ITT Engineered Valves
Dia-Flo Pneumatic Actuator
Dia-Flo pneumatic actuators are rugged, close-coupled airmotor actuators for Dia-Flo weir and straightway diaphragm valves. With only a reinforced diaphragm and O-rings as wear parts, they are built for a very long service life in continuous plant duty.
Product Benefits
- Few wearing parts: The only wearing components are a nylon-reinforced, oil-resistant elastomer diaphragm and Buna N O-rings.
- Very little to fail: With so little subject to wear, maintenance stays minimal over decades of service.
- Three operating modes: Fail-open, fail-close and double-acting versions are offered.
- Interchangeable sizes: Sizes interchange across those modes, so one actuator family covers both simple on/off duties and automatic throttling.
Where It's Used
- Plant-wide valve automation: These actuators automate diaphragm valves throughout chemical, water and general process plants.
- Weir and straightway bodies: Both body styles are supported.
- Spring return for safe failure: Spring-return modes suit services that must fail to a safe open or closed position on air loss.
- Double-acting control: The double-acting series handles fully air-driven on/off and modulating control.
Good to Know
- Motor case materials: Motor cases come in aluminum or ductile iron.
- Ordinary plant air: The actuator runs on ordinary plant air within its rated supply pressure.
- Sized, not oversized: A range of sizes lets the actuator be matched to valve size and shutoff needs rather than oversized by default.
- Matching accessories: Positioners, solenoid valves and limit switches from the same Dia-Flo range complete a fully automated package.
