Multi Cupla MALS/MALT
Multi couplings
The Nitto Kohki Multi Cupla MALS/MALT is a multi-circuit quick coupling in steel with FKM seals for simultaneous connection of several lines. The MALS (socket) and MALT (socket, T-design) series cover nominal sizes 2, 3, 4, and 6, each in HS (socket) and HP (plug) configurations. FKM seals make these couplings suitable for media more aggressive than standard compressed air, including chemical processes and elevated operating temperatures.
FKM seal - enhanced chemical resistance compared to standard NBR, for aggressive fluids
Steel construction - designed for continuous industrial loading
Nominal sizes 2, 3, 4, 6 - MALS and MALT each available in HS and HP
16 items - complete MALS/MALT pairings for all nominal sizes
Simultaneous multi-circuit connection - a single coupling operation establishes all connections
| Type | Design | Nominal size | Material | Seal |
|---|---|---|---|---|
| MALS-2HS | Socket | 2 | Steel | FKM |
| MALS-3HS | Socket | 3 | Steel | FKM |
| MALS-4HS | Socket | 4 | Steel | FKM |
| MALS-6HS | Socket | 6 | Steel | FKM |
| MALS-2HP | Plug | 2 | Steel | FKM |
| MALT-2HS | Socket T-type | 2 | Steel | FKM |
| MALT-3HS | Socket T-type | 3 | Steel | FKM |
Typical applications: Multi-circuit pneumatic supply in chemical and petrochemical industries, connection of lines handling elevated temperatures or aggressive media, tool-change systems in production equipment with high thermal loading, and any application where FKM elastomers are required over NBR.
Technical data from the manufacturer catalogue
| Series | MULTI CUPLA MAS Type / MAT Type and MALC-01 Type |
|---|---|
| Body material | Stainless steel (Nickel plated) - MAS type and MAT type, Socket: Brass (Nickel plated) - MALC-01 type, Plug: Brass (Nickel plated) - MALC-01 type |
| Seal material | FKM (Fluoro rubber), NBR (Nitrile rubber) |
| Max working pressure | 7.0 MPa {71 kgf/cm2} for MAS type and MAT type; 1.0 MPa {10 kgf/cm2} for MALC-01 type |
| Working temperature | FKM (Fluoro rubber), MAS type and MAT type: -20 °C to +180 °C | NBR (Nitrile rubber), MALC-01 type: -20 °C to +80 °C |
| Valve structure | Two-way shut-off for MAS type and MAT type; One-way shut-off for MALC-01 type |
| Applicable fluids | Air, Water, Hydraulic oil |
| Vacuum service | MAS type and MAT type: suitability for vacuum 1.3x10-1 Pa {1x10-3 mmHg}, socket only -, plug only -, when connected Operational. MALC-01 type: not suitable for vacuum application in either connected or disconnected condition. |
| Size range | 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 |
| Catalogue page | C01en-b, 131 |
Operating principle
- Connects multiple lines simultaneously with a single operation for different fluids and sizes.
- Effective for automated systems that connect/disconnect multiple lines simultaneously using hydraulic or pneumatic cylinders.
- Automatic shut-off valves in both sockets and plugs ensure no outflow of fluid on disconnection.
- Body materials other than stainless steel are available, which can be ordered with or without valves (made-to-order products).
- Snap ring and screw thread-in types to mount on the base plate are standardized.
- MAS type can accept axial eccentricity between socket and plug. The allowance of eccentricity is within the radius range of 0.3 mm.
- MALC-01 type: One-way shut-off type for low pressure use.
- MALC-01 type: Solo use of socket is possible.
