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Parker FF Series

For the complete product listing, please view Catalog 3800 - Quick Coupling Products (19.9 MB PDF).

FF Series Push-To-Connect/Sleeve Lock

Parker FF Series Push-To-Connect/Sleeve Lock

FF Series couplings eliminate spillage and air inclusion when connecting and disconnecting. The sleeve locking mechanism prevents accidental disconnection. 3/8" body size complies with Hydraulic Tool Manufacturers Association standards. FC nipples provide a connect-under-pressure option for trapped pressures up to 3000 psi on the nipple side.

Applications: Hydraulic tools, Mobile equipment, Industrial hydraulics

Features:

  • Flush, non-spill valving
  • Hardened steel sleeves and nipple bodies
  • Locking sleeve
  • Blow-out resistant seal
  • Connect-under-pressure FC nipple option
  • Protective zinc plating with clear trivalent chromate finish

FF Series Specifications

Body Size Rated Pressure Rated Flow Temperature Range Spillage (ml) Max. Air Inclusion (ml) Max Body Material Sleeve Type Seal Material
inches (psi) (gpm) per disconnect per connect
1/4 5000 3 -40º to +250ºF .015.020Steel Push to Connect Nitrile/Polyure-thane
3/8 3000 6 -40º to +250ºF .015.020Steel Push to Connect Nitrile/Polyure-thane
1/2 3000 12 -40º to +250ºF .080.070Steel Push to Connect Nitrile/Polyure-thane
3/4 3000 28 -40º to +250ºF .150.100Steel Push to Connect Nitrile/Polyure-thane
1 3000 50 -40º to +250ºF .200.150Steel Push to Connect Nitrile/Polyure-thane

FF Series Couplers

Parker FF Series Couplers
Body Size Part Number Port End Length Largest Diameter Wrench Flats Weight
inches (lbs.)
1/4 FF-251-4FP 1/4-18 NPSF 1.79 1.061.000.23
1/4 FF-251-4MP 1/4-18 NPTF 1.84 1.061.000.24
1/4 FF-251-6FO 9/16-18 UNF 1.91 1.061.000.23
3/8 FF-371-6FP 3/8-18 NPSF 2.39 1.201.060.44
3/8 FF-371-8FP 1/2-14 NPSF 2.80 1.201.060.50
3/8 FF-371-6FB G3/8 BSPP 2.45 1.201.060.45
3/8 FF-371-8FB G1/2 BSPP 2.80 1.201.060.48
3/8 FF-371-8FO 3/4-16 UNF 2.82 1.201.060.52
1/2 FF-501-8FP 1/2-14 NPSF 3.00 1.541.250.88
1/2 FF-501-10FO 7/8-14 UNF 3.00 1.541.251.05
3/4 FF-751-12FP 3/4-14 NPSF 3.50 1.941.751.84
3/4 FF-751-12FO 1 1/16-12 UNF 3.75 1.941.751.93
1 FF-1001-16FP 1-11 1/2NPSF 4.14 2.251.872.64
1 FF-1001-16FO 1 5/16-12UNF 4.24 2.251.872.68

FF Series Nipples

Parker FF Series Nipples
Body Size Part Number Port End Length Exposed Length Largest Diameter Wrench Flats Weight
inches (lbs.)
1/4 FF-252-4FP 1/4-18 NPSF 1.66 1.15 1.061.000.16
1/4 FF-252-4MP 1/4-18 NPTF 1.72 1.18 1.061.000.26
1/4 FF-252-6FO 9/16-18 UNF 1.66 1.15 1.061.000.16
3/8 FF-372-6FP 3/8-18 NPSF 2.31 1.71 1.080.940.26
3/8 FF-372-8FP 1/2-14 NPSF 2.64 2.04 1.191.060.32
3/8 FF-372-6FB G3/8 BSPP 2.45 1.86 1.080.940.28
3/8 FF-372-8FB G1/2 BSPP 2.70 2.16 1.191.060.32
3/8 FF-372-8FO 3/4-16 UNF 2.70 2.16 1.191.060.3
1/2 FF-502-8FP 1/2-14 NPSF 2.75 2.11 1.381.250.42
1/2 FF-502-10FO 7/8-14 UNF 2.75 2.07 1.381.250.44
3/4 FF-752-12FP 3/4-14 NPSF 3.38 2.47 1.731.501.00
3/4 FF-752-12FO 1 1/16-12 UNF 3.58 2.47 1.731.501.02
1 FF-1002-16FP 1-11 1/2 NPSF 3.85 2.60 2.171.871.60
1 FF-1002-16FO 1 5/16-12UNF 3.85 2.60 2.171.871.70