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

Capacity: 50 gpm200 L/min. | Cavity: T-53AD
FTFA : 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-53AD
Series 3
Capacity 50 gpm200 L/min.
Minimum Pilot Pressure Required to Shift Valve 60 psi4 bar
Pilot Pressure Required for Full Shift at Rated Flow 300 psi20 bar
Maximum Operating Pressure 5000 psi350 bar
Maximum Valve Leakage at 110 SUS (24 cSt) 10 in³/min.@1000 psi160 cc/min.@70 bar
Pilot Volume Displacement .10 in³1,6 cc
Adjustment - No. of CCW Turns from Fully Closed to Fully Open 55
Hysteresis ± 2 %± 2 %
Valve Hex Size 1 1/4 in.31,8 mm
Valve Installation Torque 150 - 160 lbf ft203 - 217 Nm
Adjustment Screw Internal Hex Size 5/32 in.4 mm
Locknut Hex Size 9/16 in.15 mm
Locknut Torque 80 - 90 lbf in.9 - 10 Nm
Model Weight 3.10 lb1,40 kg
Seal kit - Cartridge Buna: 990053007
Seal kit - Cartridge Viton: 990053006
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-53A line mount manifold, plug unused ports and expect higher pressure drops.
Additional Resources [ + ]