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

Made in Japan
Manufacturer : NAGAHORI INDUSTRY CO., LTD.
Model : 03, 04, 06
- High pressure [20.5Mpa], Twin valve Type
- HY type assures 1,000,000 cycle’s impulse test.
- Surface treatment is trivalent chromate; it is obedient to RoHS regulation.
- 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 | 03 | 04 | 06 |
---|---|---|---|
Nominal size | 3/8″ | 1/2″ | 3/4″ |
Nominal pipe size (mm) | 10 | 15 | 20 |
Body material | Steel (Zinc-plated, Trivalent Chromate Conversion) | ||
Connection | Female thread (F) only | ||
Packing material | Nitrile rubber (NBR) | ||
Normal pressure | 20.5MPa | ||
Max. pressure | 31.0MPa | ||
Applicable fluid | Operating oil |
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 | 03 | 04 | 06 |
---|---|---|---|
Smallest area | 37.7 | 87.9 | 146 |
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