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The Durco Big Max BX2001 high-performance, all-purpose valve is designed for precise throttling control or on-off service with lighter weight piping systems and less expensive, energy-efficient actuators.

The Durco TX3 triple offset butterfly control valve has an elliptical sealing surface that is completely in contact at the final position only, and upon opening, all contact points are released immediately from the seat ring.

The BTV Lined Butterfly Valve is a reliable, leak-free service valve designed for a wide range of demanding requirements in corrosive chemical applications and process industries.

Durco T4E valves provide maximum corrosion resistance while eliminating product contamination at a reasonable cost. They are available with pneumatic or electric actuators for on-off or modulating control applications.

The Durco G4 Sleeveline plug valve is engineered for use the most corrosive and difficult chemical services where drop-tight shutoff is an absolute requirement. It offers the proven reliability of the plug/PTFE sleeve primary seal with a fluoropolymer diaphragm secondary seal.

Flowserve has supplied thousands of Durco G4BZ-HF Marathon Sleeveline HF alkylation valves to refineries throughout the world. Engineered for high-cycle, low-emissions service, this non-lubricated plug valve offers an extra measure of positive stem sealing reliability. It can be used with confidence in applications where tight shutoff and emissions containment are unconditional requirements to ensure safety.

Durco G4BZ-HF Marathon valves are Phillips Licensing listed and UOP Process Division approved for the following applications:

The Mach 1 is a non-lubricated (sleeved) quarter turn plug valve capable of in-line service and repair.