2-way, pilot shifted, dual path, proportional throttle

Capacity: 30 gpm120 L/min. | Cavity: T-52AD
FTDA : 2-way, pilot shifted, dual path, proportional throttle
Technical Features [ + ]

This valve is a 2-way, 2-position proportional throttle. Ports 2 and 3 are normally closed. Pilot pressure at port 1 opposes the spring and creates a variable metering orifice between port 2 and 3 that is proportional to the pressure at 1. The force balance of the flow forces, spring and pilot pressure results in a degree of partial self-compensation as the load pressure changes.

Pressure at port 4 directly opposes pressure at port 1.

The valve uses a dual-path design. Ports 2 and 3 incorporate a double-port area.

  • These valves may be pressure compensated by an external, modulating, logic element. Use LR_C-XHN for a bypass circuit or LP_C-XHN for a restrictive circuit.
  • The valve provides a degree of self-compensation and may be used as a flow control. To increase the accuracy of flow control, an external, modulating, logic element can be used to maintain a constant flow over a wider range of flows and pressures. See performance curves for additional information.
  • The optional L control is a stroke adjustment that limits maximum flow.
  • Ports 1 and 4 should be limited to 500 psi (35 bar).
  • Pressure at port 4 directly opposes pressure at port 1.
  • Accurate pressure compensated control requires that a constant pressure differential be maintained across the valve.
  • 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.
Technical Data [ + ]
Note: Data may vary by configuration. See CONFIGURATION section.
Cavity T-52AD
Series 2
Capacity 30 gpm120 L/min.
Pilot Pressure Required to Shift Valve 50 - 120 psi3,5 - 8 bar
Pilot Pressure Required for Full Shift at Rated Flow 290 - 340 psi20 - 23 bar
Maximum Operating Pressure 5000 psi350 bar
Maximum Valve Leakage at 110 SUS (24 cSt) 5 in³/min.@1000 psi80 cc/min.@70 bar
Pilot Volume Displacement .05 in³0,82 cc
Hysteresis 35 %35 %
Valve Hex Size 1 1/8 in.28,6 mm
Valve Installation Torque 45 - 50 lbf ft61 - 68 Nm
Seal kit - Cartridge Buna: 990152007
Seal kit - Cartridge Viton: 990152006
Performance Curves [ + ]
FAQs [ + ]

There are exactly 250 Sun drops in a cubic inch or 15 in a cc.

Notes [ + ]
  • When installed in Sun's standard T-52A line mount manifold, plug unused ports and expect higher pressure drops.
Additional Resources [ + ]