
Labyrinth Type Trim for High Differential Pressures, patented in 1993 -Combined start-up and full load feed water control valve
This version of the labyrinth type trim combines, in a single trim, the capacity to handle very high DPs with low flows and to handle high flows and low DPs. Making it possible to substitute, with a single valve, those applications where it is usually necessary to use two or more valves in parallel.
Design:
BR 310 Straight through (also available in angle form)
Housing material:
Forged steel
Pipe connection:
Weld ends
Valve plug type:
Multi-stage throttle system consisting of perforated cage and labyrinth plug
Valve seat seal:
Metallic
Spindle seal:
Graphite gland packing
Driver type:
Electric actuator with in lanter integr. Drive sleeve
- Balanced
- Leakage rate A
- Inner parts inserted
- Reduction of extreme high DP‘s in combination with very low dp´s during full load operation
- Replaces two valves in one
- No add. boiler filling valve needed
- Equal percentage characteristic follows boiler curve
- 0-50% opening 25% mass flow up to 6 stages
- 50-100% opening 75% mass flow single stage
Boiler Feedwater Control Valve
Boiler Feedwater Pump Recirculation Valve
Any liquid High Pressure Differential application