Ductile Iron Single Ball Air Valves

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Product Description:


DN50 ~ DN200

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)

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Q:Leaking Proportioning Valve?
First up is that the valve is not leaking oil, it is leaking brake fluid. That is bad. The proportioning valve controls the brake pressure to the rear brakes. Most of the braking is done with the front brakes and without the valve you could lock up the rear brakes on medium to hard stops and the rear end could loose traction, that would be a bad thing on a sharp turn. With that said please replace the valve I have never seen a repair kit for them. Have you looked at to GM for the part? They may also have knowledge on a conversion of the master cylinder with the valve built in.
Q:Does any one knows were i could buy a VALVE COVER for a 1999 mazda miata?
Q:Blow-off valve requirements?
I'm a girl.....you don't have to have a turbo, any type of fast car will get you blown off.
Q:Broke a Bolt in the Valve Cover?
Yes you can drive the vehicle with 1 broken bolt to the valve cover. The valve cover should leak a little due to the lack of tension at the broken bolt. The leak may be minimal. If you remove the valve cover use silicone as a new gasket, you can use extra silicone at the broken bolt. Allow the silicone to dry before tightening the valve cover bolts. The extra silicone may stop any oil to blow by the broken bolt problem solved. The valve cover does nothing more than stopping oil from leaking. A leaky valve cover nothing more than leak will not affect how the vehicle runs. The cost to have the broken bolt replaced should be around $100.00 (if the broken bolt is accessible) The cost is strictly labor (time). About $100.00/an hour. To repair this you have 3 options; 1) You can extract the bolt. This may be very easy depending on the accessibility (can you get a drill over the broken bolt?). If you can drill a whole in the broken bolt, you can lightly tap an extractor into the whole with a hammer. Then with a wrench or a pipe wrench you can try to extract the bolt by turning the extractor counter clockwise. Use WD40 or a catalyst to loosen the broken bolt. The longer the catalyst (WD40) has to work the better. ie- spray the broken bolt 3 or 4 times a day allow the oil time to loosen the broken bolt. You can purchase extractors at any auto parts store for about $15.00 I can't emphasize the importance of WD40 enough!!!! 2) The 2nd option is to use a healy coil. You would need to drill out the bolt to a specific size (the healy coil package will tell you what size drill bit to use). After drilling out the bolt you can insert a healy coil that will allow you to use the same size bolt you just drilled out. The healy coil package will have detailed instructions. This is very easy to do! Healy coils can hold a lot more torque than valve covers require. 3) The third option is to drill out the broken bolt completely tap new threads insert a larger bolt.
Q:In aircraft reciprocating engine, if valve spring surge happen?
Its in a car engine but the fault is near the same. The good news is that in aircraft there are mostly multi-spring valve springs to help prevent the resonance problem that can happen with a single spring. (If one goes resonant, the other one doesn't.) I think what that means is that if you have valve spring surges in an aircraft engine, you probably have a broken spring or weak on the assembly. (just a guess but if they don't go resonant at the same time then how would you get the surge?) The affect, not good. Result - rough at a certain RPM or range of RPM even temp. related Feeling - rough
Q:proportion valves?
the valves are on the brake lines before they break away from the frame, or at least they should be. They are controlled by the computer though.
Q:Need help finding a specific valve...?
The leading maker of solenoid valves is ASCO. Their website is shown below. If a valve that fits your application exists they probably make one. If you can't find a suitable solenoid then you need to consider a pneumatic valve operated by a solenoid valve. That is a common solution for a problem like yours. As to the male connections. If they are not available then you can just use a pair of threaded fittings (pipe nipples) to change the configuration.
Q:home water heater has 175psi pressure relief valve installed.?
OKAY...the 30 psi is bogus....I've never heard of that! The pressure coming into your house and the water heater is typically 70psi to 100psi....the relief valve is set to pop off at 175 psi....if the pressure in your water heater reaches 175 then the valve will pop....when this happens you need a new relief valve....you may want to figure out why this happened also......your heater may be set too high... try turning it down a little......but first check the incoming water pressure to your home....do this by buying a water pressure gage and screwing it on to an outside hose bibb and turning the hose bibb on......if the pressure is over 80 psi (which is what most plumbing code calls for) then you probably want to install a pressure regulator in the yard to lower the pressure......Example.....if you have 120psi coming into the water heater, and when water heats it expands and builds pressure then you could reach 175 psi and your relief valve will pop off.......good luck!!
Q:Is The EGR valve necessary?
when i used to modify cars/trucks.build high performance engines,the first thing to go was the egr valve.some places or states require an emissions test even on diesels.so if you do decide to remove the egr vale keep it handy to put back on.
Q:What does it mean when you have 2 heart valves?
Your mom probably has a Bicuspid aortic valve, that she was born with.. it means that the valve between her heart and the aorta has two valve leaflets instead of the usual three valve leaflets (not four) in normal people. Bicuspid aortic valve is caused by fusion of two of the three leaflets. It's a fairly common congenital condition, and is associated with a risk of aortic aneurysm (a weakening of the wall of the blood vessel which then causes ballooning of the vessel wall)...usually of the ascending aorta. All the best for her safe recovery.

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