
Watts-A7006A Media Gravel, 1/4 IN X 1/8 IN, Orange Marking, 0.5 Cubic Foot, 50 Pound Bag
Watts A7006A Support Gravel
How Support Gravel Protects Your Filter Bed
Base Layer Installation
Installed at the bottom of the filter tank above the distributor basket or laterals, creating a stable foundation that prevents media from entering the underdrain system during backwash cycles.
Flow Equalization
The graded 1/4" x 1/8" sizing ensures even water distribution across the entire tank cross-section, eliminating channeling and dead zones that reduce contact time and filtration efficiency.
Media Bed Stability
Orange marking allows visual confirmation of proper layering during installation. The weight and size prevent upward migration during service cycles while allowing complete media expansion during backwash.
Technical Details
| Model Number | Watts A7006A |
| Gravel Size | 1/4 inch x 1/8 inch graded |
| Volume | 0.5 cubic foot per bag |
| Weight | 50 pounds per bag |
| Color Marking | Orange |
| Application | Point of entry filtration tanks |
| Function | Support and distribution layer |
System Applications
The Watts A7006A support gravel is compatible with all whole-house water filtration tanks using granular media such as catalytic carbon, GAC, greensand, Birm, or calcite. Typically used in 9" to 13" diameter residential tanks and commercial vessels up to 21" diameter. Layer depth recommendations vary by tank size and media type, generally 2 to 4 inches. Compatible with Watts, Clack, Fleck, Structural, and Pentair filter tank systems requiring underbedding support.
Watts A7006A Support Gravel
How Support Gravel Protects Your Filter Bed
Base Layer Installation
Installed at the bottom of the filter tank above the distributor basket or laterals, creating a stable foundation that prevents media from entering the underdrain system during backwash cycles.
Flow Equalization
The graded 1/4" x 1/8" sizing ensures even water distribution across the entire tank cross-section, eliminating channeling and dead zones that reduce contact time and filtration efficiency.
Media Bed Stability
Orange marking allows visual confirmation of proper layering during installation. The weight and size prevent upward migration during service cycles while allowing complete media expansion during backwash.
Technical Details
| Model Number | Watts A7006A |
| Gravel Size | 1/4 inch x 1/8 inch graded |
| Volume | 0.5 cubic foot per bag |
| Weight | 50 pounds per bag |
| Color Marking | Orange |
| Application | Point of entry filtration tanks |
| Function | Support and distribution layer |
System Applications
The Watts A7006A support gravel is compatible with all whole-house water filtration tanks using granular media such as catalytic carbon, GAC, greensand, Birm, or calcite. Typically used in 9" to 13" diameter residential tanks and commercial vessels up to 21" diameter. Layer depth recommendations vary by tank size and media type, generally 2 to 4 inches. Compatible with Watts, Clack, Fleck, Structural, and Pentair filter tank systems requiring underbedding support.
Original: $59.99
-65%$59.99
$21.00Description
Watts A7006A Support Gravel
How Support Gravel Protects Your Filter Bed
Base Layer Installation
Installed at the bottom of the filter tank above the distributor basket or laterals, creating a stable foundation that prevents media from entering the underdrain system during backwash cycles.
Flow Equalization
The graded 1/4" x 1/8" sizing ensures even water distribution across the entire tank cross-section, eliminating channeling and dead zones that reduce contact time and filtration efficiency.
Media Bed Stability
Orange marking allows visual confirmation of proper layering during installation. The weight and size prevent upward migration during service cycles while allowing complete media expansion during backwash.
Technical Details
| Model Number | Watts A7006A |
| Gravel Size | 1/4 inch x 1/8 inch graded |
| Volume | 0.5 cubic foot per bag |
| Weight | 50 pounds per bag |
| Color Marking | Orange |
| Application | Point of entry filtration tanks |
| Function | Support and distribution layer |
System Applications
The Watts A7006A support gravel is compatible with all whole-house water filtration tanks using granular media such as catalytic carbon, GAC, greensand, Birm, or calcite. Typically used in 9" to 13" diameter residential tanks and commercial vessels up to 21" diameter. Layer depth recommendations vary by tank size and media type, generally 2 to 4 inches. Compatible with Watts, Clack, Fleck, Structural, and Pentair filter tank systems requiring underbedding support.














