Purge adapter Purge Adapter PAD-3, steel - Nitto Kohki 599865103

When an air coupling is parted under residual pressure, the air escapes at once and the hose whips back. The PAD purge adapter is fitted at the parting point and releases that residual pressure in a controlled way.

• Residual pressure on the plug side is released in a controlled way, which removes the loud discharge and the hose whip
• Steel body keeps its shape at a parting point that is used every day
• Seal in nitrile rubber (NBR), the standard material for compressed air lines
• Fits as an intermediate piece, the existing coupling stays in the line
• Two sizes, PAD-2 and PAD-3, to match the connection already in place

Technical data from the manufacturer catalogue

Dimensions

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

Legend: D = socket outside diameter; B = bore

Models in this series In-Line PURGE ADAPTER

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

Operating principle

• Can be attached to hydraulic lines to purge residual pressure effectively.
• Can be operated with a screwdriver if the button is stiff. Insert an ordinary flat head screwdriver into the groove in the valve holder and press the button by leverage.
• Residual pressure is purged through a drain outlet port by pushing the residual pressure purge button.
• PAD-2 comes with a tube fitting included; PAD-FM types are supplied without tube fittings.
• FLOW METER: graduated scale shows the coolant flow rate numerically, thus reducing operator variation in setting cooling conditions.
• FLOW METER: although small, it has a built-in flow rate adjustment valve, allowing the molding conditions of each machine to be set freely.
• FLOW METER: molding conditions are reproducible and lead time can be shortened.
• FLOW METER: installation and replacement is easy since the screw part of the T2 side rotates freely to the left and right.

Series comparison

Use the In-Line PURGE ADAPTER when residual pressure has to be released from a hydraulic line at up to 35.0 MPa {357 kgf/cm2} before the coupling is separated, since it is fitted into the line itself and does not replace the coupling. The purging peer series in this category, PURGE HI CUPLA at 1.5 MPa {15 kgf/cm2} and PURGE LINE CUPLA at 1.0 MPa {10 kgf/cm2}, are couplings for the low pressure range and do not reach this pressure level. Where the line only has to be connected and shut off, the one-way shut-off peers such as HI CUPLA BL, NUT CUPLA or LOCK CUPLA 200, or the two-way shut-off COMPACT ZEROSPILL CUPLA, are the appropriate choice.

Body and seal materials

Applications

• Workstations where the hose line is parted several times a day
• Areas where the discharge noise on disconnection disturbs the work
• Line ends where a whipping hose could strike people or parts
• Retrofitting existing coupling points without reworking the line

Safety and application notes

• When ordering, please indicate Model Name or part number.
• Semi standard items: as these items are not always in stock, delivery time is subject to confirmation.
• Not suitable for vacuum application.
• The operable temperature range depends on the operating conditions.
• FLOW METER: plastic part (scale tube) cannot be replaced.
• FLOW METER: fluid must flow in the direction of the arrows.

All technical data on this page is taken from the Nitto Kohki general catalogue Quick Connect Couplings C01en-b, page 168. The complete catalogue is available for download on this page.