Ductile Iron Double Air Valves

Ref Price:
Loading Port:
China Main Port
Payment Terms:
Min Order Qty:
Supply Capability:

OKorder Service Pledge

Quality Product

Order On-line Tracking

Timely Delivery

OKorder Service Pledge

Credit Rating

Credit Services

Credit Purchasing

Share to:

Product Description:


Double flanged Double Eccentric Butterfly Valve
DN100 ~ DN2000

Technical Specifications

- Design and manufacture: EN593, EN1074-1 and 2

- Face to face dimension: EN558-1 Series 14 (DIN3202 F4)

                                              EN558-1 Series 13 (BS5163)

- Flange dimensions and drillling: EN1092-2 PN10/16/25

- Size range: DN100 - DN2000

- Max. working pressure: 1.0/1.6/2.5 MPa

- Inspection test: EN12266

- Working temperature: -15°C to +80°C

- Suitable medium: water

Main Fetures

- Double eccentric disc reduces seal wear and torque

- Body seat ring is welded directly on the body

- Bi-directional flow and low head loss

- Disc sealing ring to be replaceable on pipeline without dismantling the valve

- Body and disc inside and outside epoxy powder coated (min. 250 microns)

- Opening and closing indicators are provided

- Coupling flange for electric actuator in compliance with ISO5211

- Gearbox and electric actuator operation available

Main Parts and Materials

Body and disc: ductile iron EN GJS500-7/400-15

Shafts: stainless steel AISI 420

Body seat ring: stainless steel AISI 304

Disc sealing ring: EPDM or NBR

Retaining ring: stainless steel or ductile iron

Shaft bearing: Du bushes (self lubricating bushes)

Send a message to us:

Remaining: 4000 characters

- Self introduction

- Required specifications

- Inquire about price/MOQ

Q:My shower handle(diverter) seems to be stripped. How shall I remove all the shower valves?
Drill out the set screw. It's most likely brass and will drill out easily. Cut an access in the wall behind your shower wall and just replace the whole thing. This will probably be the easiest fix. It may sound like a lot, but in the end you will most likely save time.
Q:what is a foot valve used in petrochemical companies?
A foot valve is simply a check valve. It is common use in a piping system at the pump suction side. By placing it this way when the pump stops operating, fluid won't flow back into the lower reservoir and the suction side of the pump is always full of liquid.
Q:Problem with sprinkler system valve.?
You didn't mention who manufactured the valve. Sounds like you have a small stone caught between the valve body and the diaphragm. Diaphragms don't open that much and a large enough piece of debris can get caught. Also some valves are manufactured with a small tick screen that is inserted into the diaphragm itself. If it comes out then there will be a small hole in the diaphragm, causing leakage. Take the entire top off of the valve body and inspect the diaphragm. Be careful of the spring in the top. If it was a stone, you will see an indentation in the diaphragm. Feel around the seating edge to see if it is damaged. If all is OK, just put it back together, if not, take the diaphragm to a sprinkler place and get a new one.
Q:Anatomy heart valve order?
R atrium Tricuspid valve R ventricle Pulmonary semilunar valve Pulmonary artery Lungs Pulmonary veins L atrium Mitral valve (bicuspid valve) L ventricle Aortic semilunar valve Aorta Systemic circulation (tissues of the body) Superior/ Inferior vena cava *The pulmonary veins are the only veins of the body that carry freshly oxygenated blood*
Q:Will a tire go flat if you just take out the Valve Stem Cap?
no, the cap for the valve stem is designed to keep dirt out not hold air in ! there is a special tool that removes the valve stem, and some manufacturers have cleverly placed it on the top of the stem cap(so you would remove the cap ,turn it upside down and the metal tool will fit into the valve and unscrew the stem.), otherwise you can get one at the tire dealer or SEARS ,It's about the size of a pencil
Q:Trouble inflating presta valve?
You have a slow leak. You need to pull the tube and patch the hole or replace the tube.
Q:Valve cover oil leak?
Sounds like you should clean your engine, then take a look to see where the leak is. Have you tried tightening the valve cover bolts?.
Q:replacing pressure reducing valve?
The cost you quoted seems a bit high to me. Mine didn't cost anywhere near that amount in East Texas. A pressure reducing valve acts like a check valve when there is no flow. That is it closes as the pressure rises when you are not using any water. In this condition, the hot water heater can raise the pressure even higher since there is no place for the expanding water to go. That is the reason for the expansion tank. Without the expansion tank the pressure relief valve on the hot water heater can relieve unnecessarily or weep a bit.
Q:Controlling a butterfly valve?
Edit: the fast literal answer is no with the aid of be conscious in basic terms. each sort of valve may well be usually considered to be a pass administration device. maximum styles of valves, gate, globe, ball, B'fy may well be manually set everywhere from finished open to totally closed and can be set to any in part open place. The term administration valve usually refers to valves, which comprise butterfly types that are immediately regulated to modulate a cost of pass in accordance to a administration sign to the valve actuating device. in specific circumstances the sign is from a distant sensing element such with the aid of fact the temperature sensor controlling a refrigeration expansion valve. sometime the sign is from in the actuating device itself as in a water rigidity regulator on your place city water grant. The sign itself may well be modulating , as above or that's on/off which includes an emergency shutdown valve on a steam turbine or the on/off valve on your washer.
Q:Aortic valve replacement?
Without surgery, a person with aortic stenosis who has angina or signs of heart failure may do poorly. Possible Complications * Arrhythmias * Endocarditis * Left-sided heart failure * Left ventricular hypertrophy (enlargement) caused by the extra work of pushing blood through the narrowed valve Aortic stenosis can be cured with surgery. After surgery there is a risk for irregular heart rhythms, which can cause sudden death, and blood clots, which can cause a stroke. There is also a risk that the new valve will stop working and need to be replaced. According to a prospective, single-center, nonrandomized study of 25 patients, percutaneous implantation of an aortic valve prosthesis in high risk patients with aortic stenosis results in marked hemodynamic and clinical improvement when successfully completed. Medium- and long-term results are unknown. When selecting the optimal therapy for individual patients, the percutaneous approach must be carefully weighed against the excellent results achieved with conventional surgery. Please note that I am not a medical professional.

1. Manufacturer Overview

Year Established
Annual Output Value
Main Markets
Company Certifications

2. Manufacturer Certificates

a) Certification Name  
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