Cast Iron Wcb Pn16 DN800 Triple Offset Stainless Steel Valve Butterfly Worm Gear Wafer Butterfly Valve

• Customization: Available
• Media: Gas, Water, Steam, Oil
• Driving Mode: Electric, Manual
• Connection Form: Double Flange
• Structure: Centre Sealing
• Seal Form: Soft and Hard Sealing
• Valve Stem: Normal
• Work Pressure: Low Pressure (Pn<1.6mpa)
• Working Temperature: Normal Temperature (-40°C<T<120°C)
• Material of Seal Surface: Soft Weld
• Valve Body: Casting
• Standard: API, GOST, ANSI
• Application: Industrial Usage, Water Industrial Usage, Household Usage, Marine, Gas, Petroleum, Chemical Industry
• Delivery Time: 15-25 Days
• Disc Material: Di/Nylon/1.4469/1.4529/Saf2205/2507/CF8/CF8m etc
• Seat Material: NBR/EPDM/PTFE/Viton/Silicone etc
• Coating: Customized
• End Standard: Pn6/10/16/25/21/150lb/JIS5K/10K/As2129 Table D/E/F
• Materials: Carbon Steel, Stainless Steel, Aluminum Bronze
• Shutoff Tightness: Zero Leakage
• Operator: Lever, Gear Operated
• End Connection: Wafer, Lugged, Flanged RF, Rtj, FF
• Face to Face: API609 / ASME B16.10
• Material: Carbon Steel, Stainless Steel, Duplex Stainless St
• Flow Characteristic: Quick-Opening, Approximate Equal-Percentage
• Transport Package: Wooden Case
• Specification: customized
• Trademark: yoonad
• Origin: China
• HS Code: 8481804090
• Production Capacity: 10000PCS/Year

Product Description

Butt welded triple offset butterfly valve, This valve is also known as Triple Offset Butterfly Valve. The two offsets are the same as double offsets, and the third one is created by a geometrically designed seat surface. This designed seat and disc create a conical angle, which allows the disc to seal the seat with no friction and come in contact with the shut-off positions. This design in the metal seat provides a bubble-tight shutoff. 

Wafer type butterfly valve fits with the help of studs. The studs go through pipe flanges and tighten the valve between two flanges. This type of valve is useful to prevent any backflow in the system. It is designed to keep a seal against bi-directional pressure.

The Lug type butterfly valve also connects in between the flange-ended pipeline. There are threaded inserts on both sides of the valve body. Both sides of the flange-ended pipe connect to these threaded inserts with two sets of bolts without nuts.

Flanged End Butterfly Valve, This type of valve, Valve has a Flanged body that matches the flanged end pipe and fits with the Nut and Bolts.

 

1. Reliable sealing,convenient operation,opening and closing fast.

2. This kind of valve with no flange, which makes pipe elegantly and binding up conveniently.

3. It adopt triple offset elasticity or multiple layers hard sealing configuration, the hermetical capability can reach to reliable sealing performance.

4. The sealing of disc can be replaced by loosening the disc ring bolts, saving the cost of the valve.

5.The ends of valve inlet port and outlet port has the annular boss, which is conducive to the valve and pipe welding heat absorption and diffusion.

Butterfly valves are quarter-turn valves that are best used for the stop/start of media flow in pipelines. When the valve handle is turned 90°, it either opens or closes completely. Throttling can be a bit tough, but these valves can still be used for regulating purposes.

Butterfly valves are usually installed in a fully open position. This is because installing the valve in its closed position can cause difficulties with the seat and seal positions.

Butt Welded Butterfly Valves are applied to use in heating system, chemical, petroleum, natural gas, refining, energy, food and the role of regulating valve.

Applicable Standards:               
Butterfly valve design according to API609, ASME B16.34
Face to face ASME B16.10/API609
End Flanges ASME B16.5/ASME B16.47
Butt Welding ends ASME B16.25
Inspection and test API 598

 

Material
Body	Carbon Steel(WCB A216), Stainless Steel(SS304/SS316/SS304L/SS316L) , Duplex Stainless Steel(2507/1.4529)
Disc	Carbon Steel(WCB A216),  Stainless Steel(SS304/SS316/SS304L/SS316L) , Duplex Stainless Steel(2507/1.4529)
Stem/Shaft	SS416, SS431, SS304, SS316, Duplex Stainless Steel, Monel
Seat	2Cr13, STL
Packing	Flexible Graphite, Fluoroplastics
Actuator	Hand Lever, Gear Box, Electric Actuator, Pneumatic Actuator