Using Spiral wound gasket to GRP pipe 1

[a7med217]

In my application, I have valves connected to GRP flanges. shall I use a rubber gasket or spiral wound gasket for GRP flanges.

Thanks in advance.

 

[LittleInch]

Rubber /neoprene.

Remember - More details = better answers
Also: If you get a response it's polite to respond to it.

 

[pennpiper]

a7med217,
As LittleInch says, a "Full Face Rubber /Neoprene Gasket".

Sometimes its possible to do all the right things and still get bad results

 

[a7med217]

so we can't use a metal gasket to GRP flange or this is not recommended

 

[pennpiper]

a7med217,
If you do not believe us then contact the Customer Service people for GRP pipe flanges. Ask them if Full Face Gaskets are recommended.

Also look here and you will see lots of GRP Flat Face Flanges.

https://www.google.com/search?q=grp...0ahUKEwiQteipvtjQAhUBUSYKHbuyAE0QsAQIUA&dpr=1

Sometimes its possible to do all the right things and still get bad results

 

[LittleInch]

The whole propose of a gasket is to deform to seal off the imperfections in the flange. A metal gasket would be stronger than the flange face of a grp flange. Using a non full face metal gasket risks cracking the flange.

Remember - More details = better answers
Also: If you get a response it's polite to respond to it.

 

[NBrink]

Yeah, I've never met the FRP flange that could take the preload necessary to activate a spiral wound. Remember that rubber effects a seal at 0 psi (not in practice, but still), spiral wounds need upwards of 10,000 psi.

Nathan Brink