Industrial Valves
SCHROEDAHL TDC
“Descaling and frequent switching applications”
The TDC is a special-purpose automatic recirculation valve developed for descaling systems and other applications involving frequent start-stop cycles, abrasive media, and high-pressure water. Unlike standard ARVs, the TDC is engineered to withstand: Rapid and repeated switching, Highly erosive descaling water, High pressure reduction with minimal wear. It ensures continuous pump protection while significantly extending valve and pump service life in severe duty conditions.
Key Features:
- Optimized for frequent switching cycles
- Wear-resistant, multi-stage bypass trim
- Automatically modulating bypass function
- Quick-acting main valve with low noise level
- Robust forged housing
- Integrated bypass check valve
- No external power or control system required
Technical specifications:
Nominal diameter
DN 80–250 / NPS 3–10
Pressure class
PN 100–400 / Class 600–2500
Temperature (max.)
Up to 230 °C / 446 °F (other temperatures on request)
Housing material
1.0460 / A105, 1.0571 / LF2, 1.4404 / F316L, 1.4462 / F51, 1.4501 / F55
Housing type
Forged
Media
Descaling water (other liquids possible)
Flanges
EN 1092-1, ASME B16.5, ISO 7005, JIS, JPI, welding ends on request
Designs
Vertical installation, horizontal installation, manual start-up, enlarged nominal width of the bypass
Number of stages (max.)
8
Number of controlled stages
8
Operating range (max.)
Delta p up to max. 230 bar
Other
Bypass differential pressure 20–250 bar