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Purpose Of Ductile Iron Pipe Gaskets
The ductile iron pipe gaskets primarily aim to ensure the leakproof sealing of sewage and drinking water piping systems. These systems use push-on joints that are axially movable joints and can withstand high loads.
Some of the purposes of these gaskets, for example, would be to ensure:
- Satisfactory supply of drinking water.
- Leak-free disposal of sewage and wastewater.
- Help to protect bodies and water courses of surface and underground water.
Moreover, these are used in applications relating to the transport of water for firefighting, irrigation, and so on as well.
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What Is The Disadvantage Of Di Gaskets?
While di gaskets are favorable for different applications, there are certain disadvantages to them. These have been enumerated below.
- The gaskets have an upper temperature limit of around 200 degrees Celsius. So these are not suitable for applications that cross this.
- Certain elastomeric gasket materials cannot be used in services where the medium is petroleum, hydrocarbons, concentrated acids, and so on.
- Because of the nature of the compatible joint, these gaskets are only meant to deliver a watertight seal. Not an airtight seal.
- Materials like EPDM used to make a ductile iron pipe rubber gasket are not recyclable. And hence these are not environmentally friendly options.
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Why Use Di Pipe Gaskets?
Di pipe gaskets provide a strong seal between two surfaces and are designed to work reliably even under the most difficult operating conditions. They are built with features that other sealing materials do not have. When flange fasteners are fully tightened, these gaskets compress beautifully without weakening or damaging the material’s elasticity. This means that they are capable of springing back into shape after providing incredible compression between two surfaces when required. Furthermore, the rubber-like substance used to make these gaskets conforms to any irregular outline of the two mating surfaces. This improves seal performance and eliminates all leakage possibilities.
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How Do You Select The Right Ductile Iron Transition Gaskets?
There are different types of ductile iron transition gaskets, each with its characteristic properties. One has to choose the right gasket among these, based on the application and the gasket’s compatibility.
SBR
It can be used in applications of:
- Drinking-Water
- Sea Water
- Sanitary Sewer
- Reclaimed Water
- Raw Water
- Storm Water
EPDM
These gaskets have a high service temperature. Used best in the presence of alcohols, dilute acids, vegetable oils, etc.
Nitrile
Nitrile gaskets are best used in the presence of:
- Hydrocarbons
- Fats
- Oils
- Fluids
- Refined Petroleum
Neoprene
Neoprene gaskets are the best choice for dealing with greasy waste in the sanitary, sewer, stormwater, and so on.
FKM
FKM gaskets are the best overall for use with ductile iron pipes. Can be used with certain hydrocarbons, fuel acid, and petroleum. Also usable in applications where SBR ductile iron pipe push-on gasket is suitable.
The installation process of ductile iron pipe push-on gasket, and ductile iron pipe rubber gasket stockists in saudi aramco offer proper stamping & marking
Installation Process of Ductile Iron Anchor Gaskets
Installation of ductile iron anchor gaskets is done in the same way that the ductile iron flange gaskets are done. Here are the steps involved.
- Clean the gasket seat in the pipe bell using a wet rag or wire brush
- Insert the gasket properly, making sure the heel is going inside the groove. Or else, it may slide out.
- Use only recommended pipe lube only on the exposed part of the gasket.
- Align the two pipes and insert one pipe into the other’s bell. Do not deflect the pipe and insert it straight.
- Do a visual check of the joint.
