Ductile Iron Double Air Valves

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Specifications

Double flanged Double Eccentric Butterfly Valve
PN10/16/25
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)

Q:I think I have a bad valve steam seals because when I start the car white-grayish smoke comes out of the back of the car. When let sit for 2 or more hours start car and smoke comes out everytime. Will a valve adjusment fix the problem? Thanks: Well, it can only get from bad to worse, costing double as much everytime. For now if you leave it, you will need to top up your engine oil very often, and your fuel consumption will become higher as engine friction is higher and ignition sealing is poor (high blowby gases). This means also lower efficiency of the vehicle. If the weather is hot, the engine will have a higher probability of overheating after operating for long periods of time (say 3 hours or so).... but the real danger is if you keep it this way, your crankshaft and connecting rod bearings will start to scuff little by little, which might cost you a very heavy engine overhaul. My advice: send it to a technician now, as it will require special tooling to tighten the cylinder head, remove/install valve springs, and maybe some shim calibration if it is an old model. Valves must also be inspected, and their guides as may have worn out. Give to specialist, I say, unless you have the patience and spirit to experiment.

Q:so do v-6 engines mean 6 cylinders right?, but what are valves? sometimes they are like double the cylinders (12 valve v6). what do they do, and cars that have like 2.5L does that mean how much fuel is injected and does more mean more power?on a side note, what kind of engine is the evo x? is it 4 cylinder? but has really good technology in it and is that how it has such high bhp?also if anyone knows, i kinda know what torque is but can someone explain in laymen terms? does more=better?: Yes v6 means 6 cylinders (pistons). Each pistons need to have gas come in and out and so the valves open and close to do exactly that (breath). There are at least 2 valves per piston - one (set) for exhaust and another for intake. Sometime to make it breath easier, there are 2 valves on each set. The 2.5L mean 2.5 liters (the measurement of the pistons) or basically the engine. The larger the displacement the more powerful (theoretically). Of course the larger the displacement the more fuel need to be injected. The exception is TURBO charged engines which stuff extra air (and extra fuel) so even a small engine take more fuel than equal non-turbo engie. The Evo uses much more than high tech engine to be that good. Besides being powerful, it uses the computer to divide the power to all 4 wheels in such a way to keep the car pulling even in a hard turn. === The TORQUE is the actual measure of engine power. The horse power is a translation of torque into something that people understand (horse - power). Good Luck...

Q:Our reactor is cooled by a cooling water system. The line pressure is around 4 bars and the pipe size is 42. How to select a good valve for that service?: Specialty valves should be sized/recommended by the manufacturer because of the different influences that may be encountered by the valve. Example: Temperature ranges, chemical composition of coolant, type of valve(ball, gate, tempering, other) all will have some effect. I would say take a look at the old one if it exists and if you're not satisfied with its performance, then cross reference it with other companies like Amtrol, Wilkins, etc. This would be the safest most logical method.

Q:I have been diagnosed with a bicuspid aortic valve and a discrete stenosis under the valve at 11 years old. I am now 25. My cardiologist told me I might need a valve replacement a 70. Can people actually live long with that condition? I don't understand it. And he only wants me to have an ultrasound every 3 years because nothing has changed in the past 10 years. Can my condition change in a short time? At a dangerous level? I have bad anxiety because of this.: The mitral valve between the left atrium and left ventricle only has two cusps and it works fine. Since the valve going into the left ventricle has two valves, it stands to reason that a similar valve going out of the left ventricle would function similarly if it was the same size and shape. The number of cusps is not entirely related to how well the valve functions. In your case, the opening of the aortic valve is slightly smaller than normal, but clearly capable of passing an adequate amount of blood. The stenosis alone may be the only problem caused by the valve. The stenosis you have likely creates some back pressure when the left ventricle contracts. The heart compensates partly for the back pressure but this prolonged compensation wears on the heart valve a little more than normal. So, you end up with a heart that more or less functions normally but the back pressure and compensation cause the heart valve to wear out faster than normal. Its a gradual effect. The type of damage done from this circumstance is not something that changes rapidly. Evaluating the condition every three years is still probably a very cautious approach and its not certain that the stenosis will ever become a significant problem even if you live well beyond 70 years.

Q:can you put a blow off valve on a chevy cobalt ss supercharged?: There is no need to put a blow off valve on any motor unless it is turbocharged.

Q:i know its going to drop some oil, im just wondering to what extent? how much oil is going to spill out?: your crazy right ? your working on a car, removing the valve cover and you don't want to be covered with oil ? Well go out and buy some rubber gloves first. please keep in mind paint wont' stick to anything unless it is cleaned properly. So to paint a valve cover and have the paint actually stick you need to remove it completely and clean it thoroughly with solvent. once it has been painted you need a good high heat paint and primer. I just painted the headers on my bike, after de-rusting it and removing the original paint, then I applied to coats of high heat primer, then two coats of paint.

Q:how to adjust the valves on a 20 horse power briggs and stratton engine on a sears craftman rideing mower model number 917.276824: On that model number the valve clearances or as follows. Inlet valve...0.010... Exhaust valve..0.013. Set cold. Set hot... Inlet 0.002 and exhaust 0.003. Set piston on the rock.. That is: Piston at TDC (Top Dead Center) on the compression stroke. Undo the bolt or bolts a 1/4 and set the feeler gauges between the tappet and adjust so the feeler is a stiff pull. Tighten the lock-nut or nuts and repeat for the next valve. Good to go. mmalky: 50 years of diagnosing and fixing large and small mower engines.

Q:I saw some other answers. I figure the relief valve needs replacing, ok no problem, but exactly how much pressure are we talking about here? what is the correct procedure to shut this thing down to replace the valve?: Shut of gas or electric and water feed valve to tank. Open hot water faucet to relieve pressure then close faucet. Connect hose to drain at bottom of heater and open drain. Put teflon tape on new relief valve. Loosen relief valve to introduce air so water drains out. It is possible to do this on the fly by removing old valve and installing new one immediately. If your not that confident, you can just loosen old valve by hand to the point that you have just a couple of threads holding it in place. You will hear air sucking in. The tank only needs to be drained to below the level of the relief valve.

Q:I have a '98 Dodge Caravan 3.0 and the valve cover gasket is bad. How do I replace it?: take the bolts off pull off old cover and do the same with new cover!

Q:Ok i dont know much about cars so if anybody could help out with this id appreciate it. Do i need to take my car in to get the PCV valve replaced or can i buy it and have it done in my driveway?Thanks....: Positive Crankcase Ventilation (PCV) Valve Removal Detach the PCV hose from the PCV valve. CAUTION: Do not pull the PCV valve from the valve cover without first rotating the PCV valve. Failure to follow this instruction may result in damage to the PCV valve. Remove the PCV valve. Rotate the PCV valve counterclockwise. Pull the PCV valve from the valve cover. Installation To install, reverse the removal procedure.

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