Hofmann Fluid Power Inc.

Serving the Fluid Power Industry Since 1950

Flush Face Series

1/8″ – 1-1/2″ Body Size

Interchange ISO 16028
Series FF are high-pressure couplings made out of plated steel and utilize a flush faced valving system to prevent leakage upon disconnection. They are fully interchangeable with ISO 16028 and 316SS and incorporate a sleeve locking mechanism to prevent accidental disconnection. Buna seals are standard with steel couplers and viton seals are standard in the 316 stainless steel – all come with teflon back up rings.


Click on any of the part numbers to request a quote.

Sockets

 Part #Body
Size
Thread
Size [A]
O.A.L
[B]
Max O.D.
[C]
Hex
[D]
Working PressureBurst
Pressure
Weight Lbs.
seriesff-1FF2HS1/4"1/4"-18 NPTF1.98"1.11"7/8"5,00020,0000.23
FF3HS3/8"3/8"-18 NPTF2.50"1.24"1"5,00020,0000.44
FF34HS3/8"1/2"-14 NPTF2.72"1.24"1-1/8"5,00020,0000.48
FF4HS1/2"1/2"-14 NPTF3.02"1.54"1-3/16"5,00020,0000.86
FF46HS1/2"3/4"-14 NPTF3.22"1.54"1-5/16"5,00020,0000.98
FF7HS5/8"3/4"-14 NPTF3.32"1.67"1-1/2"5,00020,0001.51
FF6HS3/4"3/4"-14 NPTF3.70"1.85"1-1/2"5,00020,0001.82
FF68HS3/4"1" -11 1/2 NPTF3.82"1.92"1-3/4"5,00020,0002.06
FF8HS1"1" -11 1/2 NPTF4.24"2.29"1-3/4"5,00020,0002.67
FF810HS1"1-1/4"-11 1/2 NPTF4.34"2.29"2"5,00020,0002.75

 Part #Body
Size
Thread
Size [A]
O.A.L
[B]
Max O.D.
[C]
Hex
[D]
Working PressureBurst
Pressure
Weight Lbs.
seriesff-1FF2HS-G1/4"1/4"-19 BSPP1.98"1.11"7/8"5,00020,0000.23
FF3HS-G3/8"3/8"-19 BSPP2.50"1.24"1"5,00020,0000.44
FF34HS-G3/8"1/2"-14 BSPP2.72"1.24"1-1/8"5,00020,0000.48
FF4HS-G1/2"1/2"-14 BSPP3.02"1.54"1-3/16"5,00020,0000.86
FF46HS-G1/2"3/4"-14 BSPP3.22"1.54"1-5/16"5,00020,0000.98
FF7HS-G5/8"3/4"-14 BSPP3.32"1.67"1-1/2"5,00020,0001.51
FF6HS-G3/4"3/4"-14 BSPP3.70"1.85"1-1/2"5,00020,0001.82
FF68HS-G3/4"1"-11 BSPP3.82"1.92"1-3/4"5,00020,0002.06
FF8HS-G1"1"-11 BSPP4.24"2.29"1-3/4"5,00020,0002.67
FF810HS-G1"1-1/4"-11 BSPP4.29"2.29"2"5,00020,0002.75

 Part #Body
Size
Thread
Size [A]
O.A.L
[B]
Max O.D.
[C]
Hex
[D]
Working PressureBurst
Pressure
Weight Lbs.
seriesff-1FF23HS-ORB1/4"9/16"-18 ORB1.98"1.11"7/8"5,00020,0000.23
FF3HS-ORB3/8"9/16"-18 ORB2.50"1.24"1"5,00020,0000.49
FF34HS-ORB3/8"3/4"-16 ORB2.72"1.24"1-1/8"5,00020,0000.53
FF4HS-ORB1/2"3/4"-16 ORB3.02"1.54"1-3/16"5,00020,0000.86
FF45HS-ORB1/2"7/8"-14 ORB3.12"1.54"1-5/16"5,00020,0000.92
FF46HS-ORB1/2"1-1/16"-12 ORB3.22"1.54"1-5/16"5,00020,0000.96
FF75HS-ORB5/8"7/8"-14 ORB3.32"1.67"1-1/2"5,00020,0001.58
FF76HS-ORB5/8"1-1/16"-12 ORB3.32"1.67"1-1/2"5,00020,0001.49
FF65HS-ORB3/4"7/8"-14 ORB3.70"1.85"1-1/2"5,00020,0001.82
FF6HS-ORB3/4"1-1/16"-12 ORB3.70"1.85"1-1/2"5,00020,0001.91
FF68HS-ORB3/4"1-5/16"-12 ORB3.82"1.92"1-3/4"5,00020,0002.16
FF8HS-ORB1"1-5/16"-12 ORB4.24"2.29"1-3/4"5,00020,0002.67
FF810HS-ORB1"1-5/8"-12 ORB4.24"2.29"2"5,00020,0002.84

