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Sempell Model 802 Swing Check Valve with Power Assist
Sempell Model 802 Swing Check Valve with Power Assist
A free-swinging design enables the valve to close by disc weight, preventing damage in the turbine from reverse flow.
Sempell Model 802 Swing Check Valve with Power Assist

Specs

Size
DN 350 - 800, NPS 14 -32
Pressure
up to PN160, up to class 900
Body sealing
Self sealing, cover sealing
Shaft sealing
Molded graphite packing rings
Closure time
< 2 sec.
Material
Body: SA217WC6
Shaft: 1.4122 nitriding Disc
lever = Hardfacings: 1.4115
Bearing sleeve 1.8550 nitriding
Leakage class
Leakage rate 2 acc. To DIN3220 part 3 or IEC 534 part 4, Class IV, test course 2, medium L
Connection
Welding ends acc. to EN/DIN and ASME

Features

  • Low maintenance gland can be retightened
  • Hard-faced 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.
  • Mechanical taking of control angle directly at disc lever
  • Mounting of pneumatic or hydraulic actuators.
  • Actuator mounting right or left possible seen from steam flow direction.
  • Universal connections by various design of welding ends and flanges as standard.
  • Deviating designs of welding ends in regardof dimension and material as well as other actuators, limit switches and special designs according to customers request can be supplied

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