Quick connect coupling Hyper HSP Cupla 8HS-PV, steel - Nitto Kohki 366108100

Residual pressure in a hydraulic line costs time before every connection because it has to be bled off first. Hyper HSP Cupla connects under residual pressure of up to 20.6 MPa, since a purge valve releases the pressure trapped in the plug while the pair is being coupled.

• Connects under residual pressure up to 20.6 MPa, so the usual bleeding step before coupling is no longer needed.
• The purge valve at the plug valve is depressed during connection and releases the residual pressure, which keeps the connection load low, for example 85 N on 4HP-PV at 10.0 MPa residual pressure.
• Automatic shut-off valves in both socket and plug prevent hydraulic oil from spilling out on disconnection.
• Nickel-plated special steel body in port sizes 1/4 inch to 1 inch, maximum tightening torque from 28 Nm to 180 Nm.
• Minimum cross-sectional area from 21 mm2 on 2HP-PV up to 203 mm2 on 8HP-PV, and once coupled the fluid may flow in either direction.
• Air admixture on connection of 0.7 mL on 2HP-PV up to 12.4 mL on 8HP-PV, which keeps the air carried into the oil circuit small.

Technical data from the manufacturer catalogue

Dimensions

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; T = thread or barb size

Models in this series HYPER HSP CUPLA

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

Operating principle

• Connects hydraulic piping even with residual pressure up to 20.6 MPa {210 kgf/cm2}.
• Purge function will set you free from the troublesome residual pressure elimination before connection and let you achieve efficient and frequent hydraulic pipe line coupling.
• Both socket and plug have built-in automatic shut-off valves to prevent fluid spill out when disconnected.
• Interchangeable with standard HSP CUPLA plug or socket in the same size.
• When connecting, the purge valve positioned at the point of plug valve is depressed to release the residual pressure in plug.
• Residual pressure release (or purge) mechanism: while connecting, the purge valve indicated with a circle is being pushed and releasing the residual pressure.

Series comparison

Pick HYPER HSP CUPLA when a line carrying residual pressure of up to 20.6 MPa {210 kgf/cm2} has to be coupled: HSP CUPLA, 210 CUPLA, S210 CUPLA and HSU CUPLA sit in the same pressure class with the same two-way shut-off, so the choice turns on whether that pressure has to be released at the moment of connection. One HYPER HSP CUPLA part is always paired with a standard HSP CUPLA socket or plug of the same size, which keeps it inside an existing HSP installation. Above 20.6 MPa {210 kgf/cm2} the higher rated 280 CUPLA, 350 CUPLA, 450B CUPLA and 700R CUPLA apply instead.

Body and seal materials

Applications

• Hydraulic lines on power units that hold residual pressure after shutdown
• Frequently changed connections on hydraulic clamping and pressing equipment
• Tool and cylinder changes where no separate pressure release step is wanted
• Test rigs running hydraulic oil up to 20.6 MPa
• Vacuum service down to 1.3 x 10-1 Pa, released for the coupled pair only

Compatibility

Hyper HSP Cupla sockets and plugs are interchangeable with standard HSP Cupla plugs and sockets of the same size. The Hyper HSP part must always sit on the line that holds the residual pressure and the counterpart is a standard HSP Cupla part. Coupling is allowed under residual pressure but not while the line is being pressurized, otherwise incomplete connection, reduced durability or valve fly out may result.

Safety and application notes

• Note: Either socket or plug of HYPER HSP CUPLA must be used on the line where the residual pressure remains. The counterpart of HYPER HSP must be either plug or socket of standard HSP CUPLA.
• HYPER HSP CUPLA can be connected under the residual pressure in the line, but cannot during pressurizing. It may lead to incomplete connection, durability deterioration or possible valve fly out.
• Precautions for use: There is no interchangeability between HSP CUPLA and 210 CUPLA, 280 CUPLA or 450B CUPLA. Do not connect to each other even if sizes are similar.
• 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 95. The complete catalogue is available for download on this page.