Double bonnet seals and stem packing are used in every valve with Viton® for its absolute sealing quality and insensitivity to age, backed up with a Teflon seal to insure leak tight performance even in the most severe cryogenic applications. Leak rates less than 10-7 std cc GHe/sec are standard.
The bonnet is axially bolted for complete compression of the Teflon seal and can be supplied for use in a horizontal position. Stem threads are Acme type made of stainless steel mated to a brass bushing in the bonnet to eliminate galling and assure year of smooth operation.
The CV8 offers the versatility of many operator/positioner options with variations of special trims and accessories common to the control valve industry.
The valves are available in tube and pipe sizes from ½ in. through 4 in. and in globe, right angle and "Y" pattern configurations. The valves can also be supplied in a "cold box" trim with abbreviated jacketing to customer's requirements and with bonnet purge ports.
Leslie Controls, Inc., 12501 Telecom Dr., Tampa, FL 33637-0906. Tel: 813-978-0984. Fax: 813-978-0984.
Viton® is a registered trademark of DuPont Performance Elastomers.