Controlled non-return valve to protect HP turbine against reverse flow.
It enables reliable operation even at LP.
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Sempell Model 801 Controlled Non-Return Valves
Sempell Model 801 Controlled Non-Return Valves
Specs
Body Design
Long Pattern
Material
Alloy, Carbon Steel, Metal, Steel
Operating Temperature
High Temperature
Pressure Class
ASME, PN
Process Connection Type
BWE
Seat/Seal Type
Metal-to-Metal, Swing
Shutoff Class
Class V (FCI 70-2)
Standards
ASME B16.34
Style
Direct-Operated
Valve Size
NPS 14 / DN 350, NPS 16 / DN 400, NPS 18 / DN 450, NPS 20 / DN 500, NPS 24 / DN 600
Valve Size Standard
DN, NPS
Valve Type
Engineered Product
Features
- Low maintenance gland can be retightened.
- Hardfaces sealing faces at disc and body seat.
- Low friction by burnished shaft.
- Surfaces treated bearing faces on each part with relative motion.
- Easy to disassemble bodies.
- Low resistance coefficient x by favorable flow characteristic of internal structure.
- Actuator mounting right or left possible seen from steam flow direction.
- Universal connections by various design of welding ends or direct welding-in.
- Deviating designs of welding ends in regard of dimension and material as well as other actuators, limit switches and special designs according to customers’ request can be supplied.
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