The FS6803 branch tee gives you three connection points in one compact fitting, making it easier to create a hydraulic branch without combining multiple separate adapters. Gear House Hydraulics lists the fitting for high-pressure applications and systems exposed to continuous mechanical shock.
Three-Way Hydraulic Flow Connection
A branch tee is used when a hydraulic circuit needs an additional connection point for fluid distribution.
FS6803 keeps the two ORFS connections on the main line while providing an ORB male branch outlet. This arrangement can be used to connect another hydraulic component, line, valve, manifold, or circuit from the main flow path.
The three-port design is particularly useful when a hydraulic system needs compact and organized line routing.
Male ORFS Connections
The two ORFS ports use O-Ring Face Seal technology. The sealing O-ring sits at the face of the connection and creates a reliable sealing interface with the compatible mating component.
ORFS connections are commonly selected for hydraulic systems where leakage control, vibration resistance, and dependable sealing are important.
For proper installation, the mating ORFS components should be the correct size and the sealing surfaces and O-rings should be inspected before assembly.
Male ORB Branch Connection
The third connection is a Male O-Ring Boss (ORB) port.
ORB fittings use straight threads together with an O-ring to create the seal against the compatible hydraulic port. This provides a different connection arrangement from the ORFS ends while allowing both sealing technologies to be incorporated into the same branch tee.
This makes FS6803 useful for hydraulic systems that combine ORFS and ORB components.
Steel & Forged Construction
FS6803 is available in steel, while industry specifications for this series identify carbon steel construction with forged shaping. The fitting is also specified with trivalent zinc plating for corrosion protection.
The forged steel construction is suitable for demanding hydraulic environments where fittings can experience pressure, vibration, mechanical shock, and repeated equipment operation.
High-Pressure Hydraulic Applications
Gear House Hydraulics lists FS6803 with working pressures up to 6,000 PSI, depending on tube and fitting size. The collection specifically identifies the fitting for high-pressure applications and applications involving continuous mechanical shock.
Actual working pressure should always be confirmed for the selected size and complete hydraulic assembly, including hoses, tubes, mating fittings, and operating conditions.
Why Use an ORFS × ORFS × ORB Branch Tee?
FS6803 is useful when a hydraulic circuit requires a branch connection but the existing equipment uses different sealing configurations.
Instead of using multiple adapters, the branch tee combines the required connections into one fitting.
It can help:
- Create an additional hydraulic flow path
- Connect ORFS lines to an ORB port
- Reduce the number of separate adapters
- Keep hydraulic layouts more compact
- Simplify hose and tube routing
- Provide a practical branch connection
- Maintain reliable O-ring-based sealing
Where FS6803 Is Used
FS6803 can be used across a wide range of hydraulic and fluid power equipment, including:
- Mobile hydraulic equipment
- Construction machinery
- Agricultural machinery
- Industrial hydraulic systems
- Hydraulic manifolds
- Pumps and valves
- Hydraulic hose assemblies
- Heavy equipment
- OEM hydraulic assemblies
- Manufacturing equipment
- Fluid power systems
Its three-way configuration is especially useful where multiple hydraulic lines need to meet at one connection point.
FS6803 Key Features
- Male ORFS × Male ORFS × Male ORB
- Three-port branch tee design
- ORFS O-ring face sealing
- ORB O-ring sealing
- Steel construction
- Forged carbon steel design
- Trivalent zinc protective finish
- Multiple equal and reducing sizes
- Working pressure up to 6,000 PSI, size dependent
- Suitable for high-pressure hydraulic systems
- Designed for applications exposed to vibration and mechanical shock
- SAE 520429 series specification
Designed for Practical Hydraulic Connections
The biggest advantage of FS6803 is the combination of two ORFS connections and one ORB branch in a single fitting.
This gives hydraulic installers a straightforward way to add a branch to an existing circuit without creating an unnecessarily complicated adapter stack.
For equipment where space, sealing reliability, and proper hydraulic routing matter, the FS6803 provides a compact three-way connection designed for demanding fluid power applications.
Why Choose Gear House Hydraulics?
Gear House Hydraulics offers FS6803 branch tees in multiple connection sizes so you can select the configuration that matches your hydraulic system.
Before ordering, confirm all three connection sizes and thread configurations against your existing hose, tubing, ORFS components, and ORB port. Choosing the correct size ensures proper fitment and helps the complete hydraulic assembly perform as intended.
Frequently Asked Questions
What is an FS6803 fitting?
FS6803 is a hydraulic branch tee with two Male ORFS connections and one Male ORB branch connection.
What is the connection configuration?
The fitting uses Male ORFS × Male ORFS × Male ORB connections.
What is the difference between ORFS and ORB?
ORFS uses an O-ring face seal, while ORB uses a straight thread with an O-ring to seal against a compatible port.
What material is FS6803 made from?
FS6803 is listed as steel, with industry specifications identifying carbon steel and forged construction.
What finish does FS6803 have?
The series is specified with a trivalent zinc protective finish.
What pressure can FS6803 handle?
Gear House Hydraulics lists working pressures up to 6,000 PSI, depending on tube and fitting size.
What sizes are available?
The FS6803 series is available in sizes ranging from 1/4" to 1-1/2", with equal and reducing combinations available.
Where is FS6803 commonly used?
It can be used in mobile hydraulics, construction equipment, agricultural machinery, industrial hydraulic systems, OEM assemblies, manifolds, and other fluid power applications.
Does FS6803 have an adjustable ORB stud?
No. Unlike the FS6804 adjustable run tee, FS6803 is a branch tee with a standard Male ORB branch connection. This distinction should be kept clear when selecting between the two fittings.
Is FS6803 suitable for high-pressure systems?
Yes. The Gear House collection lists it for high-pressure applications and working pressures up to 6,000 PSI, depending on size.
