What are Nitto Kohki HI Cupla quick-disconnect couplings and what industrial applications use them?

Nitto Kohki HI Cupla quick-disconnect couplings are precision-engineered pneumatic connectors designed for low-pressure applications up to 19 bar operating pressure. These stainless steel (SUS) couplings serve manufacturing industries including automotive assembly, food processing, pharmaceutical production, and general industrial automation where frequent connection and disconnection of pneumatic lines is required. The HI Cupla series features both FKM and NBR sealing materials to accommodate different media compatibility requirements in production environments.

What technical specifications determine HI Cupla coupling selection for pneumatic systems?

HI Cupla coupling selection depends on three critical technical parameters: port size designation (400, 600, or 800 series), connection type (SH socket with shut-off valve, SM socket without shut-off valve, or SF plug), and seal material compatibility. The 400 series handles smaller flow rates while 800 series provides maximum flow capacity at 19 bar maximum working pressure. FKM seals offer superior chemical resistance for aggressive media, while NBR seals provide cost-effective performance for standard compressed air applications in industrial pneumatic systems.

Which international standards apply to Nitto Kohki HI Cupla pneumatic quick-connect couplings?

Nitto Kohki HI Cupla couplings comply with ISO 4414 pneumatic safety standards for compressed air systems and ISO 7241 specifications for hydraulic quick-action couplings adapted for pneumatic use. The stainless steel construction meets DIN 1.4301 material standards for corrosion resistance, while the design follows ISO 5598 fluid power connector specifications. These certifications ensure compatibility with European industrial pneumatic systems and compliance with machinery directive requirements for safe operation up to 19 bar working pressure.

What are the differences between HI Cupla 800SH, 800SM, and 800SF coupling variants?

The HI Cupla 800 series variants differ primarily in their valve configuration and connection function: 800SH sockets feature integrated shut-off valves that automatically close when disconnected, preventing air loss and contamination entry. The 800SM sockets operate without shut-off valves for continuous flow applications where pressure drop minimization is critical. The 800SF plugs provide the male connection component designed to mate with either SH or SM sockets, maintaining 19 bar pressure rating across all variants while using identical SUS stainless steel construction and FKM or NBR seal options.

What installation requirements and system compatibility apply to HI Cupla pneumatic couplings?

HI Cupla installations require clean, dry compressed air systems with filtration to 40 microns and proper line sizing to match the 400, 600, or 800 series flow capacity. Thread connections follow standard pneumatic fittings specifications, with installation torque applied to the hexagonal coupling body rather than the release sleeve to prevent internal damage. System compatibility extends to all standard pneumatic components operating within the 19 bar pressure range, including actuators, valves, and air preparation equipment commonly found in industrial automation applications.

What safety ratings and environmental operating limits apply to HI Cupla couplings?

HI Cupla couplings operate safely within ambient temperatures from -10°C to +60°C for NBR seals and -20°C to +200°C for FKM seals, maintaining full 19 bar working pressure rating throughout these ranges. The stainless steel construction provides inherent corrosion resistance equivalent to IP65 environmental protection when properly installed with appropriate thread sealants. Safety factor calculations include 4:1 minimum burst pressure ratio, ensuring reliable operation in industrial environments where sudden pressure fluctuations may occur during normal pneumatic system cycling.

What maintenance schedule and service life expectations apply to Nitto Kohki HI Cupla couplings?

HI Cupla couplings require quarterly visual inspection for seal integrity and annual replacement of NBR seals in continuous-duty applications, while FKM seals typically provide 24-month service intervals under normal industrial conditions. Expected service life reaches 100,000 connect-disconnect cycles when operated within the 19 bar pressure rating and proper ambient temperature ranges. Maintenance procedures include checking for proper engagement, testing shut-off valve operation on SH variants, and monitoring for air leakage at connection points to ensure continued pneumatic system efficiency and safety compliance.

