Japan, NAGAHORI INDUSTRY, Quick Couplings
NAC – SH TYPE Quick Couplings

Made in Japan
Manufacturer : NAGAHORI INDUSTRY CO., LTD.
Model : 02, 03, 04, 06, 08
- High pressure (20.5MPa) Twin valve Type, Stainless Body
- Both socket and plug have automatic shut-off valves for high pressure applications.
- Stainless steel SUS304 for excellent resistance to corrosion.
- The design of inner seal mechanism allows working pressure of 20.5 MPa.
- Double-sleeve lock assures tight connection against vibration and impulse.
- When disconnecting, both socket and plug are sealed by automatic shut off valves instantly.
- When connecting, automatic shut off valves are open and the socket is sealed by O-ring.
- Fluid can flow from both socket and plug.
- Packing material should be selected for the applicable fluid; please consult us for suitable packing material.
- When connecting to a female thread or a hose, please use a nipple.
- Different sizes are not interchangeable.
Caution:
- Do not connect or disconnect couplings under pressure.
- Don’t apply pressure on a socket or a plug when disconnecting. This may cause the valve blown out.
- Don’t hit the top of valve with hammer or other tools. This may cause leakage or malfunction.
- Don’t use for water-glycol fluid, which damages to the plating and O-ring.
- When mounting on the male thread, excessive tightening may cause the crack of the coupling.
- Scraps of the seal tape and dust causes fluid leakage. Be careful not to stick them on the couplings.
- Putting dust covers on a socket and a plug is recommendable, when they are disconnected.
Specification
Model | 02 | 03 | 04 | 06 | 08 |
---|---|---|---|---|---|
Nominal size | 1/4″ | 3/8″ | 1/2″ | 3/4″ | 1″ |
Nominal pipe size (mm) | 8 | 10 | 15 | 20 | 25 |
Body material | Stainless steel(SUS304) | ||||
Connection | Female thread only | ||||
Packing material | Fluororubber(FKM) | ||||
Normal pressure | 20.5MPa | ||||
Max.pressure | 31.0MPa | ||||
Applicable fluids | Hydraulic Oil, Water, Gas | ||||
Accessory | Dust Cover |
Packing material and Working temperature’s range
Packing material | Mark | Feature |
---|---|---|
Nitrile rubber | NBR | Oil resistance |
Fluororubber | FKM | Heat, oil resistance |
Flow’s smallest area
(mm2)
Model | 02 | 03 | 04 | 06 | 08 |
---|---|---|---|---|---|
Smallest area | 26 | 47 | 84 | 153 | 233 |
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