Quick connect coupling Lever Lock Cupla LD-8TSF, stainless steel - Nitto Kohki 516108500

Hose lines carrying water, compressed air, hydraulic oil or steam that are opened several times a shift lose time at every threaded joint. Lever Lock Cupla from Nitto Kohki joins plug and socket with a light pull on the lever and works at 0.7 to 1.8 MPa in sizes from 3/4 to 4 inch.

• Straight through valve-less body keeps the bore clear, which suits bulk flow duties at working pressures of 0.7 to 1.8 MPa
• End-face seal without steps or recesses in the fluid passage lets the medium pass the coupled pair without disturbance
• A special lip packing lowers the force needed at the lever, except on sizes 3/4 and 1 inch and on silicone or FEP-covered silicone seals
• Seal materials to match the temperature: NBR from -20 to +80 °C, EPDM and silicone from -40 to +150 °C, FKM from -20 to +180 °C
• Metal bodies in aluminium alloy, copper alloy or stainless steel, plastic bodies in polypropylene for water or air at 0.2 to 0.5 MPa
• Metal versions stay operational under vacuum down to 53.0 kPa while connected, plastic versions are not suitable for vacuum service

Technical data from the manufacturer catalogue

Dimensions

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

Legend: L = overall length; D = socket outside diameter; T = thread or barb size

Models in this series LEVER LOCK CUPLA

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

Operating principle

• This CUPLA complies with diversified applications in liquid or gas transportation.
• End-face seal structure enables no bumps or hollows on the internal fluid passage, and ensures smooth fluid transportation.
• A special lip packing (except sizes 3/4 inch and 1 inch, silicone rubber, and FEP-covered rubber) employed reduces the load to the lever for easy operation.
• Connection part dimensions comply with US military specifications MIL-A-A-59326 (MIL-C-27487).
• The variety of body materials, sizes and end configurations has been standardized to comply with wide range of applications.
• Additional stopper function design will enhance safety (only for made-to-order metal body product).
• Valve-less construction is good for applications that require high flow.
• A wide variety of seal materials are available for various fluids.

Series comparison

Choose LEVER LOCK CUPLA when the line is 3/4 inch or larger and the duty needs an unobstructed, valve-less passage; the sibling series of this category are rated 1.0 to 1.5 MPa {10 to 15 kgf/cm2} and all carry shut-off valves. The metal body version reaches 1.8 MPa {18 kgf/cm2} from 3/4 inch to 2 inch, above MICRO CUPLA, SMALL CUPLA, COMPACT CUPLA, CUBE CUPLA, SUPER CUPLA, HI CUPLA, HI CUPLA 200, FULL BLOW CUPLA, LINE CUPLA 200 and HI CUPLA ACE, while the plastic body version is limited to 0.5 MPa {5 kgf/cm2} or 0.2 MPa {2 kgf/cm2}. Where the line has to shut off on disconnection, one of the valved sibling series is the better choice; CUBE CUPLA also offers a straight through combination at 1.0 MPa {10 kgf/cm2}.

Body and seal materials

Applications

• Filling and emptying tanks and vessels with water or process liquids
• Compressed air distribution in workshops and production areas with frequent tool changes
• Hydraulic oil supply on machines where the line is disconnected on a regular basis
• Steam and hot water lines with the seal material chosen for the temperature
• Transfer of powder through hose lines

Compatibility

Sockets and plugs of the same size mate regardless of their end configuration, so a hose barb can be paired with a female or male thread end. Once coupled, fluid may flow from either the plug side or the socket side.

Standards and compliance

Connection part dimensions comply with US military specification MIL-A-A-59326.

Safety and application notes

• Note: Depending on the temperature of steam / hot water, the heat may damage seal materials.
• Designs and specifications are subject to change for improvement without notice.
• Before use, please be sure to read "Safety Guide" described at the end of this book and "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 77. The complete catalogue is available for download on this page.