Sempell controlled and uncontrolled non-return or swing check valves prevent unallowable pressure built up in the turbine coming due to back-flowing steam
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Sempell Model 801 DIN Non-Return Valves
Sempell Model 801 DIN Non-Return Valves
Specs
Certifications
PED, ASME B31.1
End Connection
Butt Weld
Application
High Temp, HRSG, Steam turbine
Body Design
Long Pattern
Material
Steel, Metal, Carbon Steel, Alloy
Operating Temperature
High Temperature
Pressure Class
PN, ASME
Process Connection Type
BWE
Seat/Seal Type
Swing, Metal-to-Metal
Shutoff Class
Class V (FCI 70-2)
Standards
ASME B16.34
Style
Direct-Operated
Valve Size
NPS 14 / DN 350, NPS 18 / DN 450, NPS 20 / DN 500, NPS 24 / DN 600, NPS 16 / DN 400
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.