 Part #Body Size x
Thread FNPT
O.A.L [A]Max O.D. [B]Hex [C]Working PressureBurst PressureWeight Lbs.
FF3HS-S63/8" x 3/8"2.50"1.24"1"3,50017,5000.44
FF34HS-S63/8" x 1/2"2.72"1.24"1-1/8"3,50017,5000.48
FF4HS-S61/2" x 1/2"3.02"1.54"1-3/16"3,40017,5000.86
FF46HS-S61/2" x 3/4"3.22"1.54"1-5/16"3,40017,5000.98
FF7HS-S65/8" x 3/4"3.32"1.67"1-1/2"2,92014,6001.51
FF6HS-S63/4" x 3/4"3.70"1.85"1-1/2"2,92014,6001.82
FF68HS-S63/4" x 1"3.82"1.92"1-3/4"2,92014,6002.06
FF8HS-S61" x 1"4.24"2.29"1-3/4"2,92014,6002.67
FF810HS-S61" x 1 1/4"4.34"2.29"2"2,92014,6002.75

 Part #Body Size x
Thread FNPT
O.A.L [A]Max O.D. [B]Hex [C]Working PressureBurst PressureWeight Lbs.
FF3HS-G-S63/8" x 3/8"2.50"1.24"1"3,50017,5000.44
FF34HS-G-S63/8" x 1/2"2.72"1.24"1-1/8"3,50017,5000.48
FF4HS-G-S61/2" x 1/2"3.02"1.54"1-3/16"3,40017,5000.86
FF46HS-G-S61/2" x 3/4"3.22"1.54"1-5/16"3,40017,5000.98
FF7HS-G-S65/8" x 3/4"3.32"1.67"1-1/2"2,92014,6001.51
FF6HS-G-S63/4" x 3/4"3.70"1.85"1-1/2"2,92014,6001.82
FF68HS-G-S63/4" x 1"3.82"1.92"1-13/4"2,92014,6002.06
FF8HS-G-S61" x 1"4.24"2.29"1-3/4"2,92014,6002.67
FF810HS-G-S61" x 1 1/4"4.29"2.29"2"2,92014,6002.75

 Part #MaterialsColorWeight Lbs.
nitrile-blackFF3DPMNITRILEBLACK0.05
FF4DPMNITRILEBLACK0.06
FF6DPMNITRILEBLACK0.07
FF7DPMNITRILEBLACK0.07
FF8DPMNITRILEBLACK0.15

FNPTF
 Part #Body SizeThread Size [A]O.A.L [B]Max O.D. [C]Hex [D]Working PressureBurst PressureWeight Lbs.
FFS71-2-S61/4"1/4" NPTF1.96"1.23"15/16"5,00028,0000.26
FFS71-3-S63/8"3/8" NPTF2.36"1.6"1-3/16"5,00028,0000.38
FFS71-3-4-S63/8"1/2" NPTF2.36"1.6"1-3/16"5,00028,0000.38
FFS71-4-S61/2"1/2" NPTF2.77"1.98"1-1/2"5,00025,0000.49
FFS71-6-S63/4"3/4" NPTF3.03"2.35"1-3/4"5,00022,8002.05
FFS71-8-S61"1" NPTF3.33"1.55"2"4,00018,5002.83
FFS71-8-10-S61"1-1/4 NPTF3.67"2.73"2"4,00018,5002.83
FFS71-16-S62"2" NPTF6.20"4.47"3.78"3,00010,0008.74

FBSPP
 Part #Body SizeThread Size [A]O.A.L [B]Max O.D. [C]Hex [D]Working PressureBurst PressureWeight Lbs.
FFS71-2-G-S61/4"1/4" BSPP1.96"1.23"15/16"5,00028,0000.26
FFS71-3-G-S63/8"3/8" BSPP2.36"1.6"1-3/16"5,00028,0000.38
FFS71-3-4-G-S63/8"1/2" BSPP2.36"1.6"1-3/16"5,00028,0000.38
FFS71-4-G-S61/2"1/2" BSPP2.77"1.98"1-1/2"5,00025,0000.49
FFS71-6-G-S63/4"3/4" BSPP3.03"2.35"1-3/4"5,00022,8002.05
FFS71-8-G-S61"1" BSPP3.33"2.73"2"4,00018,5002.83
FFS71-8-10-S61"1-1/4 NPTF3.67"2.73"2"4,00018,5002.83
FFS71-8-10-G-S61"1-1/4" BSPP3.67"2.73"2"4,00018,5002.83

