSPP; Ports CF & T — 3/8" BSPP; Gage Port — 1/4" BSPP; Aluminum
  • U/S
    Ports EF & P — 3/8" BSPP; Ports CF & T — 3/8" BSPP; Gage Port — 1/4" BSPP; Iron
  • V
    Ports EF & P — 1/2" BSPP; Ports CF & T — 3/8" BSPP; Gage Port — 1/4" BSPP; Aluminum
  • V/S
    Ports EF & P — 1/2" BSPP; Ports CF & T — 3/8" BSPP; Gage Port — 1/4" BSPP; Iron
See CAD Files tab below to request images.
Function
Function image

Technical specifications

  • Modifiers
    Ports
    • A, A/S
      Ports EF & P: 1/4" NPTF; Ports CF & T: 1/4" NPTF; Gage Port: 1/4" NPTF;
    • B, B/S
      Ports EF & P: 3/8" NPTF; Ports CF & T: 3/8" NPTF; Gage Port: 1/4" NPTF;
    • C, C/S
      Ports EF & P: 1/2" NPTF; Ports CF & T: 3/8" NPTF; Gage Port: 1/4" NPTF;
    • I, I/S
      Ports EF & P: SAE 6; Ports CF & T: SAE 6; Gage Port: 1/4" NPTF;
    • J, J/S
      Ports EF & P: SAE 8; Ports CF & T: SAE 8; Gage Port: 1/4" NPTF;
    • K, K/S
      Ports EF & P: SAE 10; Ports CF & T: SAE 8; Gage Port: 1/4" NPTF;
    • T, T/S
      Ports EF & P: 1/4" BSPP; Ports CF & T: 1/4" BSPP; Gage Port: 1/4" BSPP;
    • U, U/S
      Ports EF & P: 3/8" BSPP; Ports CF & T: 3/8" BSPP; Gage Port: 1/4" BSPP;
    • V, V/S
      Ports EF & P: 1/2" BSPP; Ports CF & T: 3/8" BSPP; Gage Port: 1/4" BSPP;
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    This assembly consists of a bypass/restrictive, fixed-orifice, priority flow control which takes an input flow at port P and uses it to satisfy the priority flow at port CF. If the input flow exceeds the priority flow requirement, the excess is bypassed out port EF. The bypass flow may be used in a secondary circuit. The relief valve protects the controlled flow from over-pressurization, relieving excess flow out of port T.

    • Customer must specify a flow rating. Factory set flow ratings are within +/- 10% of the requested setting.
    • The tuneable control option provides +/- 25% variation from the nominal factory pre-set flow. Turn the adjustment clockwise to increase.
    • Both priority and bypass flow are usable up to the system operating pressure.
    • Pressure at the bypass port (port EF) may exceed pressure at the priority port (port CF).
    • Bypass flow is not available until priority flow requirements are satisfied.
    • The sharp-edged orifice design minimizes flow variations due to viscosity changes.
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    • Body Type
      Line mount
    • Capacity
      15 gpm
    • Control Flow Range
      .2 - 50 gpm
    • Mounting Hole Diameter
      .34 in.
    • Mounting Hole Depth
      Through
    • Mounting Hole Quantity
      2

    Model CAD Files

    Files not yet avialable. Click below to request them.

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    • 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?
      • Back to Top
    • 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.
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