Inquiry (采购产品): Hot gas shut off valve I need a small valve (1/4")that will be able to work in hot helium (500°C) at pressures up to 90 bar. The valve must automatically shut when gas temperatures through valve exceeds 500°C. Normally there will be very little or no flow, as I will beusing these valves for pressure gauge instrument valves. The valve should be totally mechanically operated, with no electrical power. Regards Naas Scholtz. IST limited. **** Hidden Message ***** Naas Scholtz P O Box 95355, Waterkloof 221 Garsfontein drive Pretoria0145 ZAF Company: IST limited Title: Mr Phone: +27124267409 Fax: +02713482600 E-mail: naas@ist.co.za **** Hidden Message ***** naas@ist.co.za