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SEPTIC SYSTEM INSPECT DIAGNOSE REPAIR
SEPTIC CARE INSTRUCTIONS
SEPTIC D-BOX INSTALL REPAIR
SEPTIC DRAINFIELD FAILURE DIAGNOSIS
SEPTIC DYE TEST PROCEDURE
SEPTIC FAILURE SIGNS
SEPTIC INSPECTION & TEST GUIDE
SEPTIC LIFE EXPECTANCY
SEPTIC SUPPLIES & PARTS
SEPTIC SYSTEM DESIGN ALTERNATIVES
SEPTIC SYSTEM DESIGN BASICS
SEPTIC SYSTEMS, HOME BUYERS GUIDE to
SEPTIC SYSTEM SAFETY WARNINGS
SEPTIC TREATMENTS & CHEMICALS
SEWAGE & SEPTIC CONTAMINANTS
SEWAGE BACKUP, WHAT TO DO
SEWAGE BACKUP TEST & CLEANUP
SEWAGE BACKUP PREVENTION
SEWAGE CONTAMINATION in BUILDINGS
SEWAGE CONTAMINANTS in FRUIT / VEGETABLES
SEWAGE EJECTOR / GRINDER PUMPS
SEWAGE LEVELS in SEPTIC TANKS
SEWAGE NITROGEN CONTAMINANTS
SEWAGE PATHOGENS in SEPTIC SLUDGE
SEWER GAS ODORS
SEWER LINE REPLACEMENT
SINKHOLES, WARNING SIGNS
SMELL PATCH TEST to FIND ODOR SOURCE
SOAKAWAY BED FAILURE DIAGNOSIS
SULPHUR & SEWER GAS SMELL SOURCES
TOILETS, INSPECT, INSTALL, REPAIR
ALTERNATIVE & WATERLESS TOILETS
TOILETS, DON'T FLUSH LIST
TRAPS on PLUMBING FIXTURES
TREATMENTS & CHEMICALS, SEPTIC
VIDEO GUIDES: Septic Videos
WATER CONSERVATION MEASURES
WATER SOFTENERS & CONDITIONERS
WATER SUPPLY & DRAIN PIPING
WATER, WELLS, WATER TANKS: TESTING GUIDE
WASHING MACHINES & SEPTIC SYSTEMS
WASTEWATER TREATMENT BASICS
WINTERIZE A BUILDING
Septic drop box splitters: use of special control valves in the septic system D-box or distribution box can give sections of the septic soak bed or leachfield or drainfield a rest, allowing for drainfield recovery. This article describes septic d-box splitters & their use and gives product sources - where to buy a D-box splitter for drainfield R&R.
Septic system D box installation, specifications, inspection, diagnosis, and repair: in this article series about septic system drop boxes we describe the best procedures for locating and inspecting, repairing or replacing the septic drainfield distribution box, or the "D-box" or "Splitter box".
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Reader Question: What's the difference between a septic system D-box and a Splitter?
What is the difference in splitter box and a D box? - T.C.
Reply: why we might need a Zoeller Tru-Flow Splitter in place of a conventional Septic D-box - alternating drainfields & effluent flow balancing
Basically there is no difference in function between a D-box and a Splitter box. All D-boxes have some capability of adjusting the flow of effluent among different D-box outlets - a technique that can extend drainfield life by giving some drainfield sections a rest for two years or so between services. In some literature the control that permits diverting effluent among drainfield segments, or shutting it off entirely, is called a splitter valve. In other installations, a simple manual plug or cap is inserted or adjusted at each outlet opening inside the distribution box.
Some "splitter" boxes such as Zoeller's are more sophisticated than the simple concrete or plastic Distribution Boxes illustrated in the article above.
In a conventional concrete D-box, it's just that: a plastic or concrete or fiberglass "box" into which one pipe delivers septic effluent from the septic tank, and from which two or more pipes carry effluent to drainfield trenches, galleys, or other disposal systems. The box routes effluent among the various lines and if properly installed we hope effluent is distributed evenly. Some D-boxes include a round cover with an eccentric hole that can be rotated up or down to balance the effluent load among different drainfield sections.
Higher velocity pumped septic effluent may require careful effluent distribution control in the D-box - the Splitter
Zoeller's Splitter uses a series of internal baffles to control the routing of effluent among drainfield lines. One raison we might need the baffles and more precise control of effluent distribution through the D-box (or Splitter) is that Zoeller, who manufacture sewage grinder pumps and septic effluent pumps, (we pose) may have found that pumped septic effluent arrives in the Splitter (or D-box) at a higher velocity than effluent that drains into the box from a septic tank by gravity.
At high velocity, effluent entering a conventional D-box may not flow uniformly among the multiple box outlets - instead it would charge across the box and flow mostly into the effluent line directly across from the inlet pipe. Zoeller's baffles appear intended to prevent that problem by diverting flow uniformly among the various Splitter box outlets.
Zoeller's Tru-Flow [D-box] Splitter system includes diverter adjustments that help you fine tune and balance the effluent flow among various drainfield sections. The system can handle varying septic flow rates depending on the number of openings in use in the "box" - that is, depending on the number of outlets and drainfield sections that are in use.
See our contact information for Zoeller just below and also at at the reviewers section at the end of this article for a link to the Zoeller D-Box-Splitter for septic effluent distribution system information.
Watch out: Zoeller warns that if you use this device, which does a more careful job of routing effluent among the different drainfield branches, it is clog-prone if you don't include a septic filter in the system at the effluent outlet end. Indeed, an effluent filter will protect and extend the life of any drainfield and its components.
Reader Question: one side of my fields never dries out, we installed speed levelers and a new D-box. Should we cap off the wet area lines?
I have 8 lines coming off my d box. my yard is slightly pitch to one side. that side also sees most of the rain water. The surface never seems to fully dry like my other lines. speed levelers were installed when the dbox was replaced. should those 2 lines be capped and shut off for a while to regain a better saturation point? i you, JB 5/10/12
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