Part Number: FS2700

SAE ORFS Male Bulkhead Union

Product Overview

The Delphi Fittings Part FS2700 is an SAE O-Ring Face Seal (ORFS) Male Bulkhead Union. This straight fitting is specifically designed to create a secure, leak-proof connection for hydraulic lines passing through a panel, bulkhead, or equipment wall. It features male ORFS flat face ends with O-ring grooves on both sides of the fitting, allowing connection to female ORFS swivel fittings or specially prepared tube ends on either side of the barrier. A locknut is included to securely fasten the union to the panel, ensuring a stable and robust pass-through. Manufactured from high-quality carbon steel and zinc-plated for corrosion resistance, the FS2700 bulkhead union adheres to SAE J1453 / ISO 8434-3 standards, making it ideal for high-pressure applications where reliability and zero-clearance assembly are critical.

Key Features & Specifications

Material	High-Grade Carbon Steel
End 1 Configuration	Male SAE O-Ring Face Seal (ORFS) (conforming to SAE J1453 / ISO 8434-3)
End 2 Configuration	Male SAE O-Ring Face Seal (ORFS) (conforming to SAE J1453 / ISO 8434-3)
Body Style	Straight Bulkhead Union with a threaded body for panel mounting and a separate locknut. Hexagonal features for wrenching.
Sealing Mechanism	Both ORFS ends utilize an elastomeric O-ring (seated in the groove on each male ORFS face) which compresses against the flat face of the mating female ORFS swivel fitting or prepared tube end, creating a superior static face seal. Bulkhead Seal: The locknut secures the fitting to the panel. Depending on the application, an additional washer or sealant might be used by the installer between the fitting shoulder/locknut and the panel for environmental sealing, though this is not standard for the fluid seal itself.
Corrosion Protection	Standard Zinc Plating for enhanced durability and resistance to environmental corrosion.
Included Component	Locknut (e.g., Part FS306 ORFS Bulkhead Locknut)
Primary Function	To provide a straight, through-panel connection for ORFS hydraulic lines, securely mounted with a locknut, and connecting to female ORFS swivel fittings or prepared tubes on both sides.
Working Pressure	Suitable for high-pressure hydraulic systems, often rated up to 6000 PSI or higher depending on size.
O-Ring Material (for both ORFS ends)	Typically Buna-N (Nitrile) 90 Durometer as standard. Viton® (FKM) or other materials available upon request. O-rings are supplied with the fitting.

Commonly Available Sizes (Part #FS2700 Series)

Delphi Fittings offers the FS2700 SAE ORFS Male Bulkhead Union in a comprehensive range of common ORFS sizes. Both male ORFS ends are of the same size.

Examples include (Male ORFS x Male ORFS):

FS2700-04: For 1/4" (-04) ORFS connections (9/16-18 UNF Thread)
FS2700-06: For 3/8" (-06) ORFS connections (11/16-16 UNF Thread)
FS2700-08: For 1/2" (-08) ORFS connections (13/16-16 UNF Thread)
FS2700-10: For 5/8" (-10) ORFS connections (1-14 UNS Thread)
FS2700-12: For 3/4" (-12) ORFS connections (1-3/16-12 UN Thread)
FS2700-16: For 1" (-16) ORFS connections (1-7/16-12 UN Thread)

Note: Each bulkhead union includes a corresponding locknut (e.g., Part FS306) and O-rings for both ORFS male ends. For unlisted sizes, specific material requirements (e.g., stainless steel options), or other custom needs, please contact our sales team.

Applications

The Part FS2700 SAE ORFS Male Bulkhead Union is essential for:

Securely passing hydraulic lines through equipment walls, vehicle chassis, control panels, or machinery enclosures while maintaining a leak-proof ORFS connection on both sides.
Providing a fixed, robust connection point on a panel for hydraulic hoses or tubes terminated with female ORFS swivel fittings.
Maintaining hydraulic circuit integrity when lines need to traverse barriers, crucial in mobile equipment, industrial machinery, agricultural vehicles, and any application requiring neat and secure routing of ORFS hydraulic lines through a flat surface.
Applications where the "zero clearance" benefit of ORFS fittings is advantageous for assembly and maintenance around the bulkhead area.

Installation & Usage Guidelines

Prepare the panel or bulkhead by drilling or punching an appropriately sized hole for the threaded body of the FS2700 union.
Ensure the panel surface around the hole is clean and flat to facilitate a secure mount.
Insert the threaded body of the bulkhead union through the hole from one side.
Slide the provided locknut over the protruding threads on the other side of the panel and tighten it securely against the panel surface. Use a wrench on the fitting's hex shoulder or body flats to prevent it from turning while tightening the locknut.
Verify that the O-rings for both ORFS male ends are correctly sized, lubricated, and properly seated in their grooves without damage.
Connect the male ORFS ends of the bulkhead union to the mating female ORFS swivel fittings or prepared tube ends on each side of the panel. Hand-tighten the swivel nuts until the flat faces meet the O-rings.
Using appropriate wrenches (one to hold the bulkhead union body if necessary, and one for the swivel nut), tighten each ORFS connection to the manufacturer's recommended torque or by using the "Flats From Wrench Resistance" (FFWR) method.

Why Choose Delphi Fittings Part FS2700?

Superior Leak Prevention: The O-Ring Face Seal design on both ends provides exceptionally reliable, virtually leak-free connections, critical for high-pressure bulkhead pass-throughs.
Secure Panel Mounting: The threaded body and included locknut ensure a stable, fixed point for hydraulic lines traversing a panel or bulkhead, preventing movement and stress on connections.
Zero Clearance Assembly: Facilitates easier installation and maintenance in applications where space around the bulkhead is limited.
High-Pressure Capability: Engineered to withstand the demanding pressures common in modern hydraulic systems.
Durable Carbon Steel Construction: Manufactured from high-grade carbon steel for excellent strength and longevity.
Enhanced Corrosion Resistance: Standard zinc plating provides robust protection against rust and environmental factors.
Full Adherence to Industry Standards: Meets SAE J1453 / ISO 8434-3 specifications, ensuring compatibility and interchangeability.
Quality-Assured Manufacturing: Produced under Delphi Fittings' rigorous ISO 9001:2015 certified quality management system.

Get a Quote for Part FS2700 - SAE ORFS Male Bulkhead Union

For highly reliable, leak-free, and securely mounted through-panel connections using ORFS technology, the Part FS2700 Bulkhead Union is an industry-leading choice. Contact Delphi Fittings today for competitive wholesale pricing, bulk order information, and expert technical support.

Request a Quote Back to ORFS Fittings