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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.
High pressure, HY Type
  • 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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