Griplok Tube Fittings and Tube Fitting Adapters

Griplok® stainless steel tube fittings use a double-ferrule design to create leak-tight performance in analytical and process instrumentation applications where leak-tight performance can have a significant impact on quality, productivity and cost. In addition to stainless steel, They are available in brass, Monel®, and Hastalloy-C®.  

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Select Griplok Tube Fittings

Griplok Catalog

Tube Pressure Rating Tables 

Tube Temperature Rating Tables 

Griplok Warranty

Tube Fitting Safety 

Intermix and Interchangeability

Griplok tube fittings are designed, manufactured, quality controlled and distributed to be totally “interchangeable”with the Hoke® Gyrolok® 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 Gyrolok and Griplok component parts are mixed and used in accordance with published installation and service.

Griplok Technology

Griplok tube fittings use a two-ferrule design with sophisticated geometry, precise machining, unsurpassed material quality, to provide a leak-tight remakeable seals even in applications having high vibration and extreme temperature changes. This leak tight seal and gripping action is the result of the sequential interaction of the nut, the front and back ferruls, the  body, and the tubing.

1. The tube fitting nut advances the rear ferrule toward the front ferrule.

2. As the rear ferrule begins to drive the front ferrule, the rear ferrule and front ferrule interact tilting the rear ferrule forward and forcing the leading edge of the rear ferrule inward to slightly deform the tubing in order to lock onto the tubing. This gripping action prevents overstressing the tubing, which can cause tubing failure and possible injury.

3. As the rear ferrule drives the font ferrule forward, the outside diameter of the front ferrule comes in contact with the tapered inside diameter of the tube fitting. This interaction polishes the outside surface of the front ferrule and the inside surface of the body forming a leak-tight seal. At the same time the front edge of the ferrule is driven onto the tubing, slightly deforming the tubing in order to grip the tubing and create a leak-tight seal between the the ferrule and the tubing. The gripping action enables Griplok tube fittings to maintain a reliable seal in high-pressure and high vibration applications.

4. As the ferrule grips the tubing, the nut is able to drive the tubing forward to form a secondary seal as the end of the tubing is driven against the base of the tube socket. This secondary seal enables Griplok tube fittings to better compensate for scratches and other tubing variations. A slight taper in the tube socket shoulder reduces tube sticking on disassembly and supports remakeability.

Materials

Griplok 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. Elbows, tees and crosses, are machined from close-grained 316 stainless steel forgings in accordance with ASTM A-182. All 316 stainless steel. Griplok tube fitting components are heat code traceable with certified material test reports (CMTRs) are available. More information about Griplok materials.

Packaging

Griplok 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 Griplok tube fitting is in its original protective bag, it is identified as "factory new," completely assembled and ready for installation. The individually baggedtube fittings are packaged in convenient, small-lot quantities for easy procurement and handling. Additionally, for efficient product identification and storage, the boxes are color-coded to the material of construction and have pictorial labels which include the part number, product

Installation

Griplok tube fittings are designed for easy installations using hand tools or automatic installers such as the Turn Pro automatic swaging tool.  Learn more about Griplok installation.

Training

Proper 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, selection and use tools, cutting and preparing tubing, and tube bending.

Certifications

Griplok 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, they 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.

Griplok Approvals

Griplok tube fittings have been tested and approved by the following organizations:
•  American Bureau of Shipping
•  TUV ECE R110
•  Griplok Technical Report
•  PG&E Approval
 

Tools and Accessories

SSP offers tools and accessories to support  assembly and installation, tubing cutting, tube preparation, and tube bending. See more about tools and accessories.

Selecting Griplok Tube Fittings

• Cap
• Cross
• Elbow 45 Degrees
• Elbow 90 Degrees
• Ferrule
• Nut
• Plug
• Straight
• Tee