ISO Standard Eccentric Double Flanged Rubber Seal Butterfly Valve

Ref Price:
Loading Port:
China main port
Payment Terms:
TT OR LC
Min Order Qty:
5 set
Supply Capability:
50 set/month

OKorder Service Pledge

Quality Product

Order On-line Tracking

Timely Delivery

OKorder Service Pledge

Credit Rating

Credit Services

Credit Purchasing

Share to:

Product Description:

1. Butterfly Valve Description

A butterfly valve is a valve which can be used for isolating or regulating flow. The closing mechanism takes the form of a disk. Operation is similar to that of a ball valve, which allows for quick shut off. Butterfly valves are generally favored because they are lower in cost to other valve designs as well as being lighter in weight, meaning less support is required. The disc is positioned in the center of the pipe, passing through the disc is a rod connected to an actuator on the outside of the valve. Rotating the actuator turns the disc either parallel or perpendicular to the flow. Unlike a ball valve, the disc is always present within the flow, therefore a pressure drop is always induced in the flow, regardless of valve position.

 

2.Main Features of the Butterfly Valve 

(1) 90° movement for full open/close position. 

(2) Excellent control characteristics.Tight shut-off even after innumerable operations.

(3) Installation cost considerably reduced because of very low weight and compact design.

(4) Longer life and reliable service with minimum component wear.

(5) Renewable seats. No supplementary gasket required with the adjacent pipework.

(6) Body & Stem totally protected from service fluid.

 

3. Butterfly Valve Images

 

 

ISO Standard Eccentric Double Flanged Rubber Seal  Butterfly Valve

ISO Standard Eccentric Double Flanged Rubber Seal  Butterfly Valve

ISO Standard Eccentric Double Flanged Rubber Seal  Butterfly Valve

 

4.Butterfly Valve  Specification:

BODY

DISC

STEM

SEAT

BUSHING

MATERIAL

WORKING PRESSURE

CAST IRON

DUCTILE IRON WITH NICKEL PLATED

CARBON

STEEL

NR

-20-+85

LUBRIZED

BRONZE

DUCTILE

IRON

ALUMINUM BRONZE

STAINLESS
STEEL

HYPALON

-18-+135

INSTANTANEOUS

-18-+149

PTFE

ALUMINUM
BRONZE

STAINLESS STEEL

EPDM

-45-+135

INSTANTANEOUS

-50-+150

CARBON

STEEL

CARBON
STEEL

NEOPRENE

-7-+193

INSTANTANEOUS

-7-+107

STAINLESS STEEL

NBR

-12-+82

INSTANTANEOUS

-12-+93

WEAR-RESISTANT RUBBER

-10-+50

VITON

-23-+150

HEAT-RESISTANT RUBBER

-20-+150

PTFE

+10-+150

 

5.FAQ

1. What is manual wafer butterfly valve?

 Wafer style is the more common of the two and is less expensive than the lug style. The wafer style butterfly valve is just about the standard. It ís so common that no one even bothers to use the word "wafer" when ordering a butterfly valve. It is taken for granted that if a butterfly valve is ordered, a wafer style will be received.

 2. How about the Installation of the Wafer Style Butterfly Valve?

Butterfly valves are installed by inserting the valve between two flanges using bolts or studs and nuts to hold it all together. This type of installation, of course, makes it impossible to disconnect just one side of the piping system from the valve. That benefit is received using the lug style valve.

3. What is the working principle of manual wafer butterfly valve?

 A butterfly valve is from a family of valves called quarter-turn valves. In operation, the valve is fully open or closed when the disc is rotated a quarter turn. The "butterfly" is a metal disc mounted on a rod. When the valve is closed, the disc is turned so that it completely blocks off the passageway. When the valve is fully open, the disc is rotated a quarter turn so that it allows an almost unrestricted passage of the fluid. The valve may also be opened incrementally to throttle flow.

