A-Lok - Model Premium -Flexible Compression Connectors
The A-LOK Premium is a flexible compression connector which will provide a guaranteed watertight seal between the pipe and the wall of a concrete structure. The A-LOK Premium is manufactured to meet or exceed all material and test requirements set forth in ASTM C-923, ASTM C-1478 and ASTM F-2510. A-LOK Premium instantaneously reacts and redistributes its viscoelastic dynamic core material to maintain its circumferential sealing pressure. The core of the connector is filled with a blend of materials which provides a controllable and dynamic viscose fluid within the connector. This material will remain equally distributed throughout the core of the connector, so in the event of short-term or long-term settlement of the pipe begins to occur, the core material will react by redistributing and equalizing the blended materials to maintain its proper sealing compression.
- The A-LOK Premium is the best connector ever made backed by the ALOK Watertight Guarantee
- Functions on pure compression. After the pipe is beveled and the connector and pipe are cleaned and lubricated, the pipe is simply centered in the connector and inserted. Backfilling can be done immediately, thus enhancing project safety and overcoming the typical problems of water, running sand and other unstable trench conditions
- Efficient geometry of the profile lowers the coupling force required to insert the pipe into both radius and flat wall connector designs
- Increased nominal pipe diameter tolerance over conventional compression connector designs while still maintaining up to 10° of omnidirectional axial deflection
- Available in a range of sizes from 12” through 102” utilizing existing A-LOK mandrels
- Like other ALOK connectors on larger-diameter pipe where size prohibits a gasket from being installed in a flat plane, the A-LOK Premium can be configured for casting in a curve with the connector staying perpendicular to the center line of the pipe, which assures no loss of compression or deflection
A-LOK Premium has successfully been tested to ASTM C-923 requirements and ASTM F-2510 deflection requirements of 5% without loss of seal.
A flexible pipe to manhole connector shall be used whenever a pipe pentrates into a precast concrete manhole or structure. The connector shall be the A•LOK Premium Connector as manufactured by A•LOK Products, Inc., Tullytown, PA or approved equal.
The design of the connector shall provide a flexible, watertight seal between the pipe and concrete structure. The connector shall assure that a seal is made between:
1. The connector and the structure wall by casting the connector integrally with the structure wall during the manufacturing process in a manner that it will not pull out during pipe coupling. The connector shall also be capable of being cast into a round structure by curving the connector in a manner that allows it to remain centrally located within the structure wall and perpendicular to the pipe. This configuration will result in no loss of seal or deflection of pipe entering a concrete structure.
2. The seal between the connector and the pipe shall be made by the compression of the connector between the outside circumference of the factory installed smooth oversleeve of a corrugated pipe or the smooth surface of a traditional pipe and the interior hole opening of the structure. The connector shall be the only component to affect the seal between the pipe and structure.
The connector shall be made from materials that conform to the physical and Section 4, "Materials and Manufacture" of ASTM C-923 and F-2510 "Standard Specification for Resilient Connectors Between Reinforced Concrete Manhole Structures and Laterals", and the overall design will meet or exceed Section 7, "Test Methods and Requirements" of ASTM C-923 and F-2510.
This connector shall be sized specifically for the type of pipe being used and shall be installed in accordance with the recommendations of the manufacturer.