Unilok Tube Fittings and Tube Fitting Adapters

Unilok tube fittings provide leak-tight and remakeable connections in process and analytical instrumentation, control systems, and pneumatic and hydraulic applications.

Unilok Specifications
Types	Unilok Tube Fittings
Sizes	Fractional: 1/16 to 1 in.
Maximum Operating Pressure	12,000 psig (825 bar) @ 100° F (38° C)
Temperature Range	-325° F to 1200° F (-198° to 648° C)
Materials	Stainless steel, carbon steel, brass, monel. Other materials are available on request.
Connections	Tube fittings, NPT, ISO/BSP, SAE/MS, AN, weld ends, port connectors, tube adapters
Configurations	Straights, elbows, tees, crosses, caps, plugs
Special Tube Fittings	Bore-through/heat exchanger, dielectric, calibration, bulkhead, tube inserts

Interchange and Intermix

Unilok tube fittings are designed, manufactured, quality controlled and distributed to be totally “interchangeable”with the Parker CPI® brand of tube fittings. Component by component examination plainly shows the two brands as completely “component-intermixable". The precision manufacturing of both products to stringent tolerances under rigid quality control procedures ensures the safety, performance and reliability of service whenever Parker CPI Fittings and Griplok component parts are mixed and used in accordance with published installation and service.

Unilok Technology

To provide a reliable, leak-proof connection in instrumentation and process tubing systems, Unilok tube fittings consist of three precision-machined components: body, ferrule, and nut.The single ferrule design, with the spring-like action of the ferrule during make-up, compensates for the variation in tubing materials, hardness, and thickness of the tube wall to provide leak-tight connections in an extensive range of applications.

Through the critical interaction of the precisely machined fitting components with the process tube, a leak-tight seal is achieved. The simple geometric rotation of the Unilok nut provides the axial thrust necessary to coin the ferrule to the outsid Unilok Tube Fittings parts illustration e diameter of the tube. To eliminate any potential stress on an existing system, the they have been designed to not transmit installation torque from the tube fittings to the tubing.

During the rotary movement of the nut, the internal surface of the nut meets with the rear surface of the ferrule to axially move the ferrule forward into the angular section of the fitting body. The leading edge of the ferrule is directed into the tube to begin the required “bowing” action of the ferrule.

Subsequently, the leading edge of the ferrule “locks” on the outside diameter of the tube to complete the sealing action and secure the tube within the fitting.The resulting “spring-like action” of the ferrule is designed to help compensate for exposure to system variables such as vibration.

Materials

Unilok tube fitting straight configuration are machined from type 316 stainless steel cold-finished bar stock in accordance with ASTM A-276 and ASTM A-479. Tube fitting shapes, elbows, tees and crosses, are machined from close-grained 316 stainless steel forgings in accordance with ASTM A-182. All 316 stainless steel. Unilok components are heat code traceable with certified material test reports (CMTRs) are available. More information about materials.

Quality Certification

Unilok tube fittings are manufactured in accordance with SSP's Quality System , which has been certified to conform to the ISO 9001:2000 Quality Standard. In addition, all Unilok tube fittings are manufactured to the technical design specifications and rigid quality control standards of the SSP Instrumentation Division. SSP's continuing commitment to quality is reflected throughout the company in its personnel, policies, equipment, products and service.

Approvals and Test Reports

Unilok tube fittings have been tested and/or approved in accordance with the standards of following organizations:

• American Bureau of Shipping
• Unilok Tube Fitting Interchange and Intermix Test Report
• CSA Report
• Unilok Technical Report

Packaging

Unilok tube fittings are individually bagged to assure the highest levels of quality, safety and cleanliness. The protective bags eliminate contamination (tubing burrs, dirt, etc.) from entering the fitting prior to its use, and help to retain the integrity of the factory assembled body, nut, and ferrules.

As long as a Unilok tube fitting is in its original protective bag, it is identified as "factory new," completely assembled and ready for installation. The individually bagged Unilok tube fittings are packaged in convenient, small-lot quantities for easy procurement and material of construction and have pictorial labels which include the part number, product installation instructions.

Installation

Unilok tube fittings are designed for easy installations using hand tools or automatic installers such as the Turn Pro automatic swaging tool. More about Unilok Installation Instructions.

Installation Training

Property tube fitting make-up and assembly are critical in providing leak-tight performance. SSP and SSP distributors provide extensive installation training. Related training courses cover tube fitting and tubing installation and the proper use of tools, cutting and preparing tubing, and tube bending.

Tools and Accessories

SSP offers tools and accessories to support tube fitting assembly and installation and the tubing cutting, preparations and bending. More about tool and accessories.