HI Cupla

Low pressure up to 19 bar

The Nitto Kohki HI Cupla is the most extensive steel quick coupling series for low-pressure service up to 19 bar, covering 167 items. The range includes plugs (P) and sockets (S) across a wide selection of nominal sizes and port geometries: PH (hose connection), PM (metal thread), PF (flange) and SH, SM and SN sockets. Nominal sizes run from 17 to 800, with the smaller sizes (17-40) targeting standard pneumatic tools and the large nominal sizes (400, 600, 800) for high-volume compressed-air mains. SH socket types carry an NBR seal; PH, PM and PF plug types have no internal seal.

⚙ Steel body - robust for continuous duty in industrial compressed-air systems

✓ NBR seal (SH sockets) - for general compressed-air service up to 19 bar

⚡ 167 items, nominal sizes 17-800 - PH, PM, PF (plugs) and SH, SM, SN (sockets)

↕ Large nominal sizes - 400, 600 and 800 for compressed-air mains and industrial compressor installations

✦ HI Cupla standard - the most widely used Nitto Kohki coupling standard for general pneumatics

Nominal size group	Plug types	Socket types	Seal
17, 20, 30, 40	PH, PM, PF	SH (NBR), SM, SN	NBR (SH) / none
400, 600, 800	PH, PM, PF	SH (NBR), SM, SN	NBR (SH) / none

PH = hose connection, PM = male metal thread, PF = flange; SH = socket with NBR, SM = metal socket, SN = standard socket.

Typical applications: Compressed-air supply to pneumatic tools in manufacturing and assembly (nominal sizes 17-40), main line connections at compressor installations (nominal sizes 400-800), hose and pipe connections in industrial compressed-air networks, and general pneumatic applications in workshop, maintenance and service environments up to 19 bar.

Technical data from the manufacturer catalogue

Series	HI CUPLA
Body material	Steel (Chrome plated), Brass, Stainless steel (SUS304)
Seal material	Nitrile rubber (NBR), Fluoro rubber (FKM)
Max working pressure	Steel (Chrome plated) 1.5 MPa {15 kgf/cm2, 15 bar, 218 PSI}, Brass 1.0 MPa {10 kgf/cm2, 10 bar, 145 PSI}, Stainless steel (SUS304) 1.5 MPa {15 kgf/cm2, 15 bar, 218 PSI}
Working temperature	Nitrile rubber (NBR): -20 °C to +80 °C \| Fluoro rubber (FKM): -20 °C to +180 °C
Valve structure	One-way shut-off
Applicable fluids	Air, Water
Vacuum service	Not suitable for vacuum application in either connected or disconnected condition.
Size range	Thread and hose barb 1/8 inch to 1 inch, 1/4 inch to 1 inch hose
Catalogue page	C01en-b, 39

Operating principle

On disconnection the valve in the socket closes the supply line. The fluid left in the plug escapes.

Connecting sequence of a ball locking quick connect coupling.

An excellent general purpose coupling for connecting factory air supply to pneumatic tools.
Steel coupling is suitable for air. Brass or stainless steel is suitable for water. Note that fluid will come out from the plug when disconnected.
Critical structural parts of steel models are heat-treated for increased strength giving greater durability and resistance to wear.
Available in various body materials, sizes and end configurations applicable to a wide range of applications.
Built-in automatic shut-off valve in Socket.
Steel, brass, or stainless steel body available.
Various sizes and end configurations available.
Interchangeable with HI CUPLA 200, NUT CUPLA, NUT CUPLA 200, LINE CUPLA, etc.

