HI Cupla 2 way type
Quick Couplings
The Nitto Kohki HI Cupla 2 way type is an HI Cupla with double shut-off for compressed air with an operating pressure depending on the series. Double shut-off based on the HI series.
As an authorised Nitto Kohki distributor we stock 9 variants of the HI Cupla 2 way type - bodies in steel, NBR seals, model series TW-20 …. Built to ISO 6150-B.
| Parameter | Value |
|---|---|
| Type | HI Cupla with double shut-off |
| Operating pressure | depending on the series |
| Body materials | steel |
| Seals | NBR |
| Media | compressed air |
| Model series | TW-20 … |
| Standard | ISO 6150-B |
| Variants in range | 9 |
Typical applications: special applications in manufacturing, assembly and maintenance.
Technical data from the manufacturer catalogue
| Series | HI CUPLA Two Way Type |
|---|---|
| Body material | Steel (Chrome plated), Brass (made-to-order item), Stainless steel (made-to-order item) |
| Seal material | Nitrile rubber (NBR), standard material, Fluoro rubber (FKM), made-to-order item |
| Max working pressure | 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 |
| Vacuum service | Not suitable for vacuum application in either connected or disconnected condition. |
| Size range | Thread 1/4 inch, 3/8 inch, 1/2 inch. Hose barb for dia. 6.5 mm x dia. 10 mm and dia. 8.5 mm x dia. 12.5 mm hose. |
| Catalogue page | C01en-b, 48 |
Operating principle
- Can be connected with plugs for HI CUPLA Models 10, 17, 20, 30 and 40 and allows fluid to flow from either plug or socket side when coupled.
- Wide range of connections such as from ports on air pipes in factory to individual pneumatic devices.
- Critical structural parts are heat-treated for increased strength giving greater durability and resistance to wear.
- Available in various sizes and end configurations to suit a wide range of applications.
- For bi-directional compressed air flow.
- Air flows in either direction from plug or from socket side when coupled.
- Fluid flow can be bi-directional when socket and plug are connected.
All models of the series
SH - Hose barb
| Model | Coupling part | Application | Steel (g) | L | øD | A | T | øB |
|---|---|---|---|---|---|---|---|---|
| TW20SH | Socket | 1/4 inch hose | 98 | (72.5) | (26.5) | 30 | 9 | 5 |
| TW30SH | Socket | 3/8 inch hose | 102 | (76.5) | (26.5) | 34 | 11.3 | 7.5 |
| TW40SH | Socket | 1/2 inch hose | 117 | (78.5) | (26.5) | 36 | 15 | 9 |
SM - Male thread
| Model | Coupling part | Application | Steel (g) | L | øD | T | øB | øH(WAF) |
|---|---|---|---|---|---|---|---|---|
| TW20SM | Socket | Rc 1/4 | 95 | (55.5) | (26.5) | R 1/4 | 7 | Hex.19 |
| TW30SM | Socket | Rc 3/8 | 109 | (56.5) | (26.5) | R 3/8 | 8 | Hex.19 |
| TW40SM | Socket | Rc 1/2 | 116 | (59.5) | (26.5) | R 1/2 | 9 | Hex.23 |
SF - Female thread
| Model | Coupling part | Application | Steel (g) | L | øD | T | øH(WAF) |
|---|---|---|---|---|---|---|---|
| TW20SF | Socket | R 1/4 | 95 | (49.5) | (26.5) | Rc 1/4 | Hex.19 |
| TW30SF | Socket | R 3/8 | 96 | (50.5) | (26.5) | Rc 3/8 | Hex.21 |
| TW40SF | Socket | R 1/2 | 137 | (52.5) | (26.5) | Rc 1/2 | Hex.29 |
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 ZEROSPILL CUPLA | 10 bar | Thread 1/8 inch, 1/4 inch | Two-way shut-off (Spill Reduction) | Air, Water |
| CUPLA HOSE with FULL BLOW CUPLA | 10 bar | Hose size ø5 mm×ø8 mm, ø6.5 mm×ø10 mm, ø8.5 mm×ø12.5 mm | One-way shut-off | Air |
| FLOW MONITOR | 10 bar | Rc 3/8 and Rc 1/2 | - | Water |
| ANTI-VIBRATION PLUG HOSE | 15 bar | R 1/4 (SHA-3-2R), R 3/8 (SHA-3-3R) | One-way shut-off | Air |
| HI CUPLA BL | 15 bar | 1/4 inch, 3/8 inch, 1/2 inch (thread and hose barb); SN type for urethane hose: for 6.5 x 10 mm, 8 x 12 mm and 8.5 x 12.5 mm hose | One-way shut-off | Air, Water |
| HI CUPLA Two Way Type | 15 bar | Thread 1/4 inch, 3/8 inch, 1/2 inch. Hose barb for dia. 6.5 mm x dia. 10 mm and dia. 8.5 mm x dia. 12.5 mm hose. | One-way shut-off | Air |
| FLATFACE CUPLA F35 | 350 bar | Thread 1/4 inch, 3/8 inch, 1/2 inch, 3/4 inch, 1 inch | Two-way shut-off (Spill Reduction) | Hydraulic oil |
| FLATFACE CUPLA FF | 350 bar | 3/8 inch, 1/2 inch, 3/4 inch, 1 inch (thread) | Two-way shut-off (Spill Reduction) | Hydraulic oil |
Pick HI CUPLA Two Way Type when compressed air at up to 1.5 MPa {15 kgf/cm2} has to flow from either side once socket and plug are coupled, and the plugs already installed are HI CUPLA models 10, 17, 20, 30 or 40. HI CUPLA BL, NUT CUPLA, LOCK CUPLA 200, ROTARY LINE CUPLA, ROTARY FULL BLOW LINE CUPLA and ROTARY PLUG cover the same 1.5 MPa but are listed as one-way shut-off, while PURGE LINE CUPLA and TWIST PLUG stop at 1.0 MPa. Where the requirement is instead to hold the medium in both halves on disconnection, COMPACT ZEROSPILL CUPLA with its two-way shut-off at 1.0 MPa is the series to look at.
Body and seal materials
| Body material |
|---|
| Steel (Chrome plated) |
| Brass (made-to-order item) |
| Stainless steel (made-to-order item) |
| Seal material | Mark | Working temperature | Remarks |
|---|---|---|---|
| Nitrile rubber | NBR | -20 °C to +80 °C | Standard material |
| Fluoro rubber | FKM | -20 °C to +180 °C | Made-to-order item |
Further catalogue data
| Note | Value |
|---|---|
| Maximum tightening torque | 1/4 inch: 14 {143} Nm {kgf . cm}; 3/8 inch: 22 {224}; 1/2 inch: 60 {612} |
| Flow direction | Fluid flow can be bi-directional when socket and plug are connected. |
| Body material note | Body material of brass or stainless steel is available as made-to-order item. |
| Flow rate | The page gives a pressure - flow characteristics chart only, no tabulated flow values. Test fluid is air. Curve 1 is TW20SM x 20PM / TW30SM x 30PM and curve 2 is TW40SM x 40PM, plotted from 0 to 0.7 MPa {7 kgf/cm2} against 0 to 2.5 m3/min (ANR). |
Interchangeability and size groups
Interchangeable with plugs of HI CUPLA models 10, 17, 20, 30 and 40. Interchangeable with each models of NUT CUPLA series and HI CUPLA series. Please see page 21 for "HI CUPLA Series Interchangeability".
Safety and application notes
- Before use, please be sure to read "Safety Guide" described at the end of this book and "Instruction Sheet" that comes with the products.
- Not suitable for vacuum application in either connected or disconnected condition.
- 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 48. The complete catalogue is available for download on this page.
