Japan, NAGAHORI INDUSTRY, Quick Couplings
NAC – SP-V TYPE Quick Couplings

- Made in Japan
Manufacturer : NAGAHORI INDUSTRY CO., LTD.
Model : 01V, 02V, 03V, 04V - Medium pressure, Twin valve Vacuum Type
- Both socket and plug have automatic shut-off valves for wide range of vacuum applications down to 1.3 x 10-1Pa.
- Interchangeable with SP types but restricts flow.
- 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 | 01V | 02V | 03V | 04V | ||||
---|---|---|---|---|---|---|---|---|
Nominal Size | 1/8″ | 1/4″ | 3/8″ | 1/2″ | ||||
Nominal pipe size (mm) | 6 | 8 | 10 | 15 | ||||
Body material | Brass, Stainless steel (SUS304) | |||||||
Connection | Female thread (F) only | |||||||
Packing material | Standard | Chloroprene Rubber (CR) | ||||||
Option | Fluororubber (FKM) Nitrile rubber hydride(H-NBR) | |||||||
Normal pressure | Brass | 5.0MPa | 3.0MPa | |||||
Max.pressure | 7.5MPa | 4.5MPa | ||||||
Normal pressure | Stainless | 7.5MPa | 4.5MPa | |||||
Max.pressure | 10.0MPa | 6.5MPa | ||||||
Applicable fluid | CR : R12/22, Helium, Nitrogen, Air FPM : R12, Helium, Nitrogen, Air H-NBR : R134a |
Packing material and Working temperature’s range
Packing material | Chloroprene Rubber | Nitrile rubber hydride |
---|---|---|
Mark | CR | H-NBR |
Advantage | Resistant to CFC-12, HCFC-22 and HFC-134a | Resistant to HFC-134a, R410A, R407C and R404A |
Application | Air conditioner | Air conditioner |
Flow’s smallest area
(mm2)
Model | 01V | 02V | 03V | 04V |
---|---|---|---|---|
Smallest area | 15 | 23.1 | 52 | 98.2 |