FD90-1021-04-04 Eaton FD90 Series Female Socket - 1/4-18 Female NPT Diagnostic Valved Quick Disconnect Coupling - Steel

  • $31.01
Eaton's FD90 Series diagnostic coupling is designed to connect and disconnect pressure gauges to hydraulic systems, eliminating the need for permanent gauges. The maximum operating pressure is 7,000 psi. See How to Order Please reference Fluid Compatibility Chart (Both the elastomer and metal must be considered when determining suitability of combination for a coupling) SPECIFICATIONS
Applications & Markets:
  • Diagnostic pressure testing for hydraulic systems
Product Features:
  • Automatic sleeve for one hand push-to-connect operation
  • Flush face valving provides minimal fluid loss and low air inclusion
  • Self-sealing valve design allows connection and disconnection at 500 psi
  • Broad range of end configurations for system accessibility
Standard Seal Material: Buna-N
Standard Body Material: High resistance carbon steel with zinc trivalent plating
Physical Characteristics
Coupling Body Size Max. Operating Pressure Min. Burst Pressure Connected Vacuum Connected Only Rated Flow Air Inclusion Fluid Loss
(in) (bar) (psi) (bar) (psi) (in/Hg) (lpm) (gpm) (cc. max.) (cc. max.)
1/4 483 7,000 1,931 28,000 28 1.89 0.6 0.02 0.10
Dimensions FD90 Series - Female Pipe, Valved
Part Number Buna-N Part Number with Dust CapBuna-N Coupling Type Body Size Port Size Thread Type Figure Dimensions
A B Hex 1
in(mm) in(mm) in(mm)
Figure 1 Figure 2 FD90-1034-02-04 FD90-1035-02-04 Plug/Male 1/4 1/8 1/8-27 Female NPTF 1 1.70(43.2) -(-) 0.62(15.7)
FD90-1021-02-04 - Socket/Female 1/4 1/8 1/8-27 Female NPTF 2 1.95(49.5) 1.00(25.4) 0.75(19.1)
FD90-1034-04-04 FD90-1035-04-04 Plug/Male 1/4 1/4 1/4-18 Female NPTF 1 1.90(48.3) -(-) 0.75(19.1)
FD90-1021-04-04 - Socket/Female 1/4 1/4 1/4-18 Female NPTF 2 2.25(57.2) 1.00(25.4) 0.75(19.1)
Dimensions FD90 Series - Male SAE O-Ring, Valved
Part Number Buna-N Part Number with Dust CapBuna-N Coupling Type Body Size Port Size Thread Type Figure Dimensions
A B Hex 1
in(mm) in(mm) in(mm)
Figure 3 FD90-1044-03-04 FD90-1004-03-04 Plug/Male 1/4 3/8 3/8-24 Male SAE O-Ring 3 1.52(38.6) -(-) 0.62(15.7)
FD90-1044-04-04 FD90-1004-04-04 Plug/Male 1/4 7/16 7/16-20 Male SAE O-Ring 3 1.58(40.1) -(-) 0.62(15.7) FD90-1044-05-04 FD90-1004-05-04 Plug/Male 1/4 1/2 1/2-20 Male SAE O-Ring 3 1.32(33.5) -(-) 0.62(15.7) FD90-1044-06-04 FD90-1004-06-04 Plug/Male 1/4 9/16 9/16-18 Male SAE O-Ring 3 1.32(33.5) -(-) 0.69(17.5)
Dimensions FD90 Series - Male Pipe, Valved
Part Number Buna-N Part Number with Dust CapBuna-N Coupling Type Body Size Port Size Thread Type Figure Dimensions
A B Hex 1
in(mm) in(mm) in(mm)
Figure 4 FD90-1012-02-04 FD90-1045-02-04 Plug/Male 1/4 1/8 1/8-27 Male NPT 4 1.60(40.6) -(-) 0.62(15.7)
FD90-1012-04-04 FD90-1045-04-04 Plug/Male 1/4 1/4 1/4-18 Male NPT 4 1.49(37.8) -(-) 0.69(17.5)
Dimensions FD90 Series - Metric Male O-Ring, Valved
Part Number Buna-N Part Number with Dust CapBuna-N Coupling Type Body Size Port Size Thread Type Figure Dimensions
A B Hex 1
in(mm) in(mm) in(mm)
Figure 5 FD90-1046-06-04 FD90-1047-06-04 Plug/Male 1/4 M14 M14 x 1.5 Metric Male O-Ring 5 1.52(38.5) -(-) 0.75(19.1)
Dimensions FD90 Series - Female SAE O-Ring, Valved
Part Number Buna-N Part Number with Dust CapBuna-N Coupling Type Body Size Port Size Thread Type Figure Dimensions
A B Hex 1
in(mm) in(mm) in(mm)
Figure 2 FD90-1041-04-04 - Socket/Female 1/4 7/16 7/16-20 Female SAE O-Ring 2 2.20(55.9) 1.00(25.4) 0.75(0.75)
Dimensions FD90 Series - Male ORS Bulkhead, Valved
Part Number Buna-N Part Number with Dust CapBuna-N Coupling Type Body Size Port Size Thread Type Figure Dimensions
A B Hex 1
in(mm) in(mm) in(mm)
Figure 2 FD90-1206-04-04 - Plug/Male 1/4 9/16 9/16-18 Male ORS Bulkhead 6 2.46(62.5) 0.81(20.6) 0.81(20.6)
Dimensions FD90 Series - Female ORS Swivel, Valved
Part Number Buna-N Part Number with Dust CapBuna-N Coupling Type Body Size Port Size Thread Type Figure Dimensions
A B Hex 1
in(mm) in(mm) in(mm)
Figure 2 FD90-1061-04-04 - Plug/Male 1/4 9/16 9/16-18 Female ORS Swivel 7 1.79(46.5) 0.87(22.1) 0.69(17.5)
FD90-1061-06-04 - Plug/Male 1/4 11/16 11/16-16 Female ORS Swivel 7 1.83(46.5) 0.94(23.9) 0.81(20.6) FD90-1061-08-04 - Plug/Male 1/4 13/16 13/16-16 Female ORS Swivel 7 1.93(49.0) 1.08(27.4) 0.94(23.9)
Dimensions FD90 Series - Male Metric O-Ring, Valved
Part Number Buna-N Part Number with Dust CapBuna-N Coupling Type Body Size Port Size Thread Type Figure Dimensions
A B Hex 1
in(mm) in(mm) in(mm)
Figure 2 FD90-1090-10-04 - Plug/Male 1/4 M10 M10 x 1 Male Mertic O-Ring 8 1.58(40.1) 0.72(18.3) -(-)
Dimensions FD90 Series - Dust Cap for Plug/Male Halves
Part Number Body Size
FD90-1040-04 1/4