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WUXI KELK APPARATUS &VALVE CO.,LTD
NO.6 DeYu Road,Hongshan Town,Wuxi,Jiangsu,China
Postcode： 214115

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+86 (510) 85141819

info@kelkflow.com.cn

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BT220 High Performance Double Offset Butterfly Valve (Flange)

The valve plate and valve seat of BT220 have a unique structural design. It has reliable sealing, excellent performance and long service life. Standard soft sealing valve seat uses a flexible lip seal ring structure to handle change of temperature and pressure, and there is no need to increase O-ring or metal pad ring to keep sealed; at the same time the valve also has fire-resistant soft sealing valve seat and hard sealing valve seat, widely used in various working conditions.

Performance Characteristics

1、The valve has the characteristics of two-way sealing and no leakage of air bubbles, which is suitable for the bidirectional flow condition; the sealing ring has long service life and low maintenance amount. Valve has fire knot, applicable to the requirements of fire conditions.
2、The surface plate of BT210 valve is processed with hard chrome and polishing treatment, like a mirror, so as to reduce the wear of the valve seat.
3、On the flange connection form, seal more stable.

Specifications

Body Size	3"(DN80)～60"(DN1500)
Body Rating	ANSI Class 150#～300#
Fluid Temp	-196～+550℃
Connections	Flanges(FF,RF)
Body Materials	WCB,CF8,CF8M,etc
Plug Materials	WCB,CF8,CF8M,etc
Seat Leakage	Metal seat:Cv×0.01%～0.00001%,ANSI Class VI.Soft seat:ANSI Class VI
Rangeability	60°Opening 25:1 90°Opening 50:1
Flow Characteristics	Approximate Eq%

1、According to conditions of different users, you can choose the seat of different materials, and different degree enhanced PTFE, which can meet the -196℃~-45℃ low-temperature occasions (Kel-F), temperature of-45℃~200℃ temperature occasions (MoS2 reinforced PTFE), -45℃~250℃ (carbon fiber reinforced PTFE) and -45℃~400℃ high temperature applications (316 metal seat).
2、The series of valves’ unique biasing shaft and eccentric valve plate design ensure that the valve in the open mode and in the middle position the sealing ring and the valve plate don’t contact. There is no abrasion in the sealing ring and it can achieve low rotational torque and small operating mechanism.

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