Eaton FD90 — SAE J1502 Diagnostic Test-Point Coupler

The Eaton FD90 — SAE J1502 Diagnostic Test-Point Coupler is a diagnostic quick-disconnect coupling from Eaton's Aeroquip range. SAE J1502 diagnostic test-point coupler — connect/disconnect a pressure gauge to a hydraulic system at up to 500 psi without shutdown. 7,000 psi working pressure, flush-face self-sealing.

Working pressure to 483 bar (7005 psi) at the smallest body size, with minimum burst pressure of 1931 bar. Push-to-Connect connection — flush face (no-spill) variant.

Construction & features

• Interchange standard: SAE J1502
• Connection method: Push-to-Connect
• Valving: Flush Face (No-Spill)
• Flush-face / no-spill design — minimal fluid loss and air inclusion at disconnect
• Connect-under-pressure capability — couplings can be mated against trapped residual pressure
• SAE J1502 diagnostic-coupler standard
• Push-to-connect for one-hand operation
• Flush-face self-sealing valve — minimal fluid loss
• Connect/disconnect at 500 psi line pressure
• 7,000 psi (483 bar) maximum working pressure
• Wide range of port end configurations: NPT, SAE O-ring, Metric O-ring, ORS Bulkhead/Swivel
• Eliminates the need for permanent gauges
• Interchanges with: Parker test-point couplers (SAE J1502), Bosch Rexroth diagnostic couplers, Hydrotechnik test-points, MiniMess

Available variants — specify in your RFQ

Indus quotes the full FD90 range; specify the configuration that matches your hose end and operating envelope. The Eaton part-number scheme is FD90-XXXX-AA-BB (series, half/material code, port thread size in 16ths of an inch, nominal coupling size in 16ths of an inch).

• Coupling halves: Male, Female, Dust Cap (sold separately or with male)
• Body sizes: 1/4" coupling size; multiple port sizes (1/8" to 13/16")
• Body materials: Carbon Steel (zinc trivalent chromate plated)
• Seal materials: Buna-N
• Port thread types: Female NPT, Male SAE O-ring (3/8-24, 7/16-20, 1/2-20, 9/16-18), Male Metric O-ring (M10x1, M14x1.5), Male ORS Bulkhead, Female ORS Swivel

Sample part numbers: FD90-1021-04-04, FD90-1034-04-04, FD90-1041-09-04, FD90-1044-04-04, FD90-1046-06-04, FD90-1061-06-04, FD90-1090-10-04, FD90-1206-04-04, FD90-1040-04-04. The full part-number matrix is available on request — Indus will quote any standard configuration in the Eaton catalogue.

Performance

• Maximum operating pressure: 483 bar (7005 psi) at the smallest size; derates with diameter
• Minimum burst pressure: 1931 bar (28007 psi)
• Rated flow (largest size): up to 1.89 L/min
• Vacuum rating: 28 in./Hg
• Operating temperature range: -40°C to +100°C (varies by seal compound; specify in RFQ)

Applications

• Hydraulic system pressure diagnostics
• Permanent test-point installation in service-prone hydraulic circuits
• Mobile equipment pressure-survey field service
• Industrial hydraulic system commissioning

How to order

Confirm (a) the exact Eaton part number you require, or (b) the configuration parameters: coupling half (male / female / complete set / repair kit / dust cap), body size, port thread type and designation, seal compound, body material. Indus will quote ex-Eaton with full mill certification, NACE / ABS / Lloyd's options on request, and air-freight or sea-freight options to UAE / GCC. Standard lead time 14 days from order; in-stock items ship same week.

Companion products

Indus also stocks the matching dust caps, dust plugs, and seal repair kits for this series — ask for them on the same RFQ. For hose assemblies terminated with this coupler, request a complete hose-end assembly quote and we will supply the assembly tested at 1.5× working pressure with witness-test certificate.