All models of the series
MAS-P - MAS type (With snap ring)
| Model | Coupling part | Application | Stainless steel (g) | T | øD1 | øD2 | øH(WAF) | øL1 | øL2 |
|---|---|---|---|---|---|---|---|---|---|
| MAS-2P | Plug | R 1/4 thread | 150 | Rc 1/4 | 28 | 21.9 | Hex.26 | 65 | 14 |
| MAS-3P | Plug | R 3/8 thread | 203 | Rc 3/8 | 35 | 25.9 | Hex.32 | 67 | 16 |
| MAS-4P | Plug | R 1/2 thread | 412 | Rc 1/2 | 44 | 35.9 | Hex.41 | 73 | 20 |
| MAS-6P | Plug | R 3/4 thread | 579 | Rc 3/4 | 50 | 41.9 | Hex.46 | 76.5 | 23.5 |
| MAS-8P | Plug | R1 thread | 720 | Rc 1 | 58 | 47.9 | Hex.54 | 78 | 24 |
MAS-S - MAS type (With snap ring)
| Model | Coupling part | Application | Stainless steel (g) | L | T | øD1 | øD2 | øH(WAF) |
|---|---|---|---|---|---|---|---|---|
| MAS-2S | Socket | R 1/4 thread | 126 | 51.5 | Rc 1/4 | 28 | 21.9 | Hex.26 |
| MAS-3S | Socket | R 3/8 thread | 171 | 55 | Rc 3/8 | 35 | 25.9 | Hex.32 |
| MAS-4S | Socket | R 1/2 thread | 406 | 65 | Rc 1/2 | 44 | 35.9 | Hex.41 |
| MAS-6S | Socket | R 3/4 thread | 604 | 76 | Rc 3/4 | 50 | 41.9 | Hex.46 |
| MAS-8S | Socket | R1 thread | 825 | 87 | Rc 1 | 58 | 47.9 | Hex.54 |
MAT-P - MAT type (Thread screw mount)
| Model | Coupling part | Application | Stainless steel (g) | T | øD1 | øD2 | øH(WAF) | øL1 | øL2 | øL3 |
|---|---|---|---|---|---|---|---|---|---|---|
| MAT-2P | Plug | See drawings below. | 121 | M20x1.5 | 28 | 21.9 | Hex.26 | 53 | 14 | (24) |
| MAT-3P | Plug | See drawings below. | 164 | M24x1.5 | 32 | 25.9 | Hex.29 | 56 | 16 | (25) |
| MAT-4P | Plug | See drawings below. | 332 | M30x2 | 44 | 35.9 | Hex.41 | 67 | 20 | (32) |
| MAT-6P | Plug | See drawings below. | 453 | M39x2 | 50 | 41.9 | Hex.46 | 73 | 23.5 | (34.5) |
| MAT-8P | Plug | See drawings below. | 571 | M45x2 | 54 | 47.9 | Hex.50 | 76 | 24 | (37) |
MAT-S - MAT type (Thread screw mount)
| Model | Coupling part | Application | Stainless steel (g) | T | øD1 | øD2 | øH(WAF) | øL1 | øL2 |
|---|---|---|---|---|---|---|---|---|---|
| MAT-2S | Socket | See drawings below. | 95 | M20x1.5 | 28 | 21.9 | Hex.26 | 39 | (24) |
| MAT-3S | Socket | See drawings below. | 124 | M24x1.5 | 32 | 25.9 | Hex.29 | 42 | (27) |
| MAT-4S | Socket | See drawings below. | 246 | M30x2 | 44 | 35.9 | Hex.41 | 48 | (33) |
| MAT-6S | Socket | See drawings below. | 382 | M39x2 | 50 | 41.9 | Hex.46 | 58 | (43) |
| MAT-8S | Socket | See drawings below. | 506 | M45x2 | 54 | 47.9 | Hex.50 | 66 | (51) |
MALC-01TP - MALC-01TP type (Thread screw mount)
| Model | Coupling part | Application | Brass (g) | øD | T | øB | øH(WAF) | øL1 | øL2 | øL3 |
|---|---|---|---|---|---|---|---|---|---|---|
| MALC-01TP | Plug | See drawings below. | 40 | 18.5 | M14x1 | 6 | Hex.17 | 28 | (14) | 14 |
MALC-01S - MALC-01S type (Thread screw mount)
| Model | Coupling part | Application | Brass (g) | øD | T | øH(WAF) | øL1 | øL2 | øL3 |
|---|---|---|---|---|---|---|---|---|---|
| MALC-01S | Socket | See drawings below. | 39 | 18.5 | M14x1 | Hex.17 | (41) | (20.5) | 16 |
MALC-01TP-FL - MALC-01TP-FL type (With flange)
| Model | Coupling part | Application | Brass (g) | H | øD | A | øB | øL1 | øL2 | øL3 | øL4 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| MALC-01TP-FL | Plug | See drawings below. | 52 | 36 | (22) | 120 deg | 6 | 28 | (14) | 14 | 3.2 |
