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Drains

 

 
Grease Separators

General Information - Combination Separator-Drains

Rockford Drains prevent any off-the-floor sediment, solids, or other foreign waste matter from entering the drainage system. Features include heavy-duty inlet grate, integral deep seal trap, sediment pan, wide anchor flange, double vent connections, cleanout at floor level, 4" auxiliary inlet.

OPERATION

Note course of water travel in cut-open view. Arrows designate course from inlet grate A into sediment and mud pan B, under and through separator screen and flow-regulator filter screen C, to outlet. Also note separation and retention, through gravity action, of heavy sludge in sediment pan. A seal against foul odors is formed by the water in the sediment pan B.

RELATED INSTALLATIONS

For complete protection of garage and similar types of floor drainage, other Rockford drainage units are recommended for use in conjunction with the SD Series. Oil Separators. Trench Drains.

CONSTRUCTION

The SD Series Separator-Drain is built of all-welded heavy steel for maximum structural strength and durability. It is enamel coated inside and asphalt coated outside for resistance to corrosion. Unit has removable heavy-duty, non-breakable steel inlet grate. The grate can also be furnished in stainless steel. Separator screen (U-shaped) and filter screen (V-shaped) regulate flow and filter the waste water. They lift out for easy cleaning of the separator-drain, as does the removable sediment and mud pan which traps heavy solids. Standard tapped outlet is separated from main body of unit, providing an outside, visible trap seal. Independent internal vent connection releases trapped fumes.

COR-TEN® INFORMATION

Cor-Ten® high-strength, low carbon steel with its high strength and outstanding resistance to atmospheric corrosion is available where maintenance cost savings are prime considerations. Even in an unpainted condition, Cor-Ten® has a tightly adherent oxide surface which stops further oxidation. Painted or coated, this characteristic is further enhanced. The reliability and strength of this material has been proven in many applications, such as railroad cars, bridges and two of the tallest buildings in the world: the John Hancock Building and the Sears Tower in Chicago.

Grease Separators
SD Separator-Drain installed in tiled floor

DESIGN

The SD Series Separator-Drain for garage and industrial floor drainage is designed to retain mud, sediment, and greasy sludge or so-called solids in its sediment pan and sludge compartment. In addition, it separates and retains greasy and oily wastes, preventing their evacuation into the drainage lines where they cause blocking and stoppages. Another exclusive feature is the automatic shut-off against incoming waste water when the holding capacity of the sediment and mud pan has been reached. The trap formed where the water passes into the lower section of the unit is the point where stoppage occurs until the drain has been cleaned.

Square corners make the SD Series separator-drain ideal for use with any type of tile, eliminating costly tile cutting required by old-fashioned round drains and assuring proper pitch for water run-off without unsightly puddles around the drain.

WHEN TO CLEAN THE DRAIN SD AND RSD Series:

When the holding capacity of the sediment and mud pan has been reached, it will stop entry of incoming waste water through the inlet grate. This is the signal that the separator drain needs cleaning. However, it is best not to wait until this happens. A gradual sluggishness in off-the-floor draining is a warning that the unit is ready for cleaning.

HOW TO CLEAN THE DRAIN

  1. Remove the inlet grate.
  2. Remove sediment and mud pan, and clean it.
  3. Lift out V-shaped filter screen and U-shaped separator screen.
  4. Scoop out heavy sludge from bottom of unit.
  5. Replace U-screen, sediment and mud pan, and inlet grate.

 

General Information - Trench Drains

For interior or exterior off-the-floor drainage.

Note single-unit construction of drain body: Anchor flange makes unit an integral part of floor. Standard tapped outlet is shown, but a straight spigot or a 90° spigot elbow connection is available.

ADVANTAGES

Single-unit construction eliminates three problems usually encountered with frame-type drains that are bolted together: leaks caused by vibration and traffic, possible infiltration of waste water into surrounding areas, and misalignment. In addition, when the anchor flange encircling the body of the drain is embedded in concrete, the unit becomes an integral part of the floor. Because the bottom of the drain is prepitched, installation costs are substantially reduced. If the area is to be tiled, there are further savings because the straight edges of the Trench Drain eliminate special shaping and cutting of tiles.

CONSTRUCTION

The one-piece body of the heavy-duty GTD Series Trench Drain is constructed of all-welded 1/4" heavy-duty steel plate and the medium-duty RTD Series Trench Drain is constructed of all-welded 1/8" heavy-duty steel plate for maximum strength and durability. OPEX® acid-resistant coating inside and outside to protect against corrosion. Standard tapped outlet has removable gravel strainer.

COR-TEN® INFORMATION

Cor-Ten® high-strength, low carbon steel with its high strength and outstanding resistance to atmospheric corrosion is available where maintenance cost savings are prime considerations. Even in an unpainted condition, Cor-Ten® has a tightly adherent oxide surface which stops further oxidation. Painted or coated, this characteristic is further enhanced. The reliability and strength of this material has been proven in many applications, such as railroad cars, bridges and two of the tallest buildings in the world: the John Hancock Building and the Sears Tower in Chicago.

Grease Separators
Cover grate with circular openings

Grease Separators
Nonskid diamond pattern treadplate

COVER GRATES

The sectional cover grates are built of premium, high-strength, non-breakable steel for long life and high resistance to atmospheric corrosion. Various types of cover grates are available in addition to the heavy-duty steel grates. Stainless steel is recommended for use in hospitals, laboratories, and similar installations. Nonskid diamond pattern grates are also available. All cover grates can be furnished in vandal- and tamper-proof designs. Grate openings shall be equal to 21/2 times the pipe to which the drain is connected. Example: 6" pipe has an open area = to 28.8 sq. inches – grate must have 72 sq. inches of open area. Choices of grate openings include 3/8" x 3" slots, 3/8" or larger circular openings, or 1/4" circular openings for safety concerning small-heeled shoes. The standard length of each grate is 2 feet; however, if a special size drain is ordered, the length of one cover grate will be adjusted accordingly. For hospitals, laboratories, and similar jobs, the entire drain can be ordered in stainless steel, or the standard drain can be ordered with stainless steel cover grates.