pneumatic single-seat bellows sealing adjusting valve

Model：47/48-21000W、97/98-21000W series
Category：Pneumatic Valve
origin：SHANGHAI

SHANGHAI AUTOMATION INSTRUMENTATION CO., LTD

47/48-21000W、97/98-21000W series of pneumatic single-seat bellows sealing adjusting valve, is the new improved product based on foreign advanced technology. 47/48-21000W series product made up of ΣF pneumatic actuator and 21000W series single-seat bellows sealing valve

97/98-21000W series product made up of pneumatic diaphragm multi-spring actuator and 21000W series single-seat bellows sealing valve, small size, light weight. 97/98-21000W series single-seat bellows sealing valve based on 21000 series single-seat valve, introduced domestic and foreign advanced technology of bellows sealing valve, good stability, small leakage, wide using range, use bellows sealing structure and filler, form double seal, so prevent the leakage.

1、 enterprise standard code of this product: Q/YXBM81、Q/YXB82

2、 main technology index

Project	Technology index（without valve positioner ）	Technology index（with valve positioner）
Error of start point	--	±3%
Dead band	--	1%
Error of rated travel	-5%~+15%	-5%~+15%