The American DIAL-A-FLOW™ is a new and innovative device for equally distributing flow out of distribution boxes. With the eccentrically located opening, the installer can rotate the DIAL-A-FLOW™ with a single flip of the wrist to balance all discharge ports for equal flow. Flow Control: The Amercian Dial-A-Flow™ provides a circular weir. Each outlet of the distribution box will equally discharge wastewater upon rising water level in the box. When the opening becomes submerged, the dial-a-flow becomes an orifice and further enhances equal distribution. The discharge rate of each dial-a-flow is depicted in the graph. The head condition is noted in inches above the invert of the orifice and is based on open discharge. The graph was derived from testing in a laboratary environment.

PATENT NO. 4,298,470

Note: ASTM does not set standards for i.d. of many types of pipe. Many types of pipe are specified by o.d. and wall thickness tolerances. Make sure you check your regionally available pipe for fit prior to ordering the green or the gray. Ask for our free sample for a size check.

Installation Instructions Cut pipe as evenly as possible and remove shavings. Insert pipe into distribution box and extend pipe 1" into box. Insert dial-a-flow into pipe ends with opening to one side. (Do not use glue) Note: Proper cutting of corrugated pipe will result in dial-a-flow snapping behind one corrugation. Level pipe individually or place level on orifice lip. Parge pipes in concrete boxes into place with suitable material. Fill with water and "dial up" each pipe to water surface. Featuring One Piece Construction

SPECIFICATION: DIAL-A-FLOW™
Provide a non-corrosive flow control device to be rotateably secured in the discharge piping of the drainfield distribution box. The device shall have an eccentrically located circular opening with a diameter of 1-15/16". This will provide a uniform in any rotated position. The device shall have a leveling lip extending into the box 1/8". The sealing means shall be a cylindrical extension inside the pipe with radially extending seal to initiate contact with pipe at least 3/4" inside the pipe. The device shall be provided with a gripping edge on the periphery of the end faces for easy rotation. The gripping edge shall consist of six uniform extensions and valleys for easy finger gripping.

DIAL 4 GREEN 4" Nominal One-Piece Construction	DIAL 4 GRAY 4" Nominal One-Piece Construction	DIAL 4 BLACK For ADS Pipe
How Do You Equalize Flow? The American Dial-A-Flow™