Cryogenic Spring-Loaded Seal Ring—The seal ring and associated valve parts in the Design ET-C and EWT-C valves are specifically designed and manufactured for excellent performance at low temperatures.
Stable Control—Rugged cage guiding in the Design ET-C and EWT-C valves stabilizes the valve plug at all points in its travel to reduce vibration, mechanical noise, and the need for hydraulic snubbers.
Cost Effective Operation and Economical Maintenance—Increased wear resistance of hardened stainless steel trim means long-lasting service. Balanced valve plug construction in the Design ET-C and EWT-C valves permits use of smaller, lower-cost Fisher® actuators.
Piping Economy—Expanded end connections of EW Series valves may reduce the need for line swages while accommodating oversized piping arrangements used to limit fluid flow velocities.
Cryogenic Design Features—The stainless steel valve body and bonnet with fabricated extension are designed to meet low temperature requirements. The unique metal-to-metal seat design provides repeatable tight shutoff, reducing maintenance costs.
Rugged Metal Seat—The metal-to-metal seat is designed and manufactured to provide long-lasting, reliable, tight shutoff at both ambient and cryogenic temperatures without the need for periodic lapping. This reduces the need for soft seats, even in applications with stringent shutoff requirements.
Fugitive Emission Protection—The optional ENVIRO-SEAL™ packing systems provide an improved stem seal to help prevent the loss of valuable or hazardous process fluids, and keep emissions below the EPA limit of 100 ppm. Additionally, these live-loaded packing systems can provide long life and reliability at low temperatures to help reduce maintenance costs and downtime.
Thoroughly Tested—Extensive cryogenic testing during the development of the valve design reduces the need for expensive cold testing for most applications, which results in quicker delivery and greater value.
Easy Maintenance—Quick-change trim, with a clamped-in seat ring, reduces the disassembly/ assembly time. The valve body can stay in the pipeline during removal of trim parts for inspection or maintenance.
Sour Service Capability—For NACE applications, consult your Emerson Process ManagementTM sales office. 