Double Flange Type Butterfly Valve

PTFE Lined Butterfly Valve

1. Design and manufacture: API 609/EN 593/BS 5155.
2. Flange dimensions: EN 1092-2/BS 4504/ASME B16.1.
3. Top flange dimensions: ISO 5211.
4. Face to face dimensions: EN 558/ISO 5752/DIN 3202.
5. Test and inspection: API 598/EN12266.
6. Size up to 56".

FEEDBACK

Product Fearues

Absolutely Tight Sealing: Ensures leak-proof performance with flow in either direction, providing superior sealing capabilities.
Low Operating Torque: The precisely machined valve body and disc contribute to reduced operating torque, making the valve easier to operate and more energy-efficient.
Long Service Life & Reliability: The PTFE lining prevents corrosion, extending the valve’s lifespan and enhancing overall reliability, even in harsh or corrosive environments.
Disassembly & Recycling: The valve can be disassembled for maintenance or repair, and the materials are recyclable, supporting sustainable practices in industrial settings.

Working/Testing Pressure

Size	DN	40mm-300mm	350mm-1200mm
	Inch	1-1/2''-12''	14''-24''
Working		10bar
Testing	Shell	15bar
	Seal	11bar

Working Temperature

Seat Material	EPDM	NBR	FKM	PTFE
Temperature	-10℃ to 120℃	-10℃ to 80℃	-15℃ to 200℃	-25℃ to 180℃

Material Specification

Part	Material
Body	Ductile Iron CF8 CF8M CF3M Duplex Steel Al-Bronze
Disc	WCB CF8 CF8M CF3M Duplex Steel /PTFE
Shaft	SS431 SS316 17-4PH
Seat	PTFE/PFA
Bushing	Stainless Steel Ring
Lever	Malleable Iron Carbon Steel Aluminum SS316
Gear Box	Ductile Iron Aluminum SS316