Since 1912, Durco (a Flowserve brand) has been a trusted manufacturer of industrial control valves for the most demanding chemical environments. Its main products include:
- Non-lubricated plug control valves – G4 Sleeveline Series: Designed for corrosive processes, featuring a PTFE sleeve and fluoropolymer diaphragm for reliable sealing and in-line adjustment under pressure
- High-performance butterfly control valves – Big Max BX2001 Series: Double-offset design, available in ASME Class 150/300, with PFA, UHMWPE, or metal seats, sizes from 2" to 36", compliant with API 609 and ISO 15848 standards
- Triple-offset butterfly control valves – TX3 Series: Bidirectional zero-leakage shutoff, low operating torque, suitable for high-pressure, high-temperature, and cryogenic services, up to ANSI Class 1500
- Lined butterfly control valves – BTV-2000 Series: Engineered for aggressive chemical media, with PFA or UHMWPE linings, maintenance-free triple-seal design, sizes from 2" to 24", rated up to 150 psi and 177°C
- Specialty control valves – T4E, Mach 1, HF Alkylation: Solutions for highly corrosive fluids, available in special alloys such as Monel, Hastelloy, Durimet 20, and palladium-stabilized titanium
