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Home / All / Skid Steer Hydraulic Couplers / EH 297 Series - VEP ISO 16028 Threaded Flat Face Quick Coupler (Steel)

EH 297 Series - VEP ISO 16028 Threaded Flat Face Quick Coupler (Steel)

EH 297 Series - VEP ISO 16028 Threaded Flat Face Quick Coupler (Steel)
EH 297 Series - VEP ISO 16028 Threaded Flat Face Quick Coupler (Steel)EH 297 Series - VEP ISO 16028 Threaded Flat Face Quick Coupler (Steel)EH 297 Series - VEP ISO 16028 Threaded Flat Face Quick Coupler (Steel)
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CategoriesSkid Steer Hydraulic Couplers
Trademark/BrandEH
InterchangeSTUCCHI VEP-P SERIES
InterchangePARKER FET SERIES
InterchangeFASTER FHV SERIES
InterchangeDNP PST4 SERIES
InterchangeVOSWINKEL FT SERIES
InterchangeDIXON VEP SERIES
InterchangeHOLMBURY HFT SERIES
Update TimeDec 16,2025
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Detail Information
Items
Specs
Applications

297 Series 

Threaded Flat Face Coupling (Steel)

ISO-16028 Standard, Connect Under Pressure

This EH series is interchangeable with STUCCHI VEP-P SERIES, PARKER FET SERIES, FASTER FHV SERIES, DNP PST4 SERIES, VOSWINKEL FT SERIES, DIXON VEP SERIES, and HOLMBURY HFT SERIES. Engineered for demanding hydraulic systems, the 297 Series provides reliable performance in applications subject to extreme pressure impulses and residual line pressures. The innovative thread-to-connect design significantly reduces wear and prevents brinelling, while the internal valve technology enables safe connection and disconnection even under high residual pressure conditions.

Female


Threaded flat coupling female thread
Other Threads/Fitting Ends Are Available Upon Request
Art. No.
Body Size (inch)
E(mm)
Hs(mm)
Hq(mm)
Ls(mm)
T
HFSFC29738
-3/8"NPT
3/8''
41.8
S30
S38
70
3/8"NPT
HFSFC29738
-3/8"G
3/8''
41.8
S30
S38
70
3/8"BSPP
HFSFC29738
-1/2"NPT
3/8''
41.8
S30
S38
71.5
1/2"NPT
HFSFC29738
-1/2"G
3/8''
41.8
S30
S38
71.5
1/2"BSPP
HFSFC29712
-1/2"NPT
1/2''
49.8
S36
S46
78
1/2"NPT
HFSFC29712
-1/2"G
1/2''
49.8
S36
S46
78
1/2"BSPP
HFSFC29712-1-
1/16"
UN
1/2''
49.8
S36
S46
85
1-1/16"UN-12
HFSFC29758-
3/4"NPT
5/8''
53.8
S41
S50
85
5/8"NPT
HFSFC29758-1-
1/16"
UN
5/8''
53.8
S41
S50
85
1-1/16"UN-12
HFSFC29734-
1"NPT
3/4''
58.8
S46
S55
99
1"NPT
HFSFC29734-1"G
3/4''
58.8
S46
S55
99
1"BSPP
HFSFC29734-1-
1/16"
UN
3/4''
58.8
S46
S55
99
1-1/16"UN-12
HFSFC29734-1-
5/16"
UN
3/4''
58.8
S46
S55
99
1-5/16"UN-12
HFSFC29710-1-
1/4"
NPT
1''
70
S55
S65
106
1-1/4"NPT
HFSFC29710-1-
1/4"G
1''
70
S55
S65
106
1-1/4"BSPP
HFSFC29710-1-
5/16"
UN
1''
70
S55
S65
105
1-5/16"UN-12
HFSFC29710-1-
5/8"
UN
1''
70
S55
S65
106
1-5/8"UN-12
HFSFC297112-1-
1/2" NPT
1-1/2''
92
S65
S85
133.5
1-1/2"NPT
HFSFC297112-1-
1/2"G
1-1/2''
92
S65
S85
133.5
1-1/2"BSPP
HFSFC297112-1-
5/8"
UN
1-1/2''
92

