Looking for Leak Sealant that Floats

[yamoffathoo]

The normally closed, 1500lb 10"nps wedge gate valve body/bonnet gasket is leaking 1200 psig and 500 degF subcooled water at about 1.5 lb/min. The idea to plug this leak is to back seat the valve, hook a jacking pump to the packing blow-out line, close the valve and inject sealant. The inter-gate volume has a pressure equalizing line that exits the bottom of the body and is tied back into the process, so unless the sealant will float on water at these pressures and temperatures, it can escape.

I'm looking for success stories with temporarily sealing valves this way and what sealant worked best.

 

[hsbcn]

Have you tried posting this on the "Adhesives and Sealants Engineering Forum"?

http://www.eng-tips.com/threadminder.cfm?pid=728

My focus: Alloy Valves Super Duplex Valves Monel Valves Incoloy Valves [link titanium-valves.com]Titanium Valves[/url] Hastelloy Valves

 

[hydromarine]

Grove valves can supply a sealant and hp application gun have used with sucess

 

[yamoffathoo]

Thanks, I'll give them a call for information on their sealant properties.