 

 

Send a message to us:

Remaining: 4000 characters

- Self introduction

- Required specifications

- Inquire about price/MOQ

Q:The nuts that hold my kitchen faucet in place are too tight but not rusty Need help unscrewing them. Advice?
The fasted way to remove to these nuts is to drill holes in the nut itself. You will need a variable speed drill and a drill bit which is larger than the nut itself. Drill 4 holes directly opposite each other where the nut meets the supply shank. Use a screwdriver and hammer and tap and twist the washer where the holes were drilled . The nut sections will seperarate and easily fall off. Be sure to wear safety glasses for eye protection while working overhead. Metal shavings are extremely sharp.
Q:Faucet to open the water heater why not fire
Water heater can not hit the fire, there are several reasons: First, check the battery if there is electricity, if the battery is no electricity, then the performance of power failure or no fire, replace the battery after the general can be resolved. Second, the water pressure is too low. Now the gas water heater can be low water pressure start, but if the water pressure is too low, then the water and gas linkage valve will not start, the performance of no ignition. Of course, the water at the filter plug can also cause the water flow is too small, just clean up. Third, the water vapor linkage valve water pressure diaphragm aging. Hydraulic membrane aging loss of elasticity, it will cause the slider is not flexible, then even if the water pressure is normal, the gas will not pass, the performance for the first time can be used normally, but the second use will be separated by a period of time and so on Block normal reset to fire, or simply can not fire. Fourth, the flue is blocked. Flue obstruction will cause high-temperature exhaust row does not go out, resulting in return pressure, resulting in failure of ignition, we can according to the fire situation and the amount of exhaust gas to determine the size of the general can be clear after the normal ignition. Fifth, the air pressure is not normal. Natural gas pipe network pressure is normal, but the gas tank is not necessarily, the gas pressure is too high or too low will cause no fire, adjust the liquefied gas valve or replace the rubber mold.
Q:Kitchen faucet switch handle bad, how to repair?
This is hard to say! You still do not waste before the first water!
Q:Bathroom faucet bolts wont come off please help?
There are special tools made for that available at any good hardware store, they are like a deep-socket with a T-handle, but to help without that tool spray the bolt/nut/washer with WD-40 and let set for 10 minutes, wipe off excess and try again.
Q:Will the faucet mouth how to screw down?
First with fire, and then wrench. Generally rusty spiral with the fire after the twist.
Q:How to disassemble the spool?
Demolition of this position can be directly out of, and not because of a long time too tight, you can first loose loose spool, should be able to
Q:What is the good material for the faucet?
Galvanized copper pieces
Q:How do I tighten a loose faucet"?
Because you'll NEVER get a standard wrench up in there (I've tried, trust me), you'll have to pick up a cheap basin wrench at your local hardware store. See below link for pic.
Q:Need to replace bathroom faucet?
You'll need to purchase a tap that matches the middle to middle size of your sink.I endorse Price Pfister, will rate just a little extra, however will final ceaselessly. Turn off the close off valves on scorching and bloodless. There's this distinctive wrench. Looks like a circular steel rod with a tee manage at one finish, and variety of a part moon with enamel at the different finish. Cost approximately $10. The toothed finish may also be swiveled for loosening(counterclockwise) or tightening. Use the device to loosen either side. And cast off the historic tap. If imperative, change the bendy hose or pipe that connects the tap to the copper pipe. Don't skimp in this, a couple of greenbacks extra will make the task alot less difficult. Fittings will need to fit on each ends of the bendy hose. Apply plumbers putty to the threads as you construct. Don't over tighten. When it is in combination, open the close off valves and verify for leaks.
Q:How can you open the round (shape) head faucet filter and bubbler?
There is a hand-made flat pliers that hold the groove and rotate it open.

1. Manufacturer Overview

Location
Year Established
Annual Output Value
Main Markets
Company Certifications

2. Manufacturer Certificates

a) Certification Name  
Range  
Reference  
Validity Period  

3. Manufacturer Capability

a)Trade Capacity  
Nearest Port
Export Percentage
No.of Employees in Trade Department
Language Spoken:
b)Factory Information  
Factory Size:
No. of Production Lines
Contract Manufacturing
Product Price Range