S65

S85
133.5
1-5/8"UN-12
HFSFC297112-1-
7/8"
UN
1-1/2''
92

S65

S85
133.5
1-7/8"UN -12

Male


Threaded Flat Face Coupling male
Other Threads/Fitting Ends Are Available Upon Request
Art. No.
Body Size (inch)
N
M(mm)
Hp(mm)
Lp(mm)
T
HFSFP29738
-3/8"NPT
3/8''
M33x2
37.8
27
82.5
3/8"NPT
HFSFP29738-3/8"G
3/8''
M33x2
37.8
27
82.5
3/8"BSPP
HFSFP29738
-1/2"NPT
3/8''
M33x2
37.8
27
86
1/2"NPT
HFSFP29738
-1/2"G
3/8''
M33x2
37.8
27
86
1/2"BSPP
HFSFP29712
-1/2"NPT
1/2''
M40x3
45.8
36
97
1/2"NPT
HFSFP29712-1/2"G
1/2''
M40x3
45.8
36
97
1/2"BSPP
HFSFP29712
-1-1/16"
UN
1/2''
M40x3
45.8
36
99
1-1/16"UN-12
HFSFP29758
-3/4"NPT
5/8''
M45x3
49.8
36
99
5/8"NPT
HFSFP29758
-1-1/16"
UN
5/8''
M45x3
49.8
36
99
1-1/16"UN-12
HFSFP29734
-1"NPT
3/4''
M50x3
54.8
46
114
1"NPT
HFSFP29734-1"G
3/4''
M50x3
54.8
46
114
1"BSPP
HFSFP29734
-1-1/16"
UN
3/4''
M50x3
54.8
46
114
1-1/16"UN-12
HFSFP29734
-1-5/16"
UN
3/4''
M50x3
54.8
46
114
1-5/16"UN-12
HFSFP29710
-1-1/4"
NPT
1''
M58x3
64.5
55
123.5
1-1/4"NPT
HFSFP29710
-1-1/4"G
1''
M58x3
64.5
55
123.5
1-1/4"BSPP
HFSFP29710
-1-5/16"
UN
1''
M58x3
64.5
55
123.5
1-5/16"UN-12
HFSFP29710
-1-5/8"
UN
1''
M58x3
64.5
55
123.5
1-5/8"UN-12
HFSFP297112
-1-1/2" NPT
1-1/2''
M80x4
89.8
65
150
1-1/2"NPT
HFSFP297112
-1-1/2"G
1-1/2''
M80x4
89.8
65
150
1-1/2"BSPP
HFSFP297112
-1-5/8"
UN
1-1/2''
M80x4

89.8

65
150
1-5/8"UN-12
HFSFP297112
-1-7/8"
UN
1-1/2''
M80x4

89.8

65
150
1-7/8"UN-12

Accessories


Threaded Flat Face Coupling
Dash Size
ISO Size
Art. No. 
Dust Cap For Coupler
Art. No.
Dust Cap For Plug
Material
06
10
297-3/8-P-AL
297-3/8-C-AL
Aluminum
08
12.5
297-1/2-P-AL
297-1/2-C-AL
Aluminum
10
16
297-5/8-P-AL
297-5/8-C-AL
Aluminum
12
19
297-3/4-P-AL
297-3/4-C-AL
Aluminum
16
25
297-1-P-AL
297-1-C-AL
Aluminum
24
38
297-1-1/2-P-AL
297-1-1/2-C-AL
Aluminum

Technical Specifications

Dash Size
Body Size (Inch)
Max. Work PressureMale (bar)
Max. Work PressureFemale (bar)
Max. Work PressureCoupled (bar)
Min. Burst 
Pressure
Male
(bar)
Min. Burst 
Pressure
Female
(bar)
Min. Burst 
Pressure
Coupled
(bar)
Spillage
(ml)
06
3/8''
550
330
550
1400
1000
1400
0.01
08
1/2''
550
330
550
1400
1000
1400
0.01
10
5/8''
550
330
550
1400
1000
1400
0.02
12
3/4''
500
330
500
1250
1000
1250
0.03
16
1''
470
300
470
1200
800
1200
0.03
20
1-1/4''
400
300
400
1100
800
1100
0.03
Material:
Steel
Seals:
NBR, Seals can be customized to meet your special work condition/media
Working Temperatures:
-25 °C to 125 °C, Customizable
Surface Treatment:
MATE 1000 (ZnNi)
Specifications:
Series Interchange:
STUCCHI VEP-P SERIES, 
PARKER FET SERIES, FASTER FHV SERIES, DNP PST4 SERIES, VOSWINKEL FT SERIES, DIXON VEP SERIES, HOLMBURY HFT SERIES
Valve Type:
Flat
Connection:
Screw to Connect
Disconnection:
Unscrew to Disconnect
Connection Under Pressure:
Allowed Up To Work Pressure

Pressure Drop

Pressure Drop

Applications

Oil platform Maintain equipment applications

Oil Platforms 
Maintenance Equipment

Oil platform Maintain equipment applications
Crawler Cranes

Oil platform Maintain equipment applications

Hydraulic Undercarriage

Oil platform Maintain equipment applications

Demolition Excavators

Oil platform Maintain equipment applications

Hydromill Trench Cutters

Coiled Tubing Units applications

Coiled Tubing Units

Manufacture Of Precast Concrete Components Into Molds
Manufacture Of Precast Concrete Components Into Molds

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NINGBO E.H HYDRAULIC CO., LTD.
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NINGBO E.H HYDRAULIC CO., LTD.
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WhatsApp:
8613967841269
Address:
No.7 Longteng Road, Maoshan Industrial Area, Jiangshan, Yinzhou District, Ningbo, China, 315193

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