All models of the series

PH - Hose barb

Model	Coupling part	Application	Steel (g)	Brass (g)	Stainless steel (g)	L	H	A	C	T	øBp	øBd
17PH	Plug	1/4 inch hose	24	-	-	54	16	27	20	7.2	4.5	7.5
20PH	Plug	1/4 inch hose	28	31	27	57	16	30	20	9	5	7.5
30PH	Plug	3/8 inch hose	32	34	33	61	16	34	20	11.3	7.5	7.5
40PH	Plug	1/2 inch hose	59	64	60	63	20	36	20	15	9	7.5
400PH	Plug	1/2 inch hose	65	71	66	66	22	36	23	15	9	13
600PH	Plug	3/4 inch hose	123	130	124	77	30	45	23	21	13	13
800PH	Plug	1 inch hose	151	161	151	85	34	54	23	27	20	13

SH - Hose barb

Model	Coupling part	Application	Steel (g)	Brass (g)	Stainless steel (g)	L	øD	A	T	øB
17SH	Socket	1/4 inch hose	99	-	-	(69.5)	(26.5)	27	7.2	4.5
20SH	Socket	1/4 inch hose	99	105	97	(72.5)	(26.5)	30	9	5
30SH	Socket	3/8 inch hose	102	107	100	(76.5)	(26.5)	34	11.3	7.5
40SH	Socket	1/2 inch hose	115	122	113	(78.5)	(26.5)	36	15	9
400SH	Socket	1/2 inch hose	220	235	230	(83)	35	36	15	9
600SH	Socket	3/4 inch hose	243	262	242	(92)	35	45	21	14
800SH	Socket	1 inch hose	327	350	325	(102)	35	55	27	16

PM - Male thread

Model	Coupling part	Application	Steel (g)	Brass (g)	Stainless steel (g)	L	C	T	øBp	øBd	øH(WAF)
10PM	Plug	Rc 1/8	22	24	-	37	20	R 1/8	4	7.5	Hex.14
20PM	Plug	Rc 1/4	25	27	26	41	20	R 1/4	7.5	7.5	Hex.14
30PM	Plug	Rc 3/8	40	43	41	42	20	R 3/8	7.5	7.5	Hex.19
40PM	Plug	Rc 1/2	60	65	60	46	20	R 1/2	12	7.5	Hex.22
400PM	Plug	Rc 1/2	70	73	69	50	23	R 1/2	13	13	Hex.22
600PM	Plug	Rc 3/4	113	121	114	55	23	R 3/4	19	13	Hex.32
800PM	Plug	Rc 1	182	196	183	63	23	R1	22	13	Hex.35

SM - Male thread

Model	Coupling part	Application	Steel (g)	Brass (g)	Stainless steel (g)	L	øD	T	øB	øH(WAF)
10SM	Socket	Rc 1/8	97	-	-	(52.5)	(26.5)	R 1/8	5	Hex.19
20SM	Socket	Rc 1/4	97	103	96	(55.5)	(26.5)	R 1/4	7	Hex.19
30SM	Socket	Rc 3/8	104	108	100	(56.5)	(26.5)	R 3/8	8	Hex.19
40SM	Socket	Rc 1/2	127	135	126	(59.5)	(26.5)	R 1/2	9	Hex.23
60SM	Socket	Rc 3/4	158	-	-	(62.5)	(26.5)	R 3/4	9	Hex.29
400SM	Socket	Rc 1/2	210	224	212	(63)	35	R 1/2	13	Hex.29
600SM	Socket	Rc 3/4	242	259	243	(67)	35	R 3/4	16	Hex.32
800SM	Socket	Rc 1	329	353	328	(72)	35	R1	16	Hex.36

PF - Female thread

Model	Coupling part	Application	Steel (g)	Brass (g)	Stainless steel (g)	L	C	T	øB	øH(WAF)
20PF	Plug	R 1/4	28	31	29	36	20	Rc 1/4	7.5	Hex.17
30PF	Plug	R 3/8	35	41	38	37	20	Rc 3/8	7.5	Hex.21
40PF	Plug	R 1/2	69	76	70	38	20	Rc 1/2	7.5	Hex.29
400PF	Plug	R 1/2	82	86	81	41	23	Rc 1/2	13	Hex.29
600PF	Plug	R 3/4	115	124	115	45	23	Rc 3/4	13	Hex.35
800PF	Plug	R1	189	207	190	54	23	Rc 1	13	Hex.41

