Multi Cupla MAM-A Type
Multi couplings
The Nitto Kohki Multi Cupla MAM-A Type is a multi-circuit quick coupling in brass with FKM (fluoroelastomer) seals that connects and disconnects multiple pneumatic lines in a single action. The range covers 18 items with 1 to 4 circuit blocks (MAM-A-1P/S through MAM-A-4P/S), in plug (P) and socket (S) versions, with different port configurations per block (e.g. MAM-A-3P6, MAM-A-3P12 for different hose connection sizes). The brass body and FKM seals provide resistance to mineral oils, fuels and elevated temperatures.
Multi-circuit coupling 1-4 circuits - simultaneous connection/disconnection of multiple lines in one action
Brass with FKM seal - resistant to mineral oils, fuels and elevated operating temperatures
Port variants - P6/P12/S6/S12 suffix for different hose connection diameters per block
P and S versions - plug (P) and socket (S) available in identical circuit counts
Reduced changeover time - fast tool change for applications with multiple pneumatic lines
| Series | Circuits | Body material | Seal |
|---|---|---|---|
| MAM-A-1P / MAM-A-1S | 1 | Brass | FKM |
| MAM-A-2P, -2P12 / MAM-A-2S, -2S12 | 2 | Brass | FKM |
| MAM-A-3P, -3P6, -3P12 / MAM-A-3S, -3S6, -3S12 | 3 | Brass | FKM |
| MAM-A-4P, -4P4, -4P8 / MAM-A-4S, -4S4, -4S8 | 4 | Brass | FKM |
Typical applications: Injection moulding and tooling machines with multiple cooling and compressed-air circuits, robotic tool changers with several pneumatic lines, multi-circuit hydraulic systems on machine tools, and installations where multiple lines must be connected and disconnected simultaneously to minimise changeover time.
Technical data from the manufacturer catalogue
| Series | MULTI CUPLA MAM-A Type |
|---|---|
| Body material | CUPLA: Brass (Nickel plated), Plate: Aluminum alloy, Locking unit: Steel (Nickel plated) |
| Seal material | Fluoro rubber (FKM) |
| Max working pressure | 1.0 MPa {10 kgf/cm2} |
| Working temperature | Fluoro rubber (FKM), standard material: -20 °C to +180 °C |
| Valve structure | Two-way shut-off |
| Applicable fluids | Air, Water |
| Vacuum service | 1.3x10-1 Pa {1x10-3 mmHg}: socket only -, plug only -, when connected Operational |
| Size range | 1/4 inch to 1/2 inch for MAM-A Type plates with CUPLA; 1/8 inch to 1/2 inch for individual CUPLA of MAM-A-SP Type; 1/4 inch to 1/2 inch for individual CUPLA of MAM-A-ZEL Type |
| Catalogue page | C01en-b, 119 |
Operating principle
- Handles several ports at once.
- Simple manual lever action completes easy connection/disconnection.
- Two-stage lever operation prevents CUPLA from accidental dropping due to sudden detachment.
- Comes with lock mechanism to prevent accidental disconnection.
- Large flow equivalent to that of SP CUPLA Type A.
- Two kinds of plates are available for each size.
- Automatic shut-off valves in both socket and plug prevent fluid spill out on disconnection.
- Self-aligned valve design provides safety sealing of individual socket or plug when disconnected.