Plugs

 Part #Body
Size
Thread
Size [A]
O.A.L
[B]
Max O.D.
[C]
Hex
[D]
Working PressureBurst
Pressure
Weight Lbs.
seriesff-plugFF2HP1/4"1/4"-18 NPTF1.89".97"7/8"5,00020,0000.16
FF3HP3/8"3/8"-18 NPTF2.48"1.10"1"5,00020,0000.27
FF34HP3/8"1/2"-14 NPTF2.70"1.24"1-1/8"5,00020,0000.31
FF4HP1/2"1/2"-14 NPTF2.63"1.31"1-3/16"5,00020,0000.42
FF46HP1/2"3/4"-14 NPTF2.73"1.44"1-5/16"5,00020,0000.53
FF7HP5/8"3/4"-14 NPTF2.88"1.65"1-1/2"5,00020,0000.95
FF6HP3/4"3/4"-14 NPTF3.42"1.65"1-1/2"5,00020,0001
FF68HP3/4"1" -11 1/2 NPTF3.54"1.92"1-3/4"5,00020,0001.15
FF8HP1"1" -11 1/2 NPTF3.50"1.96"1-3/4"5,00020,0001.69
FF810HP1"1-1/4"-11 1/2 NPTF3.61"2.19"2"5,00020,0001.84

 Part #Body
Size
Thread
Size [A]
O.A.L
[B]
Max O.D.
[C]
Hex
[D]
Working PressureBurst
Pressure
Weight Lbs.
seriesff-plugFF2HP-G1/4"1/4"-19 BSPP1.89".97"7/8"5,00020,0000.16
FF3HP-G3/8"3/8"-19 BSPP2.48"1.10"1"5,00020,0000.27
FF34HP-G3/8"1/2"-14 BSPP2.70"1.24"1-1/8"5,00020,0000.31
FF4HP-G1/2"1/2"-14 BSPP2.63"1.31"1-3/16"5,00020,0000.42
FF46HP-G1/2"3/4"-14 BSPP2.83"1.44"1-5/16"5,00020,0000.53
FF7HP-G5/8"3/4"-14 BSPP2.88"1.65"1-1/2"5,00020,0000.95
FF6HP-G3/4"3/4"-14 BSPP3.42"1.65"1-1/2"5,00020,0001
FF68HP-G3/4"1"-11 BSPP3.54"1.92"1-3/4"5,00020,0001.15
FF8HP-G1"1"-11 BSPP3.50"1.96"1-3/4"5,00020,0001.69
FF810HP-G1"1-1/4"-11 BSPP3.55"2.19"2"5,00020,0001.84

 Part #Body
Size
Thread
Size [A]
O.A.L
[B]
Max O.D.
[C]
Hex
[D]
Working PressureBurst
Pressure
Weight Lbs.
seriesff-plugFF23HP-ORB1/4"9/16"-18 ORB1.89".97"7/8"5,00020,0000.16
FF3HP-ORB3/8"9/16"-18 ORB2.48"1.10"1"5,00020,0000.34
FF34HP-ORB3/8"3/4"-16 ORB2.70"1.24"1-1/8"5,00020,0000.35
FF4HP-ORB1/2"3/4"-16 ORB2.63"1.31"1-3/16"5,00020,0000.4
FF45HP-ORB1/2"7/8"-14 ORB2.63"1.31"1-5/16"5,00020,0000.43
FF46HP-ORB1/2"1-1/16"-12 ORB3.03"1.44"1-5/16"5,00020,0000.58
FF75HP-ORB5/8"7/8"-14 ORB2.88"1.65"1-1/2"5,00020,0000.9
FF76HP-ORB5/8"1-1/16"-12 ORB2.88"1.65"1-1/2"5,00020,0001.02
FF65HP-ORB3/4"7/8"-14 ORB3.42"1.65"1-1/2"5,00020,0001
FF6HP-ORB3/4"1-1/16"-12 ORB3.42"1.65"1-1/2"5,00020,0001.02
FF68HP-ORB3/4"1-5/16"-12 ORB3.54"1.92"1-3/4"5,00020,0001.12
FF8HP-ORB1"1-5/16"-12 ORB3.50"1.96"1-3/4"5,00020,0001.65
FF810HP-ORB1"1-5/8"-12 ORB3.51"2.19"2"5,00020,0001.93