SF - Female thread

Model	Coupling part	Application	Steel (g)	Brass (g)	Stainless steel (g)	L	øD	T	øH(WAF)
20SF	Socket	R 1/4	97	101	94	(49.5)	(26.5)	Rc 1/4	Hex.19
30SF	Socket	R 3/8	98	103	95	(50.5)	(26.5)	Rc 3/8	Hex.21
40SF	Socket	R 1/2	136	146	138	(52.5)	(26.5)	Rc 1/2	Hex.29
400SF	Socket	R 1/2	216	233	215	(57)	35	Rc 1/2	Hex.29
600SF	Socket	R 3/4	259	277	257	(61)	35	Rc 3/4	Hex.35
800SF	Socket	R1	327	361	327	(68)	35	Rc 1	Hex.41

PFF - Parallel female thread

Model	Coupling part	Application	Steel (g)	L	A	C	T	øB	øH(WAF)
20PFF	Plug	G 1/4	23	32	9	20	G 1/4	7.5	Hex.17

PC - Tube Fitter

Model	Coupling part	Application	Unspecified (g)	L	H	øB
60PC	Plug	For 6 mm OD tube	25	(37)	14.5	4.5
80PC	Plug	For 8 mm OD tube	30	(41)	16.5	6.5
100PC	Plug	For 10 mm OD tube	43	(45)	19.5	7.5

Dimensions in millimetres. Values in brackets apply in the connected condition.

Legend: L = overall length; H = width across flats or outside dimension; D = socket outside diameter; A = hose barb length; C = sleeve dimension; T = thread or barb size; B = bore

Series comparison

Series	Max working pressure	Size range	Valve structure	Applicable fluids
COMPACT CUPLA	10 bar	Thread 1/8 inch; tube barb for ø4 x ø6 and ø6 x ø8 tube	Two-way shut-off	Air, Water
CUBE CUPLA	10 bar	4 mm and 6 mm ID tube, 1/8 inch	Two-way shut-off, one-way shut-off or straight through, depending on the combination of valved and valveless socket and plug.	Air, Water
FULL BLOW CUPLA	15 bar	Thread and hose barb 1/4 inch, 3/8 inch, 1/2 inch. SN type for urethane hose: for dia. 6.5 mm x dia. 10 mm, dia. 8 mm x dia. 12 mm, dia. 8.5 mm x dia. 12.5 mm and dia. 11 mm x dia. 16 mm polyurethane hose.	One-way shut-off	Air
HI CUPLA 200	15 bar	Thread and hose barb 1/4 inch, 3/8 inch, 1/2 inch. Tube barb (Tube fitter): Polyurethane tube outer dia. 6 +/-0.1, 8 +/-0.15, 10 +/-0.15; Polyamide tube outer dia. 6 +0.05/-0.08, 8 +0.05/-0.1, 10 +0.05/-0.1; Fluorine contained resin tube outer dia. 6 +/-0.07, 8 +/-0.07, 10 +/-0.07.	One-way shut-off	Air
HI CUPLA ACE	15 bar	Thread and hose barb 1/4 inch, 3/8 inch; PN, SN, PNG and SNG types for ø5 mm x ø8 mm, ø6 mm x ø9 mm, ø6.5 mm x ø10 mm, ø8 mm x ø12 mm and ø8.5 mm x ø12.5 mm polyurethane hose	One-way shut-off	Air, Water
HI CUPLA	15 bar	Thread and hose barb 1/8 inch to 1 inch, 1/4 inch to 1 inch hose	One-way shut-off	Air, Water
LINE CUPLA 200	15 bar	-	One-way shut-off	Air
LEVER LOCK CUPLA	18 bar	Metal body: 3/4 inch to 4 inch. Plastic body: 3/4 inch, 1 inch, 1 1/2 inch, 2 inch, 3 inch.	Straight through	Water, Hydraulic oil, Air, Powder, Steam