All models of the series
MAM-A - Female thread ports
| Model | Coupling part | Application | Assembly (g) |
|---|---|---|---|
| MAM-A-2P12 | plate with CUPLA, plug side | R 1/4 | 1650 |
| MAM-A-2S12 | plate with CUPLA, socket side | R 1/4 | 2800 |
| MAM-A-3P6 | plate with CUPLA, plug side | R 3/8 | 1250 |
| MAM-A-3S6 | plate with CUPLA, socket side | R 3/8 | 2400 |
| MAM-A-3P12 | plate with CUPLA, plug side | R 3/8 | 1950 |
| MAM-A-3S12 | plate with CUPLA, socket side | R 3/8 | 3300 |
| MAM-A-4P4 | plate with CUPLA, plug side | R 1/2 | 1400 |
| MAM-A-4S4 | plate with CUPLA, socket side | R 1/2 | 2700 |
| MAM-A-4P8 | plate with CUPLA, plug side | R 1/2 | 2300 |
| MAM-A-4S8 | plate with CUPLA, socket side | R 1/2 | 4000 |
MAM-A-SP - Female thread
| Model | Coupling part | Application | Brass (g) | L | T | øH (WAF) | øøD1 | øøD2 |
|---|---|---|---|---|---|---|---|---|
| MAM-A-1P | Plug | R 1/8 | 25 | 34 | Rc 1/8 | 14 | 17 | 14 |
| MAM-A-1S | Socket | R 1/8 | 49 | 41 | Rc 1/8 | 14 | 17.5 | 16 |
| MAM-A-2P | Plug | R 1/4 | 40 | 43.5 | Rc 1/4 | Hex.17 | 19 | 16 |
| MAM-A-2S | Socket | R 1/4 | 82 | 49 | Rc 1/4 | 17 | 22 | 20 |
| MAM-A-3P | Plug | R 3/8 | 62 | 47.5 | Rc 3/8 | Hex.21 | 23 | 20 |
| MAM-A-3S | Socket | R 3/8 | 122 | 56.5 | Rc 3/8 | 21 | 26 | 24 |
| MAM-A-4P | Plug | R 1/2 | 127 | 51.5 | Rc 1/2 | Hex.29 | 32 | 25 |
| MAM-A-4S | Socket | R 1/2 | 256 | 61.5 | Rc 1/2 | 29 | 32 | 30 |
MAM-A-ZEL - Female thread
| Model | Coupling part | Application | Brass (g) | L | H | T | øøD1 | øøD2 |
|---|---|---|---|---|---|---|---|---|
| MAM-A-ZEL-2P | Plug | R 1/4 | 42 | 47 | Hex.17 | Rc 1/4 | 19 | 16 |
| MAM-A-ZEL-2S | Socket | R 1/4 | 78 | 46 | Hex.21 | Rc 1/4 | 23 | 20 |
| MAM-A-ZEL-3P | Plug | R 3/8 | 64 | 49 | Hex.21 | Rc 3/8 | 23 | 20 |
| MAM-A-ZEL-3S | Socket | R 3/8 | 129 | 51.5 | Hex.27 | Rc 3/8 | 24 | 29.5 |
| MAM-A-ZEL-4P | Plug | R 1/2 | 123 | 55 | Hex.29 | Rc 1/2 | 32 | 25 |
| MAM-A-ZEL-4S | Socket | R 1/2 | 210 | 59 | Hex.32 | Rc 1/2 | 35 | 30 |
MAM-A-CL - Plate for mounting MAM-A-ZEL / MAM-A-SP Type
| Model | Coupling part | Application | Aluminium (g) |
|---|---|---|---|
| MAM-A-2P6-CL | plate, plug side | R 1/4 | 860 |
| MAM-A-2S6-CL | plate, socket side | R 1/4 | 1658 |
| MAM-A-2P12-CL | plate, plug side | R 1/4 | 1170 |
| MAM-A-2S12-CL | plate, socket side | R 1/4 | 1816 |
| MAM-A-3P6-CL | plate, plug side | R 3/8 | 878 |
| MAM-A-3S6-CL | plate, socket side | R 3/8 | 1668 |
| MAM-A-3P12-CL | plate, plug side | R 3/8 | 1206 |
| MAM-A-3S12-CL | plate, socket side | R 3/8 | 1836 |
| MAM-A-4P4-CL | plate, plug side | R 1/2 | 892 |
| MAM-A-4S4-CL | plate, socket side | R 1/2 | 1676 |
