Double Flanged Butterfly Valve

At TWT, we take great pride in our exceptional butterfly flange valves, establishing ourselves as a renowned manufacturer and supplier in the industry. With our expertise in valve research and development, we have become a leading provider, delivering top-quality industrial flanged butterfly valves.

We understand the critical role that butterfly valves play in industrial operations. That’s why we go above and beyond to deliver valves that meet the highest industry standards. Our valves offer reliable and efficient flow control, allowing for seamless operation and enhanced productivity. With TWT’s butterfly flange valves, you can trust that your industrial processes will operate smoothly and efficiently.

Request for Quotation

Product Description

Basic Information

Driving Mode	Manual	Connection Form	Flange
Structure	Double-Eccentric Sealing	Seal Form	Auto Sealed
Valve Stem	Normal	Work Pressure	Low Pressure (Pn<1.6mpa)
Working Temperature	Normal Temperature (-40°C<T<120°C)	Material of Seal Surface	Soft Sealed
Valve Body	Casting	Standard	API609/DIN3354/BS5155/En593
Application	Industrial Usage, Water Industrial Usage, Household Usage	OEM&ODM	Customer Request
Factory History	65 Production History	Operation	Worm gear
Size	DN1400	Pressure	Pn16
Design	En593	Flange Drilling	En1092 Pn16
Face to Face	En558 13 Series	Coating	Epoxy
Materials	Ductile Iron	Certification	ISO/CE/BV
Warranty	18 Monthes	Transport Package	Export Plywood Box

Product Description

Nominal Diameter: DN150-DN3600
Nominal Pressure: 10Bar/16Bar/Class 150
Design Standard: API609/EN593/BS5155/DIN3354
Face to face: ASME B16.10,EN558,DIN3202,ISO5752
Flange Connection: ASME B16.1 / ASME B16.47, AWWA C207, EN1092/BS4504
Inspection and Test: EN12266-1/API 598/ISO5208
Top flange: ISO5211

Material List:

1. Body:Ductile Iron: ASTM A536 / GGG40
2. Disc: ASTM A536 / GGG40
3. Stem :Stainless Steel: ASTM A182 304/316/431 / Duplex Stainless Steel

Other Description

Installation without restriction in direction of flow.
Reduced weight and overall dimensions.
Low pressure loss and reduced energy costs.
High KV / CV values.
Easy to clean and disinfect for potable water systems etc.
Self cleaning (no residue will be trapped).
Good resistance to corrosion.
Manul , electric actuator , pneumatic actuator , hydraulic actuator , bare shaft is optional
Wate , drinking water , portable water , Oil , sea water , gas are all available working service.
Size is from DN150-DN3600

Technical Specification

No	Item	Standard
1	Design and manufacturing Standard	API609/EN593/BS5155/DIN3354
2	Pressure-Temperature Rating	PN6,PN10,PN16, Class125, Class150
3	Structure length(Face-Face)	ASME B16.10,EN558,DIN3202,ISO5752
4	Flange Ends	ASME B16.1 /ASME B16.47,AWWA C207,EN1092/BS4504ASME B16.1 /ASME B16.47,AWWA C207,EN1092/BS4504
5	Inspection&Test	API598, EN12266-1
6	Connection	Flange type
7	Fluid medium	Water, Oil, Gas and various corrosive media,drinking water ,portable water , sea water
8	Operation option	Worm Gear,electric and pneumatic control device.
9	Applicable size	DN100 ~ DN3600
10	Using temperature	-10ºC ~ 150ºC
11	Normal Pressure(Mpa)	PN1.0 ~ 2.5MPa(Class150,Class300)
12	Connection standard	ANSI·DIN·API·ISO·BS
13	Warranty	18 monthes

Main Material

No	Part	Material	No	Part	Material
1	Body	DI(A536 65-45-12),GGG40,GGG50	2	Disc	DI(A536 65-45-12),GGG40,GGG50/Aluminum bronze,duplex stainless steel
3	Up/ Down Shaft	Stainless Steel(304,416, 420,431) duplex stainless steel	4	Disc Sealing Ring	EPDM, NBR
5	Body Sealing Ring	EPDM, NBR	6	Taper pin	Stainless Steel(304,416,420,431)
7	Up/ Down Shaft sealing Ring	NBR	8	Up/Down Bushing	DF-1
9	Disc Sealing Steel Ring	SS316	10	Key	Steel
11	Packing	NBR	12	Yoke	DI(A536 65-45-12)

Company Profile

Our Advantages

• More than 60 years of valve production experience
• with advanced processing equipment
• large testing laboratories
• and sufficient raw material reserves

FAQ

Q1.Whether it is a factory?
A:yes, we are China’s leading valve manufacturer and supplier with more than 60 years of valve production experience since 1956
Q2.Can i have any own customized product?
A:yes you are customized requirements for standard,size,colour,packing,nameplate,mark,etc
Q3.Do you provide samples?
A:yes we can provide the samples but do not pay the charge of freight
Q4.What’s your terms of payment?
A:30% in advance 70% balance before shipment
Q5.Is there any testing equipment
A:Yes, we have pressure testing equipment, and large-scale laboratories and non-destructive testing equipment