Quick connect coupling Nut Cupla 200-65SNG, steel - Nitto Kohki 317406700

On an air line every second lost during a tool change counts. Nut Cupla runs at 1.5 MPa working pressure with one-way shut-off in the socket, and the 200 series versions are coupled by simply pushing the plug in.

• Working pressure of 1.5 MPa (15 kgf/cm2) for compressed air, with a chrome-plated steel body.
• One-way shut-off with the valve in the socket, which is why the fluid has to run from socket to plug.
• The 200 series versions connect without pulling back the sleeve, which cuts connection time.
• A revised valve design lowers pressure loss and raises flow rate by 15 percent over the previous model.
• End-face seal when coupled instead of an external O-ring, so exhausted lubrication cannot damage the seal.
• Nitrile rubber NBR seal for -20 to +60 °C, intended for air rather than water or oil.

Technical data from the manufacturer catalogue

Dimensions

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

Legend: L = overall length; A = hose barb length

Models in this series NUT CUPLA / NUT CUPLA 200 / ROTARY NUT CUPLA / HI CUPLA for Connection to Braided Hoses

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

Operating principle

• For connection to urethane hose, braided hose.
• No hose clamp required.
• Fitted with hose guard nut to prevent possible kinking.
• HI CUPLA for connection to braided hoses is now available.
• Nut types are available in HI CUPLA Series and HI CUPLA 200 Series.
• Hose guard nut type available to prevent hose kinking.
• To mount on hose, simply slide it over the nipple and tighten the nut.
• The design to tighten outside of hose reduces hose slip away or fluid leaks.

Series comparison

NUT CUPLA is the choice where the coupling sits on urethane or braided hose and the hose has to be held by a threaded nut rather than a hose clamp; the other one-way shut-off series in this group at 1.5 MPa {15 kgf/cm2}, such as HI CUPLA BL, LOCK CUPLA 200, ROTARY LINE CUPLA and ROTARY PLUG, are selected for their locking or swivel function rather than for the hose mounting. The hose guard nut versions (PNG, 200-SNG) add protection against kinking, and ROTARY NUT CUPLA combines the nut mounting with a ball bearing swivel mechanism. If spill on disconnection is the deciding point, COMPACT ZEROSPILL CUPLA at 1.0 MPa {10 kgf/cm2} is two-way shut-off, while NUT CUPLA is one-way shut-off and requires flow from socket to plug.

Body and seal materials

Applications

• Compressed air lines in production and assembly
• Connecting pneumatic tools that are changed often
• Miniature pneumatic equipment and automatic control equipment
• Physicochemical equipment and laboratory rigs
• Air supply on medical devices

Compatibility

The coupling is interchangeable with Hi Cupla models 20, 30 and 40 and with the corresponding models of the Hi Cupla series. Fluid must run from socket to plug, and the range is not suitable for vacuum service in either the connected or the disconnected condition.

Standards and compliance

Thread ends are supplied in 1/4, 3/8 and 1/2 inch as R male and Rc female threads, maximum tightening torques are 14 Nm, 22 Nm and 60 Nm, and the materials used are chrome-plated steel and nitrile rubber (NBR).

Safety and application notes

• 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.
• Not suitable for vacuum application in either connected or disconnected condition.
• Fluid must run from socket to plug.
• Grease is applied to the threaded part of the steel nut and of the stainless steel nut to prevent galling.

All technical data on this page is taken from the Nitto Kohki general catalogue Quick Connect Couplings C01en-b, page 45. The complete catalogue is available for download on this page.