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Flood Control System

Parks' Double Guard™ Flood Control System Vaults

Depending on the local code requirements and (or) clients' preferences, we install two types of traditional manhole vault structures: block vault or precast vault as well as our newest innovation - The fiberglass J-Vault.

The J-Vault is fiberglass vault which is similar in every way to traditional vaults, except that it is the latest and greatest technology. Other features are increased durability, it looks better, it installs easier and in harder to reach places, and the design is much better for preventing flooding. For a full look at the features, see the Advantages of a Fiberglass Vault page or Watch our Video.

Fiberglass Flood Control J-Vault

The innovative J-Vault compared to a Block Vault

Block Flood Control Vault

The block vault is a solid, heavy-duty structure that measures 5 feet in external diameter and 4 feet in internal diameter. The upper portion tapers in as it reaches the top, so it can accommodate a suitably sized cover. It is constructed with tongue-and-groove cement blocks which interlock for strength and stability. These blocks are installed in mortared layers, and the individual blocks are also mortared. The entire structure is then brushed with concrete slurry to enhance both appearance and structural strength. In all of our years of service, we have never had to replace any of our block vaults for any reason.

Parks' Plumbing & Sewer, Inc. Flood Control System block vault

Block Vault shown before and after strengthening

Parks' Plumbing & Sewer, Inc,. Flood Control System block vault after strengthening

The precast vault is normally installed only in villages where regulations require it. It has the same four foot internal diameter as a block vault, but the external walls are somewhat thinner than block vault. The precast vault consists of large, heavy cylindrical and conical cement layers, and its final overall appearance is similar to that of the block vault. Because these layers are very heavy they have to be lowered down into the excavation by means of a special truck (The Parks' Crane Truck) adapted for that purpose. These layers are similarly sealed with mortar.

Parks' Plumbing & Sewer, Inc. Flood Control System precast vault

Precast Vault shown before and after strengthening

Parks' Plumbing & Sewer, Inc. Flood Control System precast vault after strengthening

For stability, both vaults have to be set on the original, undisturbed soil. This soil surface under the vault structure is leveled and smoothed with sand before the vault structure is installed. To facilitate access to the valves and the pump, cast iron steps are installed inside the block vault. The precast vault requires special plastic steps for the same purpose.

Parks' Plumbing & Sewer, Inc. Flood Control System completed precast vault

Completed Precast Vault and final results

Park's Plumbing & Sewer, Inc. Flood Control System after installation

The cavity between the side of the vault and the original, undisturbed soil is also filled with sand to avoid having the ground sink around the vault. It costs Parks' Plumbing more to haul away dirt and bring in sand or gravel back-fill but the final product of a smooth lawn is well worth the extra time and money put into the job. Parks' is always concerned about the final product and we are always looking for ways to improve our systems.