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Model

DFFA8NV

Seal Material
Material/Coating

2-way, poppet directional valve with integral T-8A control cavity - control 1-2

Cavity: T-18A | Capacity:

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Model

DFFA8NV

Seal Material
Material/Coating
See CAD Files tab below to request images.

Technical specifications

This valve is a 2-position, 2-way poppet cartridge that incorporates an integral pilot control cavity. It controls flow from port 1 to port 2, exhibits extremely low leakage rates and will accept 5000 psi (350 bar) at both ports. Installing a pilot solenoid cartridge in the T-8A cavity results in a high-flow directional valve. Other pilot options include manual, hydraulic and pneumatic pilot cartridges.

  • NOTE: The main stage valve should first be installed to the correct torque value followed by the T-8A pilot control section into the main stage valve to its required torque value.
  • The -8 control option allows the pilot control valve to be incorporated directly into the end of the directional cartridge via the T-8A cavity. These pilot control cartridges are sold separately and include solenoid operation, air pilot operation, and hydraulic pilot operation. See Pilot Control Cartridges.
  • Cartridges configured with EPDM seals are for use in systems with phosphate ester fluids. Exposure to petroleum based fluids, greases and lubricants will damage the seals.
  • 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.
  • Cavity
  • Series
  • Capacity
    120 gpm
  • Maximum Operating Pressure
    5000 psi
  • Maximum Valve Leakage at 110 SUS (24 cSt)
    10 drops/min.@5000 psi
  • Pilot Control Cavity
    T-8A
  • Pilot Control Valve Installation Torque
    20 - 25 lbf ft
  • Valve Hex Size
    1 5/8 in.
  • Valve Installation Torque
    350 - 375 lbf ft
  • Model Weight
    1.10 lb
  • Seal kit - Cartridge
  • Seal kit - Cartridge
  • Seal kit - Cartridge
  • Seal kit - Cartridge

Model CAD Files

Files not yet avialable. Click below to request them.

  • What parts of the Sun cartridge valve are field serviceable?
  • How big is a drop of hydraulic oil?  
  • Direct acting or pilot operated - what do I use?
  • DFFA 2-way, 2-stage, solenoid-operated directional poppet valve - flow 1-2
  • DFFA 2-way, 2-stage, solenoid-operated directional poppet valve - flow 1-2
  • Compound cartridge (pilot and main stage) assembly information is provided for reference only. Cartridges must be ordered separately and assembled at point of use.

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