Butterfly Valves for Chemical Processing
Butterfly valves in chemical processing cover a wide range — from large-bore cooling water and utility service to PTFE-lined and Hastelloy designs for corrosive acid and solvent isolation. Vajra Industrial Solutions supplies rubber-seated, PTFE-seated, and triple-offset metal-seated butterfly valves in SS 316L, Hastelloy C-276, and PTFE/PFA-lined configurations for chemical plant service, with fire-safe design, ISO 15848 fugitive emission compliance, and full actuation packages for DCS-controlled isolation.
Key Applications — Butterfly Valves in Chemical Processing
Cooling Water and Utility Services
Ductile iron or carbon steel butterfly valves with EPDM or NBR seats for cooling water, tempered water, and plant utility services (process water, fire water, instrument air header). Large bore (DN300–DN900) butterfly valves at fraction of gate valve cost. Electric or pneumatic actuator for remote SCADA isolation.
DN100–DN900, PN 10–16, Ductile Iron / CS, EPDM seat, electric actuator, EN 593
Acid and Alkali — PTFE/PFA-Lined Butterfly Valves
PTFE-lined butterfly valves for concentrated sulfuric acid, hydrochloric acid, phosphoric acid, and caustic streams. PTFE lining covers both body and disc for full chemical protection. PFA-lined versions for higher purity and temperature applications. Full-face PTFE seat ensures zero metal contact with fluid. Suitable for pH 0–14 across most common industrial chemicals.
DN25–DN300, PN 6–16, CS body with full PTFE/PFA lining, wafer or lug, EN 593
Chlorine and Corrosive Gas Vent Headers
PTFE-lined butterfly valves for chlorine gas vent headers, HCl acid gas, and SO₂/SO₃ absorption tower isolation. PTFE seat and liner provides complete corrosion protection. Low torque PTFE-seated design allows smaller actuator. Specify with leak-off connection on shaft sealing for toxic gas containment verification.
DN50–DN300, PN 6–10, CS body / PTFE liner, PTFE seat, chlorine and acid gas service
Solvent Storage and Transfer — Hastelloy
Triple-offset metal-seated butterfly valves in Hastelloy C-276 body and disc for hot corrosive solvents, mixed acid streams, and aggressive chemical reactor effluents. Metal-to-metal seal eliminates elastomer compatibility concerns. Anti-static, fire-safe, ISO 15848 fugitive emission Class A for VOC-regulated service.
DN100–DN400, Class 150–300, Hastelloy C-276, metal seat, API 609, ISO 15848 Class A
Required Certifications
Recommended Materials
Selection Factors
Technical FAQs
Can PTFE-lined butterfly valves handle all acids?
What is the difference between a wafer and a lug butterfly valve?
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Butterfly Valves for Chemical Processing
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