EQUALIZING & RELIEF VALVES
PRESSURE EQUALIZING AND RELIEF VALVES
The VCL Equalizing and Relief Valve is a valve type used at the top of the blast furnace (BF). Several of these valves are connected to the material lock hoppers of the BF charging system. The equalizing and relief valves are used to equalize the filled hoppers to furnace top pressure before charging and – on the other hand – to relieve the hoppers to ambient pressure before refilling. The large maintenance door of the VCL ERV allows good accessibility for maintenance work and easy replacement of wear parts. The valve disc is completely swiveled out of the flow in the open position in order to minimize seal wear.
DESIGN FEATURES OF
EQUALIZING & RELIEF VALVES
- Fabricated construction
- Adjustable valve actuation with hydraulic cylinder (Standard)
- Pressure rating up to 3.0 bar
- Service temperatures up to 300 °C
- Nominal sizes DN 300 – DN 600
- Other sizes or operating conditions on request
DESIGN
ADVANTAGES
- Dismantling of internals (seat / lever-flap-unit) can pass through the large maintenance door
- Reduced maintenance and improved accessibility of equipment components
- Higher reliability & availability thanks to continuously improved design and customer feedback over several years
