Pressure Reducing Valves Β· Float Control Valves
Flanged Cast Iron Float Control Valves
Flanged cast iron float control valves are the float-piloted level-control execution for tanks and reservoirs: the float pilot opens and closes the main valve to hold a set water level without external power. The benchmark execution covers DN50 to DN600 at PN10/16 in cast iron (ductile iron alternative) body, with stainless steel seal and stem, flanged per DIN 2501 PN6/10/16 and BS 5155, rated 0 to 80 C for water and waste water.
Part of the Float Control Valves family
Last updated: 2026-11
Specifications
| size range | DN50 to DN600 |
|---|---|
| pressure class | PN10/16 |
| body materials | Cast Iron |
| temperature range | 0 to 80 C |
| design standards | DIN 2501 PN6/10/16, BS 5155 |
| body materials alternative | Ductile Iron (alternative body execution per benchmark page) |
| seal materials | Stainless Steel |
| stem materials | Stainless Steel |
| medium | Water, Waste Water |
Application & selection guidance
Apply this execution wherever a supply line must shut or modulate with tank level - filling make-up basins, cooling tower basins or reservoir inlets - without an electric control loop. Set DN50 to DN600 to the fill-flow demand, PN10 or PN16 to the supply pressure, and keep the duty within water or waste water up to 80 C.
Frequently asked questions
How does a float control valve hold the level?
A float pilot on the water surface senses level and hydraulically positions the main valve: open while the level is below setpoint, then closed as the level reaches it. No external power is needed. The benchmark execution covers DN50 to DN600 flanged bodies for this duty.
Cast iron or ductile iron body?
The benchmark page lists both: cast iron covers standard water duty, ductile iron where impact or surge toughness matters. Both share the stainless seal and stem and the 0 to 80 C window.
What information is needed to quote one?
Nominal size within DN50 to DN600, supply pressure class (PN10/16), the set-level behavior required and the water temperature. The flange standard follows from the pipe class.
Ordering & documentation
Documents
Ask for the documentation set you need with the inquiry β typical items for this execution (material certificates, test reports to the listed inspection standard, dimensional drawings) are confirmed and supplied with the quotation.
Quotation
A quotation-ready inquiry states: nominal size and pressure rating, body and seat material preference, end connection, operation, and the service medium with temperature. Typical values on this page are benchmark reference ranges; the binding values are confirmed at quotation.
Sample & supply
Supply terms, order quantities and lead time are agreed per order β state the destination country and required schedule with the inquiry.
Storage & shipping
Store valves with seats and seals protected from UV, ozone and deformation, keep end-face protectors on until installation, and for elastomer- or PTFE-seated executions avoid prolonged outdoor storage β seat compounds age fastest in direct sunlight and freezing conditions.
More in the Pressure Reducing Valves family
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