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NAC – SP TYPE Quick Couplings

Made in Japan

Manufacturer : NAGAHORI INDUSTRY CO., LTD.

Model :  01, 02, 03, 04, 06, 08, 10, 12, 16

Medium pressure, Twin valve Type

    • Both socket and plug have automatic shut-off valves for medium pressure applications.
    • Various packing materials enable a wide variety of applications.
    • SUS 316 is available.

  • 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

Brass = B , Stainless steel = S , Steel = C Pressure Unit (MPa)
Model
01
02
03
04
06
08
10
12
16
Nominal Size
1/8″
1/4″
3/8″
1/2″
3/4″
1″
11/4″
11/2″
2″
Nominal pipe size (mm)
6
8
10
15
20
25
32
40
50
Body material
Brass, Stainless steel (SUS304)
Steel (Zinc-plated) SC, Stainless steel (SUS316*)
Connection
Female thread (F) only
Packing material
B
Fluororubber (FKM)
S
C
Nitrile rubber (NBR)
Normal pressure
B
2.0
1.5
Max.pressure
3.0
2.3
Normal pressure
S
3.0
2.0
Max.pressure
4.5
3.0
Normal pressure
C
7.5
4.5
3.0
2.0
Max.pressure
10.0
6.5
4.5
3.0
Applicable fluid
B
Hydraulic oil, Water, Air etc.
S
C
Hydraulic oil, Air etc.
*Stainless steel (SUS316) is option.

Packaging Material and Working Temperature’s Range

Packing material
Mark
Feature
Nitrile rubber
NBR
Oil resistance
Fluororubber
FKM
Heat, oil resistance
Perfluoro®
P
Chemical resistance
Ethylene propylene
EPDM
Weathering resistance
Heat resistant FPM
A
Steam resistance
Kalrez®
K
Chemical, heat resistance

Perfluoro® is a trademark of Daikin, Japan.
Kalrez® is a trademark of DuPont Performance Elastomers LLC, U.S.A.

 

Flow’s smallest area

(mm2)
Model
01
02
03
04
06
08
10
12
16
Smallest area
13
23
55
83
143
234
378
536
803

 

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