Choose HI CUPLA as the general purpose connection between factory air supply and pneumatic tools: at 1.5 MPa {15 kgf/cm2} for the steel and stainless steel bodies it sits in the same pressure class as HI CUPLA 200, FULL BLOW CUPLA, LINE CUPLA 200 and HI CUPLA ACE, while MICRO CUPLA, SMALL CUPLA, COMPACT CUPLA, CUBE CUPLA and SUPER CUPLA stay at 1.0 MPa {10 kgf/cm2}. It is one-way shut-off, so fluid must run from socket to plug; where both sides have to close, COMPACT CUPLA and CUBE CUPLA are the two-way shut-off options, and LEVER LOCK CUPLA is straight through with no valve. Its thread and hose barb sizes from 1/8 inch to 1 inch in steel, brass and stainless steel (SUS304) make it the choice when one coupling type has to serve air and, in brass or stainless steel, water.

Body and seal materials

Body material
Steel (Chrome plated)
Brass
Stainless steel (SUS304)

Seal material	Mark	Working temperature	Remarks
Nitrile rubber	NBR	-20 °C to +80 °C	Standard material
Fluoro rubber	FKM	-20 °C to +180 °C	Standard material

Further catalogue data

Note	Value
Tube barb (Tube fitter) size - polyurethane tube	Outer dia. ø6 plus or minus 0.1, ø8 plus or minus 0.15, ø10 plus or minus 0.15
Tube barb (Tube fitter) size - polyamide tube	Outer dia. ø6 +0.05 / -0.08, ø8 +0.05 / -0.1, ø10 +0.05 / -0.1
Tube barb (Tube fitter) size - fluorine contained resin tube	Outer dia. ø6 plus or minus 0.07, ø8 plus or minus 0.07, ø10 plus or minus 0.07
Working pressure - steel	1.5 MPa / 15 kgf/cm2 / 15 bar / 218 PSI
Working pressure - brass	1.0 MPa / 10 kgf/cm2 / 10 bar / 145 PSI
Working pressure - stainless steel	1.5 MPa / 15 kgf/cm2 / 15 bar / 218 PSI
Flow direction	Fluid must run from socket to plug.
Maximum tightening torque, steel, Nm {kgf.cm}	1/8 inch 7 {71}, 1/4 inch 14 {143}, 3/8 inch 22 {224}, 1/2 inch 60 {612}, 3/4 inch 100 {1020}, 1 inch 120 {1224}
Maximum tightening torque, brass, Nm {kgf.cm}	1/8 inch 5 {51}, 1/4 inch 9 {92}, 3/8 inch 11 {112}, 1/2 inch 30 {306}, 3/4 inch 50 {510}, 1 inch 65 {663}
Maximum tightening torque, stainless steel, Nm {kgf.cm}	1/8 inch not offered, 1/4 inch 14 {143}, 3/8 inch 22 {224}, 1/2 inch 60 {612}, 3/4 inch 100 {1020}, 1 inch 120 {1224}
Minimum cross-sectional area (mm2), 10, 17, 20, 30, 40, 60 type, socket 10SM	17PH 16, 20PH 20, 30PH 20, 40PH 20, 10PM 13, 20PM 20, 30PM 20, 40PM 20, 20PF 20, 30PF 20, 40PF 20
Minimum cross-sectional area (mm2), 10, 17, 20, 30, 40, 60 type, socket 17SH	17PH 16, 20PH 16, 30PH 16, 40PH 16, 10PM 13, 20PM 16, 30PM 16, 40PM 16, 20PF 16, 30PF 16, 40PF 16
Minimum cross-sectional area (mm2), 10, 17, 20, 30, 40, 60 type, socket 20SH	17PH 16, 20PH 20, 30PH 20, 40PH 20, 10PM 13, 20PM 20, 30PM 20, 40PM 20, 20PF 20, 30PF 20, 40PF 20
