Flagship
Product
HAFF Stack System
d110 PP single-stack push-fit drainage system. SKZ-validated for India's tallest buildings. Engineered in Israel, manufactured in Vadodara.
12.0 l/s
Max flow rate
576 DU
Discharge units K=0.5
d110
Nominal diameter
SKZ
German certification
System
Overview
Single-Stack Efficiency
HAFF Stack replaces traditional multi-pipe drainage with one d110 PP stack from basement to roof — reducing material, labour, and floor penetrations.
Push-Fit Connection
Tool-free, gasket-sealed push-fit joints
ensure watertight assembly and fast installation. No solvent cement required.
Quiet Operation
PP-MD outer layer absorbs impact noise. HAFF
Stack delivers low acoustic signature for luxury residential specification.
Chemical Resistance
Polypropylene resists acids, alkalis, and
cleaning agents — maintaining performance over 50+ year service life.
SKZ Validated
Real laboratory test data: 12.0 l/s maximum
capacity, 576 discharge units at K=0.5 roughness coefficient.
Technical Data Sheet
| System | HAFF Stack Single-Stack |
| Material | PP (Polypropylene) |
| Nominal Dia | d110 mm |
| Connection | Push-fit, gasket seal |
| Max Flow | 12.0 l/s (SKZ tested) |
| Max DU | 576 DU at K = 0.5 |
| Certification | SKZ Germany |
| Standard | EN 1451 / EN 12056 |
| Temperature | 0°C to 95°C |
| Application | High-rise drainage ≤ 50 storeys |
Building Type Suitability
✓High-rise Residential
(RERA)
✓Commercial & IT
Parks
✓Hospitality
(Hotels)
✓Healthcare
Facilities
✓Smart City
Infrastructure
Ready to Specify HAFF Stack?
Download technical documentation or contact our specification team.