wafer type butterfly check valve

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Specifications

Wafer Type Butterfly Check Valve


PN10/16/25
DN80~ 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)

Shaft bush: gunmetal

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Yes, anyone can have heart valve disease. It is unlikely though. Usually if a 12 year old has an abnormal heart valve, then it is secondary to a congenital heart defect (something they were born with.) Infection of the heart valve (endocarditis) can occur in any age group and lead to an abnormality in the function of the valve involved. Rheumatic heart disease is also possible, but not common in the developed world since the regular use of antibiotics. Good luck.
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Possibly, unless it's a Ford. A lot of the time on a Ford, it's the DPFE sensor that sets an egr code. Or do you mean ther is no egr valve on the car? Some GM and Chrysler engines were built with and without egr valves, (2.2 GM, 3.3 Chrysler). If someone replace the engine, you will need to get the parts required for installing an egr valve. In the case of the 2.2, it means a different cylinder head and exhaust manifold, the Chrysler 3.3, a different intake and rear exhaust manifold.
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There is really no such thing as has to but there is a thing as ought to. You should put good used heads in a machine shop for a clean up and restoration. The worse they are, the more they need new seats, seals, guide clean up with new valves, surfacing and so on.

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