Sealability against natural gas

[ADNPD]

Dear All,

I was presented with a question concerning valve sealability against natural gas. The question was, in a high pressure full port complete flow channel would a wedge gate valve be able to provide a good enough seal? I thought that if an elasomeric sealing element were placed into either the seat or the wedge it would provide a sufficient seal. What do you think?

ADNPD

 

[RXH]

By "good enough seal" I assume you mean "bubble-tight". Yes, you can get this with a soft-seated wedge gate valve. Some manufacturers put the soft seat in the seat ring and others in the wedge.