 Part #Body Size x
Thread FNPT
O.A.L [A]Max O.D. [B]Hex [C]Working PressureBurst PressureWeight Lbs.
FF3HP-S63/8" x 3/8"2.48"1.10"1"3,50017,5000.27
FF34HP-S63/8" x 1/2"2.70"1.24"1-1/8"3,50017,5000.31
FF4HP-S61/2" x 1/2"2.63"1.31"1-3/16"3,40017,5000.42
FF46HP-S61/2" x 3/4"2.83"1.44"1-5/16"3,40017,5000.53
FF7HP-S65/8" x 3/4"2.88"1.65"1-1/25"2,92014,6000.95
FF6HP-S63/4" x 3/4"3.42"1.65"1-1/2"2,92014,6001
FF68HP-S63/4" x 1"3.54"1.92"1-3/4"2,92014,6001.15
FF8HP-S61" x 1"3.50"1.96"1-3/4"2,92014,6001.69
FF810HP-S61" x 1 1/4"3.61"2.19"2"2,92014,6001.84

 Part #Body Size x
Thread FNPT
O.A.L [A]Max O.D. [B]Hex [C]Working PressureBurst PressureWeight Lbs.
FF3HP-G-S63/8" x 3/8"2.48"1.10"1"3,50017,5000.27
FF34HP-G-S63/8" x 1/2"2.70"1.24"1-1/8"3,50017,5000.31
FF4HP-G-S61/2" x 1/2"2.63"1.31"1-3/16"3,40017,5000.42
FF46HP-G-S61/2" x 3/4"2.83"1.44"1-5/16"3,40017,5000.53
FF7HP-G-S65/8" x 3/4"2.88"1.65"1-1/2"2,92014,6000.95
FF6HP-G-S63/4" x 3/4"3.42"1.65"1-1/2"2,92014,6001
FF68HP-G-S63/4" x 1"3.54"1.92"1-3/4"2,92014,6001.15
FF8HP-G-S61" x 1"3.50"1.96"1-3/4"2,92014,6001.69
FF810HP-G-S61" x 1 1/4"3.55"2.19"2"2,92014,6001.84

 Part #MaterialsColorWeight Lbs.
nitrile-blackFF3DCMNITRILEBLACK0.04
FF4DCMNITRILEBLACK0.04
FF6DCMNITRILEBLACK0.06
FF7DCMNITRILEBLACK0.06
FF8DCMNITRILEBLACK0.1

 Part #Body SizeThread Size [A]O.A.L [B]Max O.D. [C]Hex [D]Working PressureBurst PressureWeight Lbs.
FFP71-2-S61/4"1/4" NPTF1.84"0.9"13/16"5,00028,0001.16
FFP71-3-S63/8"3/8" NPTF2.32"1.48"1"5,00028,0000.26
FFP71-3-4-S63/8"1/2" NPTF2.32"1.48"1"5,00028,0000.26
FFP71-4-S61/2"1/2" NPTF2.37"1.65"1-1/2"5,00025,0000.42
FFP71-6-S63/4"3/4" NPTF2.96"1.92"1-3/4"5,00022,8001.14
FFP71-8-S61"1" NPTF3.22"2.1"1-7/8"4,00018,5001.56
FFP71-8-10-S61"1-1/4 NPTF3.48"2.2"2"4,00018,5001.69
FFP71-16-S62"2" NPTF4.5"3.48"3-1/4"3,00010,0004.16

 Part #Body SizeThread Size [A]O.A.L [B]Max O.D. [C]Hex [D]Working PressureBurst PressureWeight Lbs.
FFP71-2-G-S61/4"1/4" BSPP1.84"0.9"13/16"5,00028,0000.16
FFP71-3-G-S63/8"3/8" BSPP2.32"1.48"1"5,00028,0000.26
FFP71-3-4-G-S63/8"1/2" BSPP2.32"1.48"1"5,00028,0000.26
FFP71-4-G-S61/2"1/2" BSPP2.37"1.65"1-1/2"5,00025,0000.42
FFP71-6-G-S63/4"3/4" BSPP2.96"1.92"1-3/4"5,00022,8001.14
FFP71-8-G-S61"1" BSPP3.22"2.1"1-7/8"4,00018,5001.56
FFP71-8-10-G-S61"1-1/4" BSPP3.48"2.2"2"4,00018,5001.69