| MAM-A-4P8-CL | plate, plug side | R 1/2 | 1284 |
| MAM-A-4S8-CL | plate, socket side | R 1/2 | 1952 |
MAM-B-CL - Plate for mounting MAM-A-ZEL / MAM-A-SP Type
| Model | Coupling part | Application |
|---|---|---|
| MAM-B-1P8-CL | plate, plug side | 1/8 inch |
| MAM-B-1S8-CL | plate, socket side | 1/8 inch |
| MAM-B-1P12-CL | plate, plug side | 1/8 inch |
| MAM-B-1S12-CL | plate, socket side | 1/8 inch |
| MAM-B-2P6-CL | plate, plug side | 1/4 inch |
| MAM-B-2S6-CL | plate, socket side | 1/4 inch |
| MAM-B-2P8-CL | plate, plug side | 1/4 inch |
| MAM-B-2S8-CL | plate, socket side | 1/4 inch |
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 |
|---|---|---|---|---|
| MULTI CUPLA MALC Type | MALC-01 Type: 1.0 MPa {10 kgf/cm2}; MALC-SP Type: 1.5 to 7.0 | MALC-01 Type: one size; MALC-SP Type: sizes 1, 2, 3, 4, 6, 8 and 12; MALC-HSP Type: sizes 1, 2, 3, 4, 6 and 8 | MALC-01 Type: One-way shut-off; MALC-SP Type: Two-way shut-off (Spill Reduction); MALC-HSP Type: Two-way shut-off (Spill Reduction) | Air, Water, Hydraulic oil |
| MULTI CUPLA MAM Type | 7 bar | Rc 1/8 | One-way shut-off (valve on socket side only) | Air |
| MULTI CUPLA MAM-A Type | 10 bar | 1/4 inch to 1/2 inch for MAM-A Type plates with CUPLA; 1/8 inch to 1/2 inch for individual CUPLA of MAM-A-SP Type; 1/4 inch to 1/2 inch for individual CUPLA of MAM-A-ZEL Type | Two-way shut-off | Air, Water |
| MULTI CUPLA MAM-B Type | 10 bar | 1/8 inch (8 and 12 port plates), 1/4 inch (6 and 8 port plates) | Two-way shut-off | Air, Water |
| MULTI CUPLA MAS Type / MAT Type and MALC-01 Type | 70 bar | MAS type 1/4 inch, 3/8 inch, 1/2 inch, 3/4 inch, 1 inch (R and Rc threads); MAT type M20, M24, M30, M39, M45 thread screw mount; MALC-01 type M14x1 thread screw mount or flange | Two-way shut-off for MAS type and MAT type; One-way shut-off for MALC-01 type | Air, Water, Hydraulic oil |
| MULTI CUPLA MAS Type / MAT Type | 70 bar | 1/4 inch, 3/8 inch, 1/2 inch, 3/4 inch, 1 inch (MAS type thread); M20, M24, M30, M39, M45 (MAT type thread) | Two-way shut-off | Air, Water, Hydraulic oil |
MAM-A Type suits air and water circuits up to 1.0 MPa {10 kgf/cm2} that are changed over by hand and need both sides to close: MAM Type is limited to 0.7 MPa {7 kgf/cm2} and shuts off on the socket side only. Above 1.0 MPa the choice moves to MAS Type / MAT Type at 7.0 MPa {71 kgf/cm2} or to MALC-HSP Type at 21.0 to 25.0 MPa {214 to 255 kgf/cm2}. Against MAM-B Type, which carries the same 1.0 MPa rating and the same two-way shut-off, decide by plate and port layout, noting that MAM-A-ZEL Type is not offered on MAM-B plates in size Rc 1/8.
