Flat Face Screw Type Couplings
Connectable Under Pressure
FSI Series
Features and Benefits
• High Tech Z-786 Anti-Corrosion plating salt spray
tested for 700 hrs before any appearance of surface
red rust
• High working pressures
• Connects and disconnects by hand up to 4,400 PSI
• Seal blowout resistant to 4,400 PSI when
connecting or disconnecting with residual pressure
Applications
• Exceeds 1,000,000 impulse cycles
• FSI series couplings are used in a wide range of
industrial markets when connecting and
disconnecting is needed
• Flat face design eliminates spillage upon
disconnection
• High pressure, low pressure drop and high impulse
• Thread to connect style coupling eliminates
applications
brinneling issues
• Drilling rigs, oilfield services, drilling equipment,
cranes, heavy equipment, hammer attachments and
much more
Notes
FSI aluminum cap and plugs with wire attachments
play a crucial role in the life of the coupling sets.
Caps and plugs come in an assortment of colors.
Working
Body Size Pressure
(PSI)
1/4”
3/8”
1/2”
3/4”
1”
1-1/4”
1-1/2”
2”
4
9,000
6,500
6,500
6,500
6,200
6,200
5,700
5,700
Burst
Pressure
(PSI)
27,550
20,300
20,300
20,300
20,300
20,300
20,300
17,400
Flow
@ 14.5
PSID
(GPM)
3.17
6.08
12
20
26.5
50
100
200
• Heavy Duty Hex Nut
• Standard Threads: NPT, SAE, BSPP, DIN, Code 62
* Interchangeable with Stucchi VEP
Max Flow
(GPM)
Max Connect
Pressure
(PSI)
Fluid Spillage
(CC)
6.34
12.15
24
40
53
75
185
265
4,400
4,400
4,400
4,400
4,400
4,400
4,400
4,400
.008
.010
.012
.015
.020
.030
.050
.100
DNP Americas | 281-388-0253 | Fax 281-388-1902 | www.dnpamericas.com