Sun Hydraulics DKFR8HN T-8A Control Cavity Vent-To-Open

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Seller: hgreseller ✉️ (212) 100%, Location: Homer Glen, Illinois, US, Ships to: US & many other countries, Item: 143734552504 Sun Hydraulics DKFR8HN T-8A Control Cavity Vent-To-Open.

This is a normally closed, balanced poppet, switching element with an integral T-8A control cavity. With a 2-way valve in the closed position installed in the T-8A control cavity, the poppet remains closed. Opening the 2-way valve shifts the poppet to the open position, provided there is sufficient pressure at port 3.

  • Unique balanced construction provides predictable switching with 5000 psi (350 bar) at port 1 and port 2. Switching will only occur when both a minimum pilot pressure of 400 psi (30 bar) is present and pilot control valve is open.
  • These valves are hydraulically balanced between port 1 and port 2.
  • Port 1 and port 2 are fully sealed from port 3 and port 4. Ports 3 and 4 are positively sealed.
  • Any backpressure at the drain port is directly additive to the required pilot pressure for reliable operation.
  • Leakage rate between port 1 and port 2 is very low, typically less than 10 drops/min. at 5000 psi (0,7 cc/min at 350 bar).
  • Valve will reseat when the pilot pressure falls below 145 psi (10 bar).
  • NOTE: With the -8 control option, the main stage valve should first be installed to the correct torque value. The T-8A pilot control valve should then be installed 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 logic cartridge via the T-8A cavity. These pilot control cartridges are sold separately and include electro-proportional, solenoid, air pilot, and hydraulic pilot operation. See Pilot Control Cartridges.
  • All ports will accept 5000 psi (350 bar).
  • 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 T-22A
Series 2
Capacity 120 L/min.
Minimum Pilot Pressure Required to Shift Valve 20 bar
Maximum Operating Pressure 350 bar
Control Pilot Flow See Performance Data
Maximum Valve Leakage at 110 SUS (24 cSt) 0,7 cc/min.@350 bar
Pilot Control Cavity T-8A
Pilot Control Valve Installation Torque 27 - 33 Nm
Pilot Control Valve Hex Size 22,2 mm
Valve Hex Size 28,6 mm
Valve Installation Torque 61 - 68 Nm
  • Condition: New
  • Brand: Sun Hydraulics
  • MPN: DKFR-8HN

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