MALC-01S-FL - MALC-01S-FL type (With flange)
| Model | Coupling part | Application | Brass (g) | H | øD | A | øL1 | øL2 | øL3 | øL4 |
|---|---|---|---|---|---|---|---|---|---|---|
| MALC-01S-FL | Socket | See drawings below. | 51 | 36 | (22) | 120 deg | (41) | (20.5) | 16 | 3.2 |
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 |
These pages are the right reference when a multi-port plate has to work at 7.0 MPa {71 kgf/cm2} with two-way shut-off in socket and plug, which the MAM, MAM-A and MAM-B types at 0.7 to 1.0 MPa do not reach, or when a low pressure plate at 1.0 MPa {10 kgf/cm2} may be one-way shut-off, as with the MALC-01 type. In that low pressure case, MALC-01 is preferable to MAM-A and MAM-B at the same 1.0 MPa where the socket has to be usable on its own and where the 2 mm axial eccentricity allowance avoids precise centering. Above 7.0 MPa the MALC-HSP type at 21.0 to 25.0 MPa {214 to 255 kgf/cm2} takes over; it is listed with two-way shut-off and spill reduction, which these pages do not cover.
Body and seal materials
| Body material |
|---|
| Stainless steel (Nickel plated) - MAS type and MAT type |
| Socket: Brass (Nickel plated) - MALC-01 type |
| Plug: Brass (Nickel plated) - MALC-01 type |
| Seal material | Mark | Working temperature | Remarks |
|---|---|---|---|
| FKM (Fluoro rubber), MAS type and MAT type | - | -20 °C to +180 °C | - |
| NBR (Nitrile rubber), MALC-01 type | - | -20 °C to +80 °C | - |
Further catalogue data
| Note | Value |
|---|---|
| Working pressure by unit, MAS type and MAT type | 7.0 MPa / 71 kgf/cm2 / 70 bar / 1020 PSI |
| Working pressure by unit, MALC-01 type | 1.0 MPa / 10 kgf/cm2 / 10 bar / 145 PSI |
| Maximum tightening torque, MAS type | 1/4 inch 14 {143}, 3/8 inch 22 {224}, 1/2 inch 60 {612}, 3/4 inch 90 {918}, 1 inch 120 {1224} Nm {kgf cm} |
| Maximum tightening torque, MAT type | M20 50 {510}, M24 50 {510}, M30 50 {510}, M39 70 {714}, M45 80 {816} Nm {kgf cm} |
| Maximum tightening torque, MALC-01 type | Thread screw mount 15 {153}, Flange 1.5 {15} Nm {kgf cm} |
| Minimum cross-sectional area, MAS type and MAT type | 2SP 23, 3SP 41, 4SP 76, 6SP 145, 8SP 224 mm2 |
| Minimum cross-sectional area, MALC-01 type | 28 mm2 |
| Admixture of air on connection, volume of air, MAS type and MAT type | 2SP 1.1, 3SP 2.4, 4SP 3.2, 6SP 10.5, 8SP 17.0 mL |
| Maximum acceptable load, MAS type and MAT type | 2SP 3200 {327}, 3SP 5200 {531}, 4SP 9200 {939}, 6SP 13900 {1419}, 8SP 20200 {2062} N {kgf} |
| Minimum load required to maintain connection, MAS type and MAT type | 2SP Px185+45 {px1.85+4.5}, 3SP Px310+70 {px3.1+7}, 4SP Px545+85 {px5.45+8.5}, 6SP Px850+95 {px8.5+9.5}, 8SP Px1225+120 {px12.25+12} N {kgf} |
| Load required to maintain connection when line is pressurized, MALC-01 type | F = (P x 160) + 50 { f = p x 1.6 + 5 }, where F [N] {f [kgf]} is the minimum load required to maintain connection and P [MPa] {p [kgf/cm2]} is the actual value of pressure. However, the maximum acceptable load is 500 N {51 kgf}. |
| Acceptable distance between CUPLA, MALC-01 type | 0 to 0.5 mm. Socket and plug or plate must be used in contact with each other. Maximum 0.5 mm distance between socket and plug or plate is acceptable. |
