297 SERIES, FLAT FACE COUPLING (CARBON STEEL), ISO-16028 STANDARD,
CONNECT UNDER PRESSURE FEMALE, COUPLER, THREADED COUPLING

 
 
   
Art. No. Body Size E Hs Hq Ls T
HHFSFC29738-3/8"NPT 3/8" 41.8 30 38 70 3/8"NPT
HHFSFC9738-3/8"BSP 3/8" 41.8 30 38 70 3/8"BSPP
HHFSFC29738-1/2"NPT 3/8" 41.8 30 38 71.5 1/2"NPT
HHFSFC29738-1/2"BSP 3/8" 41.8 30 38 71.5 1/2"BSPP
HHFSFC29712-1/2"NPT 1/2" 49.8 36 46 78 1/2"NPT
HHFSFC29712-1/2"BSP 1/2" 49.8 36 46 78 1/2"BSPP
HHFSFC29712-3/4"NPT 1/2" 49.8 36 46 85 3/4"NPT
HHFSFC29712-3/4"BSP 1/2" 49.8 36 46 85 3/4"BSPP
HHFSFC29712-1-1/16"UNF 1/2" 49.8 36 46 85 1-1/16"UNF-12
HHFSFC29758-3/4"NPT 5/8" 53.8 41 50 85 5/8"NPT
HHFSFC29758-1-1/16"UNF 5/8" 53.8 41 50 85 1-1/16"UNF-12
HHFSFC29734-3/4"NPT 3/4" 58.8 46 55 97 3/4"NPT
HHFSFC29734-3/4"BSP 3/4" 58.8 46 55 97 3/4"BSPP
HHFSFC29734-1"NPT 3/4" 58.8 46 55 99 1"NPT
HHFSFC29734-1"BSP 3/4" 58.8 46 55 99 1"BSPP
HHFSFC29734-1-1/16"UNF 3/4" 58.8 46 55 99 1-1/16"UNF-12
HHFSFC29734-G3/4" JIS ORB 3/4" 58.8 46 55 99 G3/4" JIS ORB
HHFSFC29710-1"NPT 1" 70 55 65 105 1"NPT
HHFSFC29710-1"BSP 1" 70 55 65 105 1"BSPP
HHFSFC29710-1-1/4"NPT 1" 70 55 65 106 1-1/4"NPT
HHFSFC29710-1-1/4"BSP 1" 70 55 65 106 1-1/4"BSPP
HHFSFC29710-1-5/16"UNF 1" 70 55 65 105 1-5/16"UNF-12
HHFSFC29710-G1" JIS ORB 1" 70 55 65 106 G1" JIS ORB
HHFSFC297112-1-1/4"BSP 1-1/2" 92 65 85 133.5 1-1/4"BSPP
HHFSFC297112-1-1/4"NPT 1-1/2" 92 65 85 133.5 1-1/4"NPT
HHFSFC297112-1-1/2"NPT 1-1/2" 92 65 85 133.5 1-1/2"NPT
HHFSFC297112-1-1/2"BSP 1-1/2" 92 65 85 133.5 1-1/2"BSPP
HHFSFC297112-1-5/8"UNF 1-1/2" 92 65 85 133.5 1-5/8"UNF-12
HHFSFC297112-1-7/8"UNF 1-1/2" 92 65 85 133.5 1-7/8"UNF-12
HHFSFC297112-G1-1/2" JIS ORB 1-1/2" 92 65 85 133.5 G1-1/2" JIS ORB
 

APPLICATIONS:

297 series is the ultimate solution and most popular for hydraulic circuit applications subject to high pressure impulses, and circuits which experience high residual or
trapped pressure in a line. Thread-to-connect design eliminates premature wear or brinelling associated with locking ball designs subjected to high impulse pressures.
The internal valve allows connection and disconnection with high residual pressures. Flat face design avoids loss of hydraulic fluid during connection/ disconnection.
Flat face design is easly to clean, limiting contamination into the circuit.
- High working pressures: 40-60 MPa/5800-8700 psi range based on size.
- Thread coupling system eliminates brinelling, premature leakage.
- Connect/disconnect under residual pressure up to 25 MPa/3625 psi.
- Valve limits fluid movement during connection avoiding damage to other elements of circuit.
- Low connection force required.
- Excavators w/auxiliary line for attachments: thumbs, grapples, hammers, and compactors/hopaks.
- Oil Field, well head drives, porta-power.
- Cranes, drilling machines, all large equipment needing junction points in circuit.
- All construction equipment applications with higher pressure
requirements or issues of connecting/ disconnecting tool attachments under residual pressure.
- Eliminates brinelling, reduces leakage.
- Save time changing tools.

INTERCHANGE

STUCCHI VEP SERIES, PARKER FET SERIES,
FASTER FHV SERIES,DNP PST4 SERIES,
VOSWINKEL FT SERIES,DIXON VEP SERIES,
HOLMBURY HFT SERIES,

THREADS

Threads:ISO1179-1,ANSI B1.20.1,ISO11926-1& SAE J1926-1
                SAE J1453 or ISO8343-3

PERFORMANCE
 
 
 

TEMPERATURE RANGE

-20oC+100oC/-4oF+212oF
With standard seals: Buna-N(Nitrile)
-20oC+200oC/-4oF+392oF
With standard seals: Viton
On request seals: Viton, Neoprene, EPDM or other seals.

 
Size Max.residual pressure during connection Max.residual pressure
Male,female to drain Female,male to drain Male and female  during disconnection
Inch Mpa psi Mpa psi Mpa psi Mpa psi
1/4 30 4350 30 4350 25 3625 25 3625
3/8 25 3625 25 3625 25 3625 25 3625
1/2 25 3625 25 3625 20 2900 20 2900
5/8 25 3625 25 3625 20 2900 20 2900
3/4 25 3625 25 3625 15 2175 15 2175
1 25 3625 25 3625 15 2175 15 2175
1-1/2 25 3625 25 3625 5 725 5 725
Size Max.operating pressure Burst pressure
Coupled Male FeMale Coupled Male FeMale
Inch Mpa psi Mpa psi Mpa psi Mpa psi Mpa psi Mpa psi
1/4 60 8700 60 8700 42 6090 150 21750 150 21750 126 18270
3/8 55 7975 55 7975 33 4785 140 20300 140 20300 100 14500
1/2 55 7975 55 7975 33 4785 140 20300 140 20300 100 14500
5/8 55 7975 55 7975 33 4785 140 20300 140 20300 100 14550
3/4 50 7250 50 7250 33 4785 125 18125 125 18125 100 14500
1 47 6815 47 6815 30 4350 120 17400 120 17400 80 11600
1-1/2 40 5800 40 5800 30 4350 110 15950 110 15950 80 11600
 
 
 

MATERIAL

Coupler Body :STEEL, TRIVALENT PLATED
Springs :C98
Balls :GCr15
Seals :Buna-N(Nitrile)
Back-Up Ring :PTFE
Surface treatment :1)QPQ finish,then Zinc plating and Cr 3+
                                   2)Zinc Nickel plating1200 hours with no
                                       red rust in salt spray tests

ATTENTION:

Only coupler and nipple with the same thread fit together. Threads: BSP, NPT, SAE, ORFS, JIC

 

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