Minimum cross-sectional area (mm2), 10, 17, 20, 30, 40, 60 type, socket 20SM, SF	17PH 16, 20PH 20, 30PH 33, 40PH 33, 10PM 13, 20PM 33, 30PM 33, 40PM 33, 20PF 33, 30PF 33, 40PF 33
Minimum cross-sectional area (mm2), 10, 17, 20, 30, 40, 60 type, socket 30SH	17PH 16, 20PH 20, 30PH 33, 40PH 33, 10PM 13, 20PM 33, 30PM 33, 40PM 33, 20PF 33, 30PF 33, 40PF 33
Minimum cross-sectional area (mm2), 10, 17, 20, 30, 40, 60 type, socket 30SM, SF	17PH 16, 20PH 20, 30PH 33, 40PH 33, 10PM 13, 20PM 33, 30PM 33, 40PM 33, 20PF 33, 30PF 33, 40PF 33
Minimum cross-sectional area (mm2), 10, 17, 20, 30, 40, 60 type, socket 40SH	17PH 16, 20PH 20, 30PH 33, 40PH 33, 10PM 13, 20PM 33, 30PM 33, 40PM 33, 20PF 33, 30PF 33, 40PF 33
Minimum cross-sectional area (mm2), 10, 17, 20, 30, 40, 60 type, socket 40SM, SF	17PH 16, 20PH 20, 30PH 33, 40PH 33, 10PM 13, 20PM 33, 30PM 33, 40PM 33, 20PF 33, 30PF 33, 40PF 33
Minimum cross-sectional area (mm2), 10, 17, 20, 30, 40, 60 type, socket 60SM	17PH 16, 20PH 20, 30PH 33, 40PH 33, 10PM 13, 20PM 33, 30PM 33, 40PM 33, 20PF 33, 30PF 33, 40PF 33
Minimum cross-sectional area (mm2), 400, 600, 800 type, socket 400SH	400PH 64, 600PH 64, 800PH 64, 400PM 64, 600PM 64, 800PM 64, 400PF 64, 600PF 64, 800PF 64
Minimum cross-sectional area (mm2), 400, 600, 800 type, socket 400SM, SF	400PH 64, 600PH 94, 800PH 94, 400PM 94, 600PM 94, 800PM 94, 400PF 94, 600PF 94, 800PF 94
Minimum cross-sectional area (mm2), 400, 600, 800 type, socket 600SH	400PH 64, 600PH 94, 800PH 94, 400PM 94, 600PM 94, 800PM 94, 400PF 94, 600PF 94, 800PF 94
Minimum cross-sectional area (mm2), 400, 600, 800 type, socket 600SM, SF	400PH 64, 600PH 94, 800PH 94, 400PM 94, 600PM 94, 800PM 94, 400PF 94, 600PF 94, 800PF 94
Minimum cross-sectional area (mm2), 400, 600, 800 type, socket 800SH	400PH 64, 600PH 94, 800PH 94, 400PM 94, 600PM 94, 800PM 94, 400PF 94, 600PF 94, 800PF 94
Minimum cross-sectional area (mm2), 400, 600, 800 type, socket 800SM, SF	400PH 64, 600PH 94, 800PH 94, 400PM 94, 600PM 94, 800PM 94, 400PF 94, 600PF 94, 800PF 94
WAF	WAF stands for width across flats.
Scope of specifications	Above specifications apply only to CUPLA. Maximum working pressure and working temperature range may vary depending on tube materials you use with and the working temperature.
Drawings	Above pictures are plugs and sockets of steel 20, 30 and 40 models.
Flow rate	Pressure - Flow Characteristics chart on page 40 (test conditions - Fluid : Air), flow rate in m3/min (ANR) from 0 to 6.0 against pressure 0 to 0.7 MPa {0 to 7 kgf/cm2}, plotted for (1) 800SM x 800PH, (2) 600SM x 600PH, (3) 400SM x 400PH, (4) 40SM x 40PH / 30SM x 30PH / 60SM x 40PH, (5) 20SM x 20PH. Numerical values are not printed in the page text.