| Mounting dimensions, MAS type | MAS-2S / MAS-2P D 23; MAS-3S / MAS-3P D 27; MAS-4S / MAS-4P D 37; MAS-6S / MAS-6P D 43; MAS-8S / MAS-8P D 49. Mounting drawing gives 15 -0.1/0 or 30 -0.1/0 and D +0.1/0, R1; mount MAS tail end from this side. |
| Mounting dimensions, MAT type | MAT-2S / MAT-2P A 22 +0.06/0, G 13, F 25, T M20x1.5; MAT-3S / MAT-3P A 26 +0.06/0, G 13, F plug 26 socket 28, T M24x1.5; MAT-4S / MAT-4P A 36 +0.08/0, G 16, F plug 34 socket 35, T M30x2; MAT-6S / MAT-6P A 42 +0.08/0, G 17, F plug 36.5 socket 45, T M39x2; MAT-8S / MAT-8P A 48 +0.08/0, G 17, F plug 39 socket 53, T M45x2. The F value 25 of MAT-2S / MAT-2P is printed in one cell spanning the plug and socket columns. |
| Mounting dimensions, MALC-01TP / 01S type (thread screw mount) | MALC-01S: D1 15.8 +0.05/0, D2 14.8 +0.05/0, L1 3, L2 7.5 +0.2/0, L3 16, L4 25, T M14x1; MALC-01TP: L4 18 |
| Mounting dimensions, MALC-01TP-FL / 01S-FL type (with flange) | MALC-01S-FL: D1 PCD28, D2 20, D3 16, D4 14.8 +0.05/0, L1 2.5 +0.1/0, L2 25, T 2xM4x0.7 thread depth 10 mm or more; MALC-01TP-FL: L2 16 |
| Solo use of socket, MALC-01 type | The shape of counterpart for solo use of socket: ø21 or more, ø6, C0.2 or less, 1.6. The angle of inclination between the socket and counterpart must be within 0.5 degrees. Distance between plates is 16 mm for solo use of socket. |
| Flow direction, MAS type and MAT type | Fluid flow can be bi-directional when socket and plug are connected. |
| Flow rate | MAS type / MAT type: flow rate - pressure loss characteristics diagram is printed for MAS-2S x MAT-2P, MAS-3S x MAT-3P, MAS-4S x MAT-4P, MAS-6S x MAT-6P and MAS-8S x MAT-8P (flow rate 1 to 1000 L/min, pressure loss 0.01 to 1.0 MPa {0.1 to 10 kgf/cm2}); test conditions fluid water, temperature 23 deg C +/-5 deg C. MALC-01 type: pressure - flow characteristics diagram is printed for MALC-01S x MALC-01TP (flow rate 0 to 2.5 m3/min (ANR) against pressure 0 to 0.7 MPa {0 to 7 kgf/cm2}); test condition fluid air. |
Interchangeability and size groups
MAS type and MAT type: MAS & MAT or MAS & MAS types of the same size are to be connected. Connection between the same MAT types is virtually not possible because there is no allowance for eccentricity. MAT type must be coupled with MAS type. MALC-01 type: Sockets and plugs can be connected regardless of end configurations. Not interchangeable with MALC-SP Type (for medium pressure use) MALC-1SP or MALC-HSP Type (for high pressure use) MALC-1HSP.
Safety and application notes
- CUPLA connection or disconnection with fluid under dynamic pressure cannot be made.
- MALC-01 type: Socket and plug or plate must be used in contact with each other. Maximum 0.5 mm distance between socket and plug or plate is acceptable.
- MALC-01 type, solo use of socket: The angle of inclination between the socket and counterpart must be within 0.5 degrees.
- Before use, please be sure to read the Safety Guide described at the end of this book and the Instruction Sheet that comes with the products.
All technical data on this page is taken from the Nitto Kohki general catalogue Quick Connect Couplings C01en-b, page 131. The complete catalogue is available for download on this page.
