Cast-A-Seal 964

The Cast-A-Seal 964 is a simple cast-in pipe- to-manhole connector that offers a watertight flexible connector that is cast into the structure when the concrete is poured. The key lock is integrally cast-in during the production process providing a secure seal for storm water and sanitary collection systems.

Category: Cast In Connectors

General Details
Specifications

What It Is

The unique two-step design accommodates pipe from 4.21″ OD to 6.9″ OD, in either manhole or straight wall applications. One of the primary benefits for the precast producer and the underground excavator is the use of CAS964 for grease traps, commercial septic tanks and similar structures.

When it is cast-in to a grease trap it eliminates the need for dual inventories, the same structure can be supplied for both 4″ and 6″ pipes.

Literature

Full Literature

How It Works

The connector is folded into the casting position.
It is placed on the reusable mandrel and then placed on the form.
After curing, the mandrel is removed.
The connector is then simply unfolded at the job site.
Take-up clamps made from series 304 stainless steel with quick adjusting screws secure the connector to the pipe.

Why It's Better

Two step design fits a variety of pipe OD’s.
Straight wall or manhole casting mandrels.
Available in either open or closed end face.
Adapts easily to pipe size changes or if the connector gets damaged.
Contractor can save time and money by backfilling immediately.

Meets or Exceeds

ASTM C923 Standard Specification for Resilient Connectors Between Reinforced Concrete Manhole Structures, Pipes, and Laterals
ASTM C1244 Standard Test Method for Concrete Sewer Manholes by the Negative Air Pressure (Vacuum) Test
ASTM C1478 Standard Specification for Storm Drain Resilient Connectors Between Reinforced Concrete Storm Sewer Structures, Pipes and Laterals
ASTM C1644 Standard Specification for Resilient Connectors Between Reinforced Concrete On-Site Wastewater Tanks and Pipes
ASTM F-2510 Standard Specification for Resilient Connectors Between Reinforced Concrete Manhole Structures and Corrugated High Density Polyethylene Drainage Pipes

Where To Use

Manholes
Wet wells
Square pump and lift stations
Stormwater structures
On-site treatment structures
Junction chambers
Grease interceptors

A flexible pipe-to-manhole connector shall be employed in the connection of the sanitary and storm drain sewer pipe to precast manholes or other structures. The connector shall be CAST-A-SEAL® 964 as manufactured by Press-Seal Corporation, Fort Wayne, Indiana, or approved equal. The connector shall be the sole element relied on to assure a flexible, watertight seal of the pipe to manhole. The connector shall consist of a rubber gasket and one or two external take-up clamp(s).

The rubber gasket element shall be constructed solely of synthetic or natural rubber, and shall meet or exceed the requirements of ASTM C 923. The connector casting mandrel system shall include a precisely-formed opening in the concrete for installation of a replacement connector in the event that the cast-in connector is damaged.

The external take-up clamp shall be constructed of Series 300 non-magnetic stainless steel and shall utilize no welds in its construction. The clamp shall be installed by torquing the adjusting screw using a torque-setting wrench available from the connector manufacturer.

Selection of the proper size connector for the structure and pipe requirement, and installation thereof, shall be in strict conformance with the recommendations of the connector manufacturer. Any dead end pipe stubs installed in connectors shall be restrained from movement per ASTM C 923.

The finished connection shall provide sealing to 13 psi (minimum) and shall accommodate deflection of the pipe to 7 degrees (minimum) without loss of seal.

Vacuum testing shall be conducted in strict conformance with ASTM C 1244 prior to backfill. Other testing shall be conducted in strict conformance with the requirements of the connector manufacturer.