Interchangeability and size groups

From page 40 (HI CUPLA specifications): Sockets and plugs of models 10, 17, 20, 30, 40, and 60 can be connected with each other regardless of end configurations. Sockets and plugs of models 400, 600, and 800 can be connected with each other regardless of end configurations. The 10/17/20/30/40/60 group and the 400/600/800 group can not be connected across each group. Interchangeable with each models of NUT CUPLA series and HI CUPLA series. Please see page 21 for 'HI CUPLA Series Interchangeability'. From pages 21 and 22, 'HI CUPLA Series Interchangeability'. PART 1 - Following plugs and sockets can be connected with each other. PLUG SIDE (all listed plugs can be connected with all listed sockets of part 1): - HI CUPLA: 17PH, 20PH, 30PH, 40PH; 10PM, 20PM, 30PM, 40PM; 20PF, 30PF, 40PF; 20PFF; 60PC, 80PC, 100PC; 90PN-BH. - NUT CUPLA: 50PN (10PAH), 60PN (20PAH), 65PN; 80PN (30PAH), 85PN, 110PN (40PAH); 50PNG, 65PNG, 85PNG. - HI CUPLA ACE: 20PH-PLA, 30PH-PLA; 20PM-PLA, 30PM-PLA; 50PN-PLA, 60PN-PLA, 65PN-PLA, 80PN-PLA, 85PN-PLA; 20PFF-PLA; 50PNG-PLA, 65PNG-PLA, 85PNG-PLA. - ROTARY PLUG: RL-20PM, RL-30PM; RL-20PFF. - TWIST PLUG: TS-10PM, TS-20PM, TS-30PM; TS-20PFF. - PURGE PLUG: PV-20PH, PV-30PH, PV-40PH; PV-65PN, PV-85PN. - ANTI-VIBRATION PLUG HOSE: SHA-3-2R, SHA-3-3R. - NK CUPLA HOSE with HI CUPLA ACE: NKU-605B, NKU-610B, NKU-620B (65PNG); NKU-810B, NKU-820B (85PNG). - NK CUPLA HOSE with FULL BLOW CUPLA: NKU-605P, NKU-610P (65PNG); NKU-810P (85PNG). - NK CUPLA COIL HOSE with HI CUPLA ACE: NKC-503B, NKC-505B (50PNG); NKC-603B, NKC-605B (65PNG). - NK CUPLA COIL HOSE with FULL BLOW CUPLA: NKC-603P, NKC-605P (65PNG). - ROTARY LINE CUPLA: RT Type (Inlet Port). - LINE CUPLA 200: 200T Type (Inlet Port). - ROTARY FULL BLOW LINE CUPLA: FBH-RT Type (Inlet Port). - HI CUPLA ACE T Type: HA-T Type (Inlet Port). - SUPER CUPLA: 02S20P (End Configuration). SOCKET SIDE (part 1): - HI CUPLA: 17SH, 20SH, 30SH, 40SH; 10SM, 20SM, 30SM, 40SM, 60SM; 20SF, 30SF, 40SF; 90SN-BH. - HI CUPLA BL: 20SH-BL, 30SH-BL, 40SH-BL; 20SM-BL, 30SM-BL, 40SM-BL; 20SF-BL, 30SF-BL, 40SF-BL; 65SN-BL, 80SN-BL, 85SN-BL. - HI CUPLA TW Type: TW20SH, TW30SH, TW40SH; TW20SM, TW30SM, TW40SM; TW20SF, TW30SF, TW40SF. - HI CUPLA 200: 200-17SH, 200-20SH, 200-30SH, 200-40SH; 200-20SM, 200-30SM, 200-40SM; 200-20SF, 200-30SF, 200-40SF; 200-60SC, 200-80SC, 200-100SC. - FULL BLOW CUPLA: FBH-20SH, FBH-30SH, FBH-40SH; FBH-20SM, FBH-30SM, FBH-40SM; FBH-20SF, FBH-30SF, FBH-40SF; FBH-65SN, FBH-80SN, FBH-85SN, FBH-110SN. - NUT CUPLA: 50SN (10SAH), 60SN (20SAH), 65SN; 80SN (30SAH), 85SN, 110SN (40SAH). - NUT CUPLA 200: 200-50SN, 200-60SN, 200-65SN, 200-80SN; 200-85SN, 200-110SN; 200-50SNG, 200-65SNG, 200-85SNG. - ROTARY NUT CUPLA: 65SNR, 85SNR; 65SNRG, 85SNRG. - DUSTER CUPLA: DCS-20PH, DCS-30PH, DCS-40PH; DCS-65PNG, DCS-85PNG. - LOCK CUPLA 200: L200-20SH, L200-30SH, L200-40SH; L200-20SM, L200-30SM, L200-40SM; L200-20SF, L200-30SF, L200-40SF; L200-65SNRG, L200-85SNRG. - PURGE HI CUPLA: PV-20SM, PV-30SM, PV-40SM. - PURGE LINE CUPLA: RE-PV-30 Type (Outlet Port). - ROTARY LINE CUPLA: RT Type (Outlet Port), RE Type (Outlet Port). - LINE CUPLA 200: 200T Type (Outlet Port), 200L Type (Outlet Port), 200S Type (Outlet Port). - ROTARY FULL BLOW LINE CUPLA: FBH-RE Type (Outlet Port), FBH-RT Type (Outlet Port). - HI CUPLA ACE: HA-20SH, HA-30SH; HA-20SM, HA-30SM, HA-50SN, HA-60SN; HA-65SN, HA-80SN, HA-85SN; HA-T Type (Outlet Port); HA-50SNG, HA-65SNG, HA-85SNG. - NK CUPLA HOSE with HI CUPLA ACE: NKU-605B, NKU-610B, NKU-620B (HA-65SNG); NKU-810B, NKU-820B (HA-85SNG). - NK CUPLA HOSE with FULL BLOW CUPLA: NKU-605P, NKU-610P (FBH-65SNG); NKU-810P (FBH-85SNG). - NK CUPLA COIL HOSE with HI CUPLA ACE: NKC-503B, NKC-505B (HA-50SNG); NKC-603B, NKC-605B (HA-65SNG). - NK CUPLA COIL HOSE with FULL BLOW CUPLA: NKC-603P, NKC-605P (FBH-65SNG). PART 2 - Not interchangeable with part 1. The following plugs and sockets can be connected with each other. PLUG SIDE (part 2): - HI CUPLA: 400PH, 600PH, 800PH; 400PM, 600PM, 800PM; 400PF, 600PF, 800PF. - LINE CUPLA 200: 200L Type (Inlet Port); 200S Type (Inlet Port). SOCKET SIDE (part 2): - HI CUPLA: 400SH, 600SH, 800SH; 400SM, 600SM, 800SM; 400SF, 600SF, 800SF. - PURGE HI CUPLA: PV-400SM, PV-600SM. - PURGE HI CUPLA PVR Type: PVR-400SH, PVR-600SH, PVR-800SH; PVR-400SM, PVR-600SM, PVR-800SM; PVR-400SF, PVR-600SF, PVR-800SF.

Safety and application notes

Fluid must run from socket to plug.
Note that fluid will come out from the plug when disconnected.
Not suitable for vacuum application in either connected or disconnected condition.
Above specifications apply only to CUPLA. Maximum working pressure and working temperature range may vary depending on tube materials you use with and the working temperature.
When connecting an extremely soft tube such as soft polyurethane or soft nylon, attach the insert ring specified by the tube manufacturer to the inner diameter of the tube to be connected.
The operable temperature range depends on the operating conditions.

All technical data on this page is taken from the Nitto Kohki general catalogue Quick Connect Couplings C01en-b, page 39. The complete catalogue is available for download on this page.