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