Normally closed, modulating element with pilot source from port 1

Capacity: 7.5 gpm30 L/min. | Cavity: T-163A
LRBA : Normally closed, modulating element with pilot source from port 1
Technical Features [ + ]

Normally closed modulating elements with an internal orifice between port 1 and port 3 can be used as a main-stage relief valve. The valve can be controlled remotely using a pilot relief or pilot solenoid valve.

  • A tuning adjustment (models configured with an L control) is available to vary the pressure drop across the compensator to increase/decrease flow within +/-25% of setting.
  • 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.
Technical Data [ + ]
Note: Data may vary by configuration. See CONFIGURATION section.
Cavity T-163A
Series 0
Capacity 7.5 gpm30 L/min.
Maximum Operating Pressure 5000 psi350 bar
Control Pilot Flow 10 - 15 in³/min.0,16 - 0,25 L/min.
Control Orifice Diameter .016 in.0,4 mm
Valve Hex Size 3/4 in.19,1 mm
Valve Installation Torque 20 - 25 lbf ft27 - 33 Nm
Seal kit - Cartridge Buna: 990163007
Seal kit - Cartridge Polyurethane: 990163002
Seal kit - Cartridge Viton: 990163006
FAQs [ + ]

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

Only external seals are serviceable.  Sun offers replacement seal kits for all cartridge models. The applicable kit part number can be found in the product page's Technical Data table or by using our Cartridge Seal Kit search function located under Accessories. Please note: Converting the external seals from one material to another does not ensure fluid compatibility with that material due to the existence of internal seals within the cartridge.
Additional Resources [ + ]