Body and seal materials
| Body material |
|---|
| CUPLA: Brass (Nickel plated) |
| Plate: Aluminum alloy |
| Locking unit: Steel (Nickel plated) |
| Seal material | Mark | Working temperature | Remarks |
|---|---|---|---|
| Fluoro rubber (FKM), standard material | - | -20 °C to +180 °C | - |
Further catalogue data
| Note | Value |
|---|---|
| Number of ports | 4, 6, 8 or 12 depending on model |
| Pressure unit conversion | 1.0 MPa = 10 kgf/cm2 = 10 bar = 145 PSI |
| Ambient temperature range | 0 deg C to +60 deg C |
| Maximum tightening torque - MAM-A Type plate with CUPLA | 1/4 inch 9 {92}, 3/8 inch 12 {122}, 1/2 inch 30 {306} Nm {kgf - cm} |
| Maximum tightening torque - MAM-A-SP Type individual CUPLA | Rc 1/8 5 {51}, Rc 1/4 9 {92}, Rc 3/8 12 {122}, Rc 1/2 30 {306} Nm {kgf - cm} |
| Maximum tightening torque - MAM-A-ZEL Type individual CUPLA | Rc 1/4 9 {92}, Rc 3/8 12 {122}, Rc 1/2 30 {306} Nm {kgf - cm} |
| Minimum cross-sectional area per port (mm2) - MAM-A Type | 2SP type 26, 3SP type 51, 4SP type 73 |
| Minimum cross-sectional area per port (mm2) - MAM-A-SP Type | MAM-A-1S x MAM-A-1P 14, MAM-A-2S x MAM-A-2P 26, MAM-A-3S x MAM-A-3P 51, MAM-A-4S x MAM-A-4P 73 |
| Minimum cross-sectional area per port (mm2) - MAM-A-ZEL Type | MAM-A-ZEL-2S x MAM-A-ZEL-2P 31, MAM-A-ZEL-3S x MAM-A-ZEL-3P 60.5, MAM-A-ZEL-4S x MAM-A-ZEL-4P 86.5 |
| Admixture of air on connection per port (mL) - MAM-A Type | 2SP type 1.1, 3SP type 2.7, 4SP type 3.9. May vary depending upon the usage conditions. |
| Admixture of air on connection per port (mL) - MAM-A-SP Type | MAM-A-1S x MAM-A-1P 0.6, MAM-A-2S x MAM-A-2P 1.1, MAM-A-3S x MAM-A-3P 2.7, MAM-A-4S x MAM-A-4P 3.9. May vary depending upon the usage conditions. |
| Admixture of air on connection per port (mL) - MAM-A-ZEL Type | MAM-A-ZEL-2S x MAM-A-ZEL-2P 0.16, MAM-A-ZEL-3S x MAM-A-ZEL-3P 0.21, MAM-A-ZEL-4S x MAM-A-ZEL-4P 0.39. May vary depending upon the usage conditions. |
| Volume of spillage on disconnection per port (mL) - MAM-A Type | 2SP type 0.8, 3SP type 2.1, 4SP type 3.4. May vary depending upon the usage conditions. |
| Volume of spillage on disconnection per port (mL) - MAM-A-SP Type | MAM-A-1S x MAM-A-1P 0.4, MAM-A-2S x MAM-A-2P 0.8, MAM-A-3S x MAM-A-3P 2.1, MAM-A-4S x MAM-A-4P 3.4. May vary depending upon the usage conditions. |
| Volume of spillage on disconnection per port (mL) - MAM-A-ZEL Type | MAM-A-ZEL-2S x MAM-A-ZEL-2P 0.06, MAM-A-ZEL-3S x MAM-A-ZEL-3P 0.12, MAM-A-ZEL-4S x MAM-A-ZEL-4P 0.15. May vary depending upon the usage conditions. |
| Spillage comparison (6 ports of size 1/4 inch) | MAM-A-SP Type typical spillage 4.8 mL, MAM-A-ZEL Type low spillage 0.36 mL. May vary. Depends on the application. |
| Plate body material (plates without CUPLA) | Aluminum alloy |
| Plate ambient temperature range (plates without CUPLA) | 0 deg C to +60 deg C |
| Plate selection - size 1/8 inch | 8 ports MAM-B-1P8-CL / MAM-B-1S8-CL (see page 126), 12 ports MAM-B-1P12-CL / MAM-B-1S12-CL (see page 126) |
| Plate selection - size 1/4 inch | 6 ports MAM-A-2P6-CL / MAM-A-2S6-CL (see page 128) or MAM-B-2P6-CL / MAM-B-2S6-CL (see page 127), 8 ports MAM-B-2P8-CL / MAM-B-2S8-CL (see page 127), 12 ports MAM-A-2P12-CL / MAM-A-2S12-CL (see page 128) |
| Plate selection - size 3/8 inch | 6 ports MAM-A-3P6-CL / MAM-A-3S6-CL (see page 129), 12 ports MAM-A-3P12-CL / MAM-A-3S12-CL (see page 129) |
| Plate selection - size 1/2 inch | 4 ports MAM-A-4P4-CL / MAM-A-4S4-CL (see page 130), 8 ports MAM-A-4P8-CL / MAM-A-4S8-CL (see page 130) |
| Selection procedure | 1. Decide the type and size of CUPLA to be used. 2. Specify the required number of ports. 3. Select the plate. |
| Mounting rule | In order to balance the force of system pressure, place each CUPLA symmetrically from the lock unit centre. |
| Plates that can mount MAM-A-SP Type and MAM-A-ZEL Type | MAM-B Type (see page 115 to 117), MAM-B Type plate (see page 126 to 127), MAM-A Type (see page 119 to 122), MAM-A Type plate (see page 128 to 130). Excluding size Rc 1/8 for MAM-A-ZEL Type on MAM-B Type. |
| Made-to-order | Made-to-order MULTI CUPLA is available on request, such as a combination of different sizes on the flange plate. |
| Made-to-order valve options | Valve-less MAM-A-SP Type (plug and socket without valve) and one way valve MAM-A-ZEL Type (plug without valve) are available on request as made-to-order versions; in such case the model name ends with -VL (example: MAM-A-2P-VL, MAM-A-ZEL-2P-VL). |
| Flow rate | Flow rate - pressure loss characteristics charts per port of CUPLA on pages 120, 124 and 125 for the pairs MAM-A-2S x MAM-A-2P to MAM-A-4S x MAM-A-4P, MAM-A-1S x MAM-A-1P to MAM-A-4S x MAM-A-4P and MAM-A-ZEL-2S x MAM-A-ZEL-2P to MAM-A-ZEL-4S x MAM-A-ZEL-4P. Test conditions: fluid water, temperature 23 deg C. Chart range 1 to 100 L/min against 0.001 to 1.0 MPa {0.01 to 10 kgf/cm2} pressure loss. |
Interchangeability and size groups
No connection is possible between plates with different number of ports or different size. Individual CUPLA are interchangeable in the same size only; MAM-A-ZEL Type is not interchangeable with the MAM-A-SP Type. MAM-A-ZEL and MAM-A-SP Type can be mounted on the same plates: MAM-B Type (see page 115 to 117), MAM-B Type plate (see page 126 to 127), MAM-A Type (see page 119 to 122) and MAM-A Type plate (see page 128 to 130); for MAM-A-ZEL Type the MAM-B plates exclude size Rc 1/8. If CUPLA size is 1/4 inch and the number of ports is 6, either plate for MAM-A or MAM-B can be used; choose either one by the outer dimensions.
Safety and application notes
- Before use, please be sure to read the Safety Guide described at the end of the catalogue and the Instruction Sheet that comes with the products.
- MAM-A-ZEL Type: do not use in an environment where there is impulse pressure.
- In order to balance the force of system pressure, place each CUPLA symmetrically from the lock unit centre.
All technical data on this page is taken from the Nitto Kohki general catalogue Quick Connect Couplings C01en-b, page 119. The complete catalogue is available for download on this page.
