Quick connect coupling Multi Cupla MALC-3HP, steel - Nitto Kohki 369824180

On machines and test rigs, lines are disconnected and reconnected several times a day. The Multi Cupla series from Nitto Kohki covers that job with 120 versions in brass, steel or stainless steel, each available as a socket and as the matching plug.

• Bodies in brass, steel or stainless steel (SUS), so the coupling suits the environment at the installation point.
• Seals in NBR or FKM, which lets the material pairing be matched to the medium being carried.
• Every socket has a plug of the same size, for example MALC-4S and MALC-4P, which keeps spare part stocking simple.
• Sizes 01, 1, 2, 3, 4, 6 and 8 within the same model line, so different port sizes stay inside one coupling system.
• 120 articles in a single series, from the individual coupling to the MAM, MALC, MALS, MALT, MAS and MAT versions.

Technical data from the manufacturer catalogue

Dimensions

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

Legend: T = thread or barb size

Models in this series MULTI CUPLA MALC Type

Every model of the series as printed in the manufacturer catalogue. The row of the article offered here is highlighted.

Operating principle

• MALC-01 Type: Solo use of socket is possible.
• MALC-01 Type: As in the case of MULTI CUPLA MALC-SP type and MALC-HSP type, the distance between the socket plate and the plug plate is designed to be 30 mm when connected. This means MULTI CUPLA MALC-01 type can also be installed mixed with any size of MALC-SP type and MALC-HSP type on the same plate.
• MALC-01 Type: An axial eccentricity allowance of 2 mm eliminates precise centering at installation.
• MALC-01 Type: Compact size with thread screw mount and with flange types available.
• MALC-01 Type: Suitable for operation of ejector pins to open/close valve gates in molding.
• MALC-SP Type: Compared with conventional MULTI CUPLA, approximately double flow rates are realized. This could reduce the size of required plates. (Rate of flow increase depends on CUPLA sizes.)
• MALC-SP Type: The MALC type realizes a 2 mm axial eccentricity allowance, while conventional MULTI CUPLA is only 0.6 mm.
• MALC-SP Type: Special valve design enables connection of socket and plug under pressure of up to 2 MPa. (up to 1.5 MPa for MALC-12SP.)

Series comparison

MULTI CUPLA MALC is the choice as soon as the pressure class exceeds what the other MULTI CUPLA plates cover: MAM Type ends at 0.7 MPa {7 kgf/cm2}, MAM-A Type and MAM-B Type at 1.0 MPa {10 kgf/cm2} and MAS Type / MAT Type at 7.0 MPa {71 kgf/cm2}, while MALC-SP Type covers 1.5 to 7.0 MPa {15 to 71 kgf/cm2} and MALC-HSP Type 21.0 to 25.0 MPa {214 to 255 kgf/cm2}. Within the range MALC-SP Type and MALC-HSP Type shut off on both sides with spill reduction, so they fit lines where outflow of fluid and air admixture matter, whereas MALC-01 Type at 1.0 MPa {10 kgf/cm2} is one-way shut-off like MAM Type. A further reason for MALC is mixed assembly: the 30 mm plate distance is the same for all three sub-types and all sizes, so one plate can carry different sizes and pressure classes.

Body and seal materials

Applications

• Tool and fixture changes where lines are disconnected on a regular basis
• Test and measuring benches with changing setups
• Plant modules that are uncoupled quickly for service and rebuilds
• Installation points in corrosive surroundings, which is what the stainless steel (SUS) versions are intended for

Safety and application notes

• 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-SP Type and MALC-HSP Type: plug and socket must be used in contact with each other. Maximum 0.5 mm distance between socket and plug is acceptable.
• For solo use of the MALC-01 socket, the angle of inclination between the socket and the counterpart must be within 0.5 degrees.
• Maintain the connection with the minimum load or more, but not more than the maximum acceptable load. For MALC-01 Type the maximum acceptable load is 500 N {51 kgf}.
• 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 133. The complete catalogue is available for download on this page.