Loading...
Loading...

Model

RSFCFAN

Control
Adjustment Range
Seal Material
Material/Coating

Pilot-operated, balanced piston sequence valve

Cavity: T-2A | Capacity:

Loading...

Model

RSFCFAN

Control
Adjustment Range
Seal Material
Material/Coating

Technical specifications

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.

  • 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.
  • The main stage orifice is protected by a 150 micron stainless steel screen.
  • 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.
  • W and Y controls (where applicable) can be specified with or without a special setting. When no special setting is specified, the valve is adjustable throughout its full range using the W or Y control. When a special setting is specified, this setting represents the maximum setting of the valve.
  • 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
    30 gpm
  • Maximum Operating Pressure
    5000 psi
  • Control Pilot Flow
    10 - 15 in³/min.
  • Factory Pressure Settings Established at
    4 gpm
  • Maximum Valve Leakage at 110 SUS (24 cSt)
    3 in³/min.@1000 psi
  • Response Time - Typical
    10 ms
  • Adjustment - No. of CW Turns from Min. to Max. setting
    5
  • Valve Hex Size
    1 1/8 in.
  • Valve Installation Torque
    45 - 50 lbf ft
  • Adjustment Screw Internal Hex Size
    5/32 in.
  • Locknut Hex Size
    9/16 in.
  • Locknut Torque
    80 - 90 lbf in.
  • Model Weight
    .50 lb
  • Seal kit - Cartridge
  • Seal kit - Cartridge
  • Seal kit - Cartridge
  • Seal kit - Cartridge

Model CAD Files

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

Symbol CAD Files

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

  • What parts of the Sun cartridge valve are field serviceable?
  • What are the tolerances on pressure settings for Sun's pressure control valves?
  • What does Sun mean by the term sequencing?
  • How big is a drop of hydraulic oil?  
  • RSFC8 Pilot-operated, balanced piston sequence main stage with integral T-8A control cavity
  • For Series 1 cartridges configured with an O control (panel mount handknob), a .75 in. (19 mm) diameter hole is required in the panel.

Keep up with Sun