Butterfly Valve ; Three-eccentric Multi-layer Butterfly Valve

Butterfly Valve ; Three-eccentric Multi-layer Butterfly Valve System 1

Butterfly Valve ; Three-eccentric Multi-layer Butterfly Valve

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Loading Port:: China main port

Payment Terms:: TT OR LC

Min Order Qty:: 10 pc

Supply Capability:: 1000 pc/month

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Specification

Material:

Steel

Pressure:

Low Pressure

Temperature of Media:

Normal Temperature

Power:

Manual,Pneumatic,Electrical,Worm gear,Other

Media:

Air / Water / Steam / Coal Gas / Oil Product / Alkali / Saline with low corrosive service

OD（Outer Diameter: inch）:

2000

Size(inch):

406

Pressure（LB）:

Net Weight (kg):

5300

Features
The butterfly valve has the ideal sealing track since following three-eccentric principle, without friction and interference between sealing seats, and also adopts the proper material, which make the butterfly valve have the reliable sealing ability, corrosion resistant, temperature resistant and wearing resistant. The main features as bellow:
1.Small open torque, flexible and convenient, laboursaving and energy economised.
2.Three-eccentric structure to make the disc more and more tighter, with reliable sealing ability and no leakage.
3.High Pressure resistant, corrosion resistant, wearing resistant, long lifetime.

Application Standards
Design standard: CJ/T 261-2007 ; GB/T12238-89
Flange standard: GB/T9113.1-2000 ; GB/T9113.2-2000 ; GB/T9115.1-2000 ; GB/T9115.2-2000 ; HG20596-97

Face-to-face: GB/T12221-1989

Pressure test: GB/T13927-1992 ; JB/T9092-1999

Main Technical Parameter

Nominal Diameter	DN(mm)	‍‍ 50~2000‍‍‍‍‍‍‍‍‍‍‍‍‍‍				50~500
Nominal Pressure	PN(MPa)	0.6	1.0	1.6	2.5	4.0
	Intensity Test	0.9	1.5	2.4	3.75	6.0
	Seal test	0.66	1.1	1.76	2.75	4.4
	Air Test	0.6	0.6	0.6	0.6	0.6
Leakage	<0.1 XDNmm³/s (Conforming to GB/T13927 Standard)
Applicable Temperature	Carbon Steel: -29^oC ~ 425^oC / Stainless Steel: -40^oC ~ 600^oC
Applicable Medium	Air / Water / Steam / Coal Gas / Oil Product / Alkali / Saline with low corrosive service
Method	Worm gear / Pneumatic / Electric

Material for main parts

Parts Name	Material
Body	Castiron / Stainless steel / Cr-Mo steel / Alloy steel
Disc	Cast steel / Alloy steel / Stainless steel / Cr-Mo steel
Seats	Stainless steel / Multi-layer asbestos with temperature resistant
Stem	2Cr13 / Stainless steel / Cr-Mo steel
Bearing	304 nitrification Austenite stainless steel / Cr-Mo steel
Packing	Flexible graphite

Please consult customer service before placing an order( in order to confirm with size and material of the relevant product).

Q: What's the difference between the three eccentric butterfly valve and the two eccentric butterfly valve?: Single eccentric butterfly valve: extrusion problems, address concentric butterfly valve and valve seat of the resulting in a single eccentric butterfly valve, the structural characteristics of the stem axis deviated from the disc center, so that the butterfly is no longer a rotary bottom plate, axial dispersion, reduce the excessive squeezing and the lower end of the seat of the butterfly board. Double eccentric butterfly valve: in the single eccentric butterfly valve on the basis of further improvement of forming, is the most widely used double eccentric butterfly valve.

Q: What's the size of the signal butterfly valve sleeve?: The structure characteristics and working principle: the top design electrical device the butterfly valve of the worm and the worm gear driving device, and with the stem straight connecting transmission. In the closed precision electromechanical device, opening mechanical instructions and imported electrical components and parts with rust proof valve.

Q: I have a 1993 Oldsmobile Cutlass Supreme and I think I have the case of the blow-by. The engine had high mileage, but was rebuilt b/c it stalled while driving. 3.1L V6 gasoline engine. The fuel filter and the fuel pump are brand new. Now we have the same problem a few months later. It stalls while driving. Its been sitting a while and won't start by itself, so I pulled off the air intake hose off of the air filter to spray starting fluid into it. I noticed oil puddled in the air intake hose, so I looked for the PCV valve on the rocker cover. There is a tube going from the air-intake hose to the rocker cover. I popped out the tube from the rocker cover and there is no PCV valve. Just tube. Is that where the PCV valve is supposed to go? If not, where can I find it on the engine? And could that possibly fix the blow-by and the stalling engine? I'd appreciate any help. Thanks in advance.: top of the manifold

Q: Butterfly valve is the control valve?: The flow characteristics of butterfly valves can be approximately equal percentage characteristics, with the positioner can do adjust, is mainly used in large caliber, straight stroke control valve more than 200 volume weight will be great, it suggests using the butterfly valve.

Q: What's the difference between turbine butterfly valve and manual butterfly valve?: Butterfly (Manual butterfly) butterfly plate installed in the direction of the diameter of the pipe. In the butterfly valve body cylindrical channel, the disc shaped disc rotates around the axis. The angle of rotation is between 0 and -90 degrees. When rotating to 90 degrees, the valve is fully open.Butterfly valve structure is simple, small size, light weight, only by a few parts. The utility model can be rapidly opened and closed only by rotating 90 DEG, the operation is simple, and the valve has good fluid control characteristics. When the butterfly valve is in the fully open position, the butterfly plate thickness is the only resistance when the medium passes through the valve body, so the pressure drop produced by the valve is very small, so the flow control characteristic is better. Butterfly valve has an elastic seal and metal seal, two types of seals. Resilient sealing valve. The sealing ring can be mounted on the valve body or attached to the periphery of the disc.

Q: Should I connect the butterfly valve before and after the pump? Or gate valve?: The best pump outlet valve, because the valve opening control accuracy, no movement. Valve structure is strong, adjusting performance better than butterfly valve. The pump outlet needs constant switching and adjustment, so the pump outlet valve is suitable for gate valve.Life water system valve, it is best to choose the gate valve, strong and reliable, cut off the system to grasp. But the cost is higher, occupying more space.Choose 1 or 1.6, there is no principle requirements, because the water supply pressure of life is generally between 0.25-0.5MPA, can meet the requirements. Only 1.6 is more durable and stronger, but the price is higher.

Q: Who can give me a download UG butterfly valve, needle valve, diaphragm valve standard model address, Japanese standard, American Standard.: Give you the address bar, this is a three-dimensional CAD model library of an online version of the real registered mail, free of charge, there are hundreds of Chinese and foreign manufacturers of the product model is available for download, such as ABB, SMC, FESTO, AIRTAC, CAMOZZI, MISUMI etc..

Q: What is the butterfly valve: Conclusion: Although the double valve advanced technology, metrology, but must ensure stable and timely flow of materials, in order to achieve good results, so the combination of flotation system and dual use of butterfly valve can fundamentally solve the flow and measurement of powder, so as to rely on self weight principle of materials, so we plant layout the middle of a large number of mechanical equipment to save not only, more important to reduce the cost of investment and running.

Q: When i waa replacing the valves in the las 4 valves , they dropped and i dont know how to make them go back up, and i dont want to take the engine out of the car, is there any tool to make the valve go back up or there is any way to do it?? People told me that i can crank it by and , but i dont know how to do it where do i have to do it, i need help please im begging for help!: Asking okorder /

Q: Butterfly valve structure and working principle: How it works: the disc is driven by the stem, and if it turns 90 degrees, it can be opened and closed once. By changing the deflection angle of the plate, the flow of the medium can be controlled. There are two kinds of butterfly valves commonly used: clip type butterfly valve